kc3-lang/gnulib/tests/test-snprintf-posix.h
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Hash : e8e63d1b
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Date : 2009-02-24T04:10:02
vasnprintf: Fix invalid read past end of memory block.
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tests/test-snprintf-posix.h
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/* Test of POSIX compatible vsnprintf() and snprintf() functions. Copyright (C) 2007-2009 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Written by Bruno Haible <bruno@clisp.org>, 2007. */ #include "nan.h" /* The SGI MIPS floating-point format does not distinguish 0.0 and -0.0. */ static int have_minus_zero () { static double plus_zero = 0.0; double minus_zero = - plus_zero; return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0; } /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0. So we use -zerod instead. */ double zerod = 0.0; /* On HP-UX 10.20, negating 0.0L does not yield -0.0L. So we use minus_zerol instead. IRIX cc can't put -0.0L into .data, but can compute at runtime. Note that the expression -LDBL_MIN * LDBL_MIN does not work on other platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */ #if defined __hpux || defined __sgi static long double compute_minus_zerol (void) { return -LDBL_MIN * LDBL_MIN; } # define minus_zerol compute_minus_zerol () #else long double minus_zerol = -0.0L; #endif /* Representation of an 80-bit 'long double' as an initializer for a sequence of 'unsigned int' words. */ #ifdef WORDS_BIGENDIAN # define LDBL80_WORDS(exponent,manthi,mantlo) \ { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \ ((unsigned int) (manthi) << 16) | (unsigned int) (mantlo) >> 16), \ (unsigned int) (mantlo) << 16 \ } #else # define LDBL80_WORDS(exponent,manthi,mantlo) \ { mantlo, manthi, exponent } #endif static int strmatch (const char *pattern, const char *string) { if (strlen (pattern) != strlen (string)) return 0; for (; *pattern != '\0'; pattern++, string++) if (*pattern != '*' && *string != *pattern) return 0; return 1; } /* Test whether string[start_index..end_index-1] is a valid textual representation of NaN. */ static int strisnan (const char *string, size_t start_index, size_t end_index, int uppercase) { if (start_index < end_index) { if (string[start_index] == '-') start_index++; if (start_index + 3 <= end_index && memcmp (string + start_index, uppercase ? "NAN" : "nan", 3) == 0) { start_index += 3; if (start_index == end_index || (string[start_index] == '(' && string[end_index - 1] == ')')) return 1; } } return 0; } static void test_function (int (*my_snprintf) (char *, size_t, const char *, ...)) { char buf[8]; int size; /* Test return value convention. */ for (size = 0; size <= 8; size++) { int retval; memcpy (buf, "DEADBEEF", 8); retval = my_snprintf (buf, size, "%d", 12345); ASSERT (retval == 5); if (size < 6) { if (size > 0) { ASSERT (memcmp (buf, "12345", size - 1) == 0); ASSERT (buf[size - 1] == '\0'); } ASSERT (memcmp (buf + size, "DEADBEEF" + size, 8 - size) == 0); } else { ASSERT (memcmp (buf, "12345\0EF", 8) == 0); } } /* Test support of size specifiers as in C99. */ { char result[100]; int retval = my_snprintf (result, sizeof (result), "%ju %d", (uintmax_t) 12345671, 33, 44, 55); ASSERT (strcmp (result, "12345671 33") == 0); ASSERT (retval == strlen (result)); } { char result[100]; int retval = my_snprintf (result, sizeof (result), "%zu %d", (size_t) 12345672, 33, 44, 55); ASSERT (strcmp (result, "12345672 33") == 0); ASSERT (retval == strlen (result)); } { char result[100]; int retval = my_snprintf (result, sizeof (result), "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55); ASSERT (strcmp (result, "12345673 33") == 0); ASSERT (retval == strlen (result)); } { char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", (long double) 1.5, 33, 44, 55); ASSERT (strcmp (result, "1.5 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the 'a' and 'A' conversion specifier for hexadecimal output of floating-point numbers. */ { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%a %d", 3.1416015625, 33, 44, 55); ASSERT (strcmp (result, "0x1.922p+1 33") == 0 || strcmp (result, "0x3.244p+0 33") == 0 || strcmp (result, "0x6.488p-1 33") == 0 || strcmp (result, "0xc.91p-2 33") == 0); ASSERT (retval == strlen (result)); } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%A %d", -3.1416015625, 33, 44, 55); ASSERT (strcmp (result, "-0X1.922P+1 33") == 0 || strcmp (result, "-0X3.244P+0 33") == 0 || strcmp (result, "-0X6.488P-1 33") == 0 || strcmp (result, "-0XC.91P-2 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%a %d", 0.0, 33, 44, 55); ASSERT (strcmp (result, "0x0p+0 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%a %d", -zerod, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0x0p+0 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%a %d", 1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%a %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%a %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding near the decimal point. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.0a %d", 1.5, 33, 44, 55); ASSERT (strcmp (result, "0x2p+0 33") == 0 || strcmp (result, "0x3p-1 33") == 0 || strcmp (result, "0x6p-2 33") == 0 || strcmp (result, "0xcp-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 0. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.0a %d", 1.51, 33, 44, 55); ASSERT (strcmp (result, "0x2p+0 33") == 0 || strcmp (result, "0x3p-1 33") == 0 || strcmp (result, "0x6p-2 33") == 0 || strcmp (result, "0xcp-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 1. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.1a %d", 1.51, 33, 44, 55); ASSERT (strcmp (result, "0x1.8p+0 33") == 0 || strcmp (result, "0x3.0p-1 33") == 0 || strcmp (result, "0x6.1p-2 33") == 0 || strcmp (result, "0xc.1p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 2. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2a %d", 1.51, 33, 44, 55); ASSERT (strcmp (result, "0x1.83p+0 33") == 0 || strcmp (result, "0x3.05p-1 33") == 0 || strcmp (result, "0x6.0ap-2 33") == 0 || strcmp (result, "0xc.14p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 3. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.3a %d", 1.51, 33, 44, 55); ASSERT (strcmp (result, "0x1.829p+0 33") == 0 || strcmp (result, "0x3.052p-1 33") == 0 || strcmp (result, "0x6.0a4p-2 33") == 0 || strcmp (result, "0xc.148p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding can turn a ...FFF into a ...000. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.3a %d", 1.49999, 33, 44, 55); ASSERT (strcmp (result, "0x1.800p+0 33") == 0 || strcmp (result, "0x3.000p-1 33") == 0 || strcmp (result, "0x6.000p-2 33") == 0 || strcmp (result, "0xc.000p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding can turn a ...FFF into a ...000. This shows a MacOS X 10.3.9 (Darwin 7.9) bug. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.1a %d", 1.999, 33, 44, 55); ASSERT (strcmp (result, "0x1.0p+1 33") == 0 || strcmp (result, "0x2.0p+0 33") == 0 || strcmp (result, "0x4.0p-1 33") == 0 || strcmp (result, "0x8.0p-2 33") == 0); ASSERT (retval == strlen (result)); } { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%10a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 0x1.cp+0 33") == 0 || strcmp (result, " 0x3.8p-1 33") == 0 || strcmp (result, " 0x7p-2 33") == 0 || strcmp (result, " 0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Small precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.10a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "0x1.c000000000p+0 33") == 0 || strcmp (result, "0x3.8000000000p-1 33") == 0 || strcmp (result, "0x7.0000000000p-2 33") == 0 || strcmp (result, "0xe.0000000000p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Large precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.50a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "0x1.c0000000000000000000000000000000000000000000000000p+0 33") == 0 || strcmp (result, "0x3.80000000000000000000000000000000000000000000000000p-1 33") == 0 || strcmp (result, "0x7.00000000000000000000000000000000000000000000000000p-2 33") == 0 || strcmp (result, "0xe.00000000000000000000000000000000000000000000000000p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-10a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "0x1.cp+0 33") == 0 || strcmp (result, "0x3.8p-1 33") == 0 || strcmp (result, "0x7p-2 33") == 0 || strcmp (result, "0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "+0x1.cp+0 33") == 0 || strcmp (result, "+0x3.8p-1 33") == 0 || strcmp (result, "+0x7p-2 33") == 0 || strcmp (result, "+0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 0x1.cp+0 33") == 0 || strcmp (result, " 0x3.8p-1 33") == 0 || strcmp (result, " 0x7p-2 33") == 0 || strcmp (result, " 0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "0x1.cp+0 33") == 0 || strcmp (result, "0x3.8p-1 33") == 0 || strcmp (result, "0x7.p-2 33") == 0 || strcmp (result, "0xe.p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#a %d", 1.0, 33, 44, 55); ASSERT (strcmp (result, "0x1.p+0 33") == 0 || strcmp (result, "0x2.p-1 33") == 0 || strcmp (result, "0x4.p-2 33") == 0 || strcmp (result, "0x8.p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%010a %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "0x001.cp+0 33") == 0 || strcmp (result, "0x003.8p-1 33") == 0 || strcmp (result, "0x00007p-2 33") == 0 || strcmp (result, "0x0000ep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%010a %d", 1.0 / 0.0, 33, 44, 55); /* "0000000inf 33" is not a valid result; see <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ ASSERT (strcmp (result, " inf 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050a %d", NaNd (), 33, 44, 55); /* "0000000nan 33" is not a valid result; see <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", 3.1416015625L, 33, 44, 55); ASSERT (strcmp (result, "0x1.922p+1 33") == 0 || strcmp (result, "0x3.244p+0 33") == 0 || strcmp (result, "0x6.488p-1 33") == 0 || strcmp (result, "0xc.91p-2 33") == 0); ASSERT (retval == strlen (result)); } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LA %d", -3.1416015625L, 33, 44, 55); ASSERT (strcmp (result, "-0X1.922P+1 33") == 0 || strcmp (result, "-0X3.244P+0 33") == 0 || strcmp (result, "-0X6.488P-1 33") == 0 || strcmp (result, "-0XC.91P-2 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", 0.0L, 33, 44, 55); ASSERT (strcmp (result, "0x0p+0 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", minus_zerol, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0x0p+0 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", 1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) { /* Quiet NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Signalling NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities, Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in Intel IA-64 Architecture Software Developer's Manual, Volume 1: Application Architecture. Table 5-2 "Floating-Point Register Encodings" Figure 5-6 "Memory to Floating-Point Register Data Translation" */ { /* Pseudo-NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Infinity. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Zero. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Unnormalized number. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Denormal. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%La %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #endif { /* Rounding near the decimal point. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.0La %d", 1.5L, 33, 44, 55); ASSERT (strcmp (result, "0x2p+0 33") == 0 || strcmp (result, "0x3p-1 33") == 0 || strcmp (result, "0x6p-2 33") == 0 || strcmp (result, "0xcp-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 0. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.0La %d", 1.51L, 33, 44, 55); ASSERT (strcmp (result, "0x2p+0 33") == 0 || strcmp (result, "0x3p-1 33") == 0 || strcmp (result, "0x6p-2 33") == 0 || strcmp (result, "0xcp-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 1. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.1La %d", 1.51L, 33, 44, 55); ASSERT (strcmp (result, "0x1.8p+0 33") == 0 || strcmp (result, "0x3.0p-1 33") == 0 || strcmp (result, "0x6.1p-2 33") == 0 || strcmp (result, "0xc.1p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 2. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2La %d", 1.51L, 33, 44, 55); ASSERT (strcmp (result, "0x1.83p+0 33") == 0 || strcmp (result, "0x3.05p-1 33") == 0 || strcmp (result, "0x6.0ap-2 33") == 0 || strcmp (result, "0xc.14p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding with precision 3. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.3La %d", 1.51L, 33, 44, 55); ASSERT (strcmp (result, "0x1.829p+0 33") == 0 || strcmp (result, "0x3.052p-1 33") == 0 || strcmp (result, "0x6.0a4p-2 33") == 0 || strcmp (result, "0xc.148p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding can turn a ...FFF into a ...000. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.3La %d", 1.49999L, 33, 44, 55); ASSERT (strcmp (result, "0x1.800p+0 33") == 0 || strcmp (result, "0x3.000p-1 33") == 0 || strcmp (result, "0x6.000p-2 33") == 0 || strcmp (result, "0xc.000p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Rounding can turn a ...FFF into a ...000. This shows a MacOS X 10.3.9 (Darwin 7.9) bug and a glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.1La %d", 1.999L, 33, 44, 55); ASSERT (strcmp (result, "0x1.0p+1 33") == 0 || strcmp (result, "0x2.0p+0 33") == 0 || strcmp (result, "0x4.0p-1 33") == 0 || strcmp (result, "0x8.0p-2 33") == 0); ASSERT (retval == strlen (result)); } { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%10La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 0x1.cp+0 33") == 0 || strcmp (result, " 0x3.8p-1 33") == 0 || strcmp (result, " 0x7p-2 33") == 0 || strcmp (result, " 0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Small precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.10La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "0x1.c000000000p+0 33") == 0 || strcmp (result, "0x3.8000000000p-1 33") == 0 || strcmp (result, "0x7.0000000000p-2 33") == 0 || strcmp (result, "0xe.0000000000p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* Large precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.50La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "0x1.c0000000000000000000000000000000000000000000000000p+0 33") == 0 || strcmp (result, "0x3.80000000000000000000000000000000000000000000000000p-1 33") == 0 || strcmp (result, "0x7.00000000000000000000000000000000000000000000000000p-2 33") == 0 || strcmp (result, "0xe.00000000000000000000000000000000000000000000000000p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-10La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "0x1.cp+0 33") == 0 || strcmp (result, "0x3.8p-1 33") == 0 || strcmp (result, "0x7p-2 33") == 0 || strcmp (result, "0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "+0x1.cp+0 33") == 0 || strcmp (result, "+0x3.8p-1 33") == 0 || strcmp (result, "+0x7p-2 33") == 0 || strcmp (result, "+0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 0x1.cp+0 33") == 0 || strcmp (result, " 0x3.8p-1 33") == 0 || strcmp (result, " 0x7p-2 33") == 0 || strcmp (result, " 0xep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "0x1.cp+0 33") == 0 || strcmp (result, "0x3.8p-1 33") == 0 || strcmp (result, "0x7.p-2 33") == 0 || strcmp (result, "0xe.p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#La %d", 1.0L, 33, 44, 55); ASSERT (strcmp (result, "0x1.p+0 33") == 0 || strcmp (result, "0x2.p-1 33") == 0 || strcmp (result, "0x4.p-2 33") == 0 || strcmp (result, "0x8.p-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%010La %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "0x001.cp+0 33") == 0 || strcmp (result, "0x003.8p-1 33") == 0 || strcmp (result, "0x00007p-2 33") == 0 || strcmp (result, "0x0000ep-3 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%010La %d", 1.0L / 0.0L, 33, 44, 55); /* "0000000inf 33" is not a valid result; see <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ ASSERT (strcmp (result, " inf 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050La %d", NaNl (), 33, 44, 55); /* "0000000nan 33" is not a valid result; see <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the %f format directive. */ { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", 12.75, 33, 44, 55); ASSERT (strcmp (result, "12.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", 1234567.0, 33, 44, 55); ASSERT (strcmp (result, "1234567.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Small and large positive numbers. */ static struct { double value; const char *string; } data[] = { { 1.234321234321234e-37, "0.000000" }, { 1.234321234321234e-36, "0.000000" }, { 1.234321234321234e-35, "0.000000" }, { 1.234321234321234e-34, "0.000000" }, { 1.234321234321234e-33, "0.000000" }, { 1.234321234321234e-32, "0.000000" }, { 1.234321234321234e-31, "0.000000" }, { 1.234321234321234e-30, "0.000000" }, { 1.234321234321234e-29, "0.000000" }, { 1.234321234321234e-28, "0.000000" }, { 1.234321234321234e-27, "0.000000" }, { 1.234321234321234e-26, "0.000000" }, { 1.234321234321234e-25, "0.000000" }, { 1.234321234321234e-24, "0.000000" }, { 1.234321234321234e-23, "0.000000" }, { 1.234321234321234e-22, "0.000000" }, { 1.234321234321234e-21, "0.000000" }, { 1.234321234321234e-20, "0.000000" }, { 1.234321234321234e-19, "0.000000" }, { 1.234321234321234e-18, "0.000000" }, { 1.234321234321234e-17, "0.000000" }, { 1.234321234321234e-16, "0.000000" }, { 1.234321234321234e-15, "0.000000" }, { 1.234321234321234e-14, "0.000000" }, { 1.234321234321234e-13, "0.000000" }, { 1.234321234321234e-12, "0.000000" }, { 1.234321234321234e-11, "0.000000" }, { 1.234321234321234e-10, "0.000000" }, { 1.234321234321234e-9, "0.000000" }, { 1.234321234321234e-8, "0.000000" }, { 1.234321234321234e-7, "0.000000" }, { 1.234321234321234e-6, "0.000001" }, { 1.234321234321234e-5, "0.000012" }, { 1.234321234321234e-4, "0.000123" }, { 1.234321234321234e-3, "0.001234" }, { 1.234321234321234e-2, "0.012343" }, { 1.234321234321234e-1, "0.123432" }, { 1.234321234321234, "1.234321" }, { 1.234321234321234e1, "12.343212" }, { 1.234321234321234e2, "123.432123" }, { 1.234321234321234e3, "1234.321234" }, { 1.234321234321234e4, "12343.212343" }, { 1.234321234321234e5, "123432.123432" }, { 1.234321234321234e6, "1234321.234321" }, { 1.234321234321234e7, "12343212.343212" }, { 1.234321234321234e8, "123432123.432123" }, { 1.234321234321234e9, "1234321234.321234" }, { 1.234321234321234e10, "12343212343.2123**" }, { 1.234321234321234e11, "123432123432.123***" }, { 1.234321234321234e12, "1234321234321.23****" }, { 1.234321234321234e13, "12343212343212.3*****" }, { 1.234321234321234e14, "123432123432123.******" }, { 1.234321234321234e15, "1234321234321234.000000" }, { 1.234321234321234e16, "123432123432123**.000000" }, { 1.234321234321234e17, "123432123432123***.000000" }, { 1.234321234321234e18, "123432123432123****.000000" }, { 1.234321234321234e19, "123432123432123*****.000000" }, { 1.234321234321234e20, "123432123432123******.000000" }, { 1.234321234321234e21, "123432123432123*******.000000" }, { 1.234321234321234e22, "123432123432123********.000000" }, { 1.234321234321234e23, "123432123432123*********.000000" }, { 1.234321234321234e24, "123432123432123**********.000000" }, { 1.234321234321234e25, "123432123432123***********.000000" }, { 1.234321234321234e26, "123432123432123************.000000" }, { 1.234321234321234e27, "123432123432123*************.000000" }, { 1.234321234321234e28, "123432123432123**************.000000" }, { 1.234321234321234e29, "123432123432123***************.000000" }, { 1.234321234321234e30, "123432123432123****************.000000" }, { 1.234321234321234e31, "123432123432123*****************.000000" }, { 1.234321234321234e32, "123432123432123******************.000000" }, { 1.234321234321234e33, "123432123432123*******************.000000" }, { 1.234321234321234e34, "123432123432123********************.000000" }, { 1.234321234321234e35, "123432123432123*********************.000000" }, { 1.234321234321234e36, "123432123432123**********************.000000" } }; size_t k; for (k = 0; k < SIZEOF (data); k++) { char result[100]; int retval = my_snprintf (result, sizeof (result), "%f", data[k].value); ASSERT (strmatch (data[k].string, result)); ASSERT (retval == strlen (result)); } } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", -0.03125, 33, 44, 55); ASSERT (strcmp (result, "-0.031250 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", 0.0, 33, 44, 55); ASSERT (strcmp (result, "0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", -zerod, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", 1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0 || strcmp (result, "infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0 || strcmp (result, "-infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%f %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%10f %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-10f %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+f %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "+1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% f %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#f %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.f %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "2. 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015f %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "00001234.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015f %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, " -inf 33") == 0 || strcmp (result, " -infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050f %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.f %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "1234 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2f %d", 999.951, 33, 44, 55); ASSERT (strcmp (result, "999.95 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2f %d", 999.996, 33, 44, 55); ASSERT (strcmp (result, "1000.00 33") == 0); ASSERT (retval == strlen (result)); } { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", 12.75L, 33, 44, 55); ASSERT (strcmp (result, "12.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", 1234567.0L, 33, 44, 55); ASSERT (strcmp (result, "1234567.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Small and large positive numbers. */ static struct { long double value; const char *string; } data[] = { { 1.234321234321234e-37L, "0.000000" }, { 1.234321234321234e-36L, "0.000000" }, { 1.234321234321234e-35L, "0.000000" }, { 1.234321234321234e-34L, "0.000000" }, { 1.234321234321234e-33L, "0.000000" }, { 1.234321234321234e-32L, "0.000000" }, { 1.234321234321234e-31L, "0.000000" }, { 1.234321234321234e-30L, "0.000000" }, { 1.234321234321234e-29L, "0.000000" }, { 1.234321234321234e-28L, "0.000000" }, { 1.234321234321234e-27L, "0.000000" }, { 1.234321234321234e-26L, "0.000000" }, { 1.234321234321234e-25L, "0.000000" }, { 1.234321234321234e-24L, "0.000000" }, { 1.234321234321234e-23L, "0.000000" }, { 1.234321234321234e-22L, "0.000000" }, { 1.234321234321234e-21L, "0.000000" }, { 1.234321234321234e-20L, "0.000000" }, { 1.234321234321234e-19L, "0.000000" }, { 1.234321234321234e-18L, "0.000000" }, { 1.234321234321234e-17L, "0.000000" }, { 1.234321234321234e-16L, "0.000000" }, { 1.234321234321234e-15L, "0.000000" }, { 1.234321234321234e-14L, "0.000000" }, { 1.234321234321234e-13L, "0.000000" }, { 1.234321234321234e-12L, "0.000000" }, { 1.234321234321234e-11L, "0.000000" }, { 1.234321234321234e-10L, "0.000000" }, { 1.234321234321234e-9L, "0.000000" }, { 1.234321234321234e-8L, "0.000000" }, { 1.234321234321234e-7L, "0.000000" }, { 1.234321234321234e-6L, "0.000001" }, { 1.234321234321234e-5L, "0.000012" }, { 1.234321234321234e-4L, "0.000123" }, { 1.234321234321234e-3L, "0.001234" }, { 1.234321234321234e-2L, "0.012343" }, { 1.234321234321234e-1L, "0.123432" }, { 1.234321234321234L, "1.234321" }, { 1.234321234321234e1L, "12.343212" }, { 1.234321234321234e2L, "123.432123" }, { 1.234321234321234e3L, "1234.321234" }, { 1.234321234321234e4L, "12343.212343" }, { 1.234321234321234e5L, "123432.123432" }, { 1.234321234321234e6L, "1234321.234321" }, { 1.234321234321234e7L, "12343212.343212" }, { 1.234321234321234e8L, "123432123.432123" }, { 1.234321234321234e9L, "1234321234.321234" }, { 1.234321234321234e10L, "12343212343.2123**" }, { 1.234321234321234e11L, "123432123432.123***" }, { 1.234321234321234e12L, "1234321234321.23****" }, { 1.234321234321234e13L, "12343212343212.3*****" }, { 1.234321234321234e14L, "123432123432123.******" }, { 1.234321234321234e15L, "1234321234321234.000000" }, { 1.234321234321234e16L, "123432123432123**.000000" }, { 1.234321234321234e17L, "123432123432123***.000000" }, { 1.234321234321234e18L, "123432123432123****.000000" }, { 1.234321234321234e19L, "123432123432123*****.000000" }, { 1.234321234321234e20L, "123432123432123******.000000" }, { 1.234321234321234e21L, "123432123432123*******.000000" }, { 1.234321234321234e22L, "123432123432123********.000000" }, { 1.234321234321234e23L, "123432123432123*********.000000" }, { 1.234321234321234e24L, "123432123432123**********.000000" }, { 1.234321234321234e25L, "123432123432123***********.000000" }, { 1.234321234321234e26L, "123432123432123************.000000" }, { 1.234321234321234e27L, "123432123432123*************.000000" }, { 1.234321234321234e28L, "123432123432123**************.000000" }, { 1.234321234321234e29L, "123432123432123***************.000000" }, { 1.234321234321234e30L, "123432123432123****************.000000" }, { 1.234321234321234e31L, "123432123432123*****************.000000" }, { 1.234321234321234e32L, "123432123432123******************.000000" }, { 1.234321234321234e33L, "123432123432123*******************.000000" }, { 1.234321234321234e34L, "123432123432123********************.000000" }, { 1.234321234321234e35L, "123432123432123*********************.000000" }, { 1.234321234321234e36L, "123432123432123**********************.000000" } }; size_t k; for (k = 0; k < SIZEOF (data); k++) { char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf", data[k].value); ASSERT (strmatch (data[k].string, result)); ASSERT (retval == strlen (result)); } } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", -0.03125L, 33, 44, 55); ASSERT (strcmp (result, "-0.031250 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", 0.0L, 33, 44, 55); ASSERT (strcmp (result, "0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", minus_zerol, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", 1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0 || strcmp (result, "infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0 || strcmp (result, "-infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) { /* Quiet NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Signalling NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities, Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in Intel IA-64 Architecture Software Developer's Manual, Volume 1: Application Architecture. Table 5-2 "Floating-Point Register Encodings" Figure 5-6 "Memory to Floating-Point Register Data Translation" */ { /* Pseudo-NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Infinity. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Zero. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Unnormalized number. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Denormal. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lf %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #endif { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%10Lf %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-10Lf %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+Lf %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "+1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% Lf %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#Lf %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "1.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.Lf %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "2. 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015Lf %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "00001234.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015Lf %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, " -inf 33") == 0 || strcmp (result, " -infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050Lf %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.Lf %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "1234 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2Lf %d", 999.951L, 33, 44, 55); ASSERT (strcmp (result, "999.95 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2Lf %d", 999.996L, 33, 44, 55); ASSERT (strcmp (result, "1000.00 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the %F format directive. */ { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", 12.75, 33, 44, 55); ASSERT (strcmp (result, "12.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", 1234567.0, 33, 44, 55); ASSERT (strcmp (result, "1234567.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", -0.03125, 33, 44, 55); ASSERT (strcmp (result, "-0.031250 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", 0.0, 33, 44, 55); ASSERT (strcmp (result, "0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", -zerod, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", 1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "INF 33") == 0 || strcmp (result, "INFINITY 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "-INF 33") == 0 || strcmp (result, "-INFINITY 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%F %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 1) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015F %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "00001234.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015F %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, " -INF 33") == 0 || strcmp (result, " -INFINITY 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.F %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "1234 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2F %d", 999.951, 33, 44, 55); ASSERT (strcmp (result, "999.95 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2F %d", 999.996, 33, 44, 55); ASSERT (strcmp (result, "1000.00 33") == 0); ASSERT (retval == strlen (result)); } { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", 12.75L, 33, 44, 55); ASSERT (strcmp (result, "12.750000 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", 1234567.0L, 33, 44, 55); ASSERT (strcmp (result, "1234567.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", -0.03125L, 33, 44, 55); ASSERT (strcmp (result, "-0.031250 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", 0.0L, 33, 44, 55); ASSERT (strcmp (result, "0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", minus_zerol, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", 1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "INF 33") == 0 || strcmp (result, "INFINITY 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "-INF 33") == 0 || strcmp (result, "-INFINITY 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%LF %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 1) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015LF %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "00001234.000000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015LF %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, " -INF 33") == 0 || strcmp (result, " -INFINITY 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.LF %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "1234 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2LF %d", 999.951L, 33, 44, 55); ASSERT (strcmp (result, "999.95 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.2LF %d", 999.996L, 33, 44, 55); ASSERT (strcmp (result, "1000.00 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the %e format directive. */ { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", 12.75, 33, 44, 55); ASSERT (strcmp (result, "1.275000e+01 33") == 0 || strcmp (result, "1.275000e+001 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", 1234567.0, 33, 44, 55); ASSERT (strcmp (result, "1.234567e+06 33") == 0 || strcmp (result, "1.234567e+006 33") == 0); ASSERT (retval == strlen (result)); } { /* Small and large positive numbers. */ static struct { double value; const char *string; } data[] = { { 1.234321234321234e-37, "1.234321e-37" }, { 1.234321234321234e-36, "1.234321e-36" }, { 1.234321234321234e-35, "1.234321e-35" }, { 1.234321234321234e-34, "1.234321e-34" }, { 1.234321234321234e-33, "1.234321e-33" }, { 1.234321234321234e-32, "1.234321e-32" }, { 1.234321234321234e-31, "1.234321e-31" }, { 1.234321234321234e-30, "1.234321e-30" }, { 1.234321234321234e-29, "1.234321e-29" }, { 1.234321234321234e-28, "1.234321e-28" }, { 1.234321234321234e-27, "1.234321e-27" }, { 1.234321234321234e-26, "1.234321e-26" }, { 1.234321234321234e-25, "1.234321e-25" }, { 1.234321234321234e-24, "1.234321e-24" }, { 1.234321234321234e-23, "1.234321e-23" }, { 1.234321234321234e-22, "1.234321e-22" }, { 1.234321234321234e-21, "1.234321e-21" }, { 1.234321234321234e-20, "1.234321e-20" }, { 1.234321234321234e-19, "1.234321e-19" }, { 1.234321234321234e-18, "1.234321e-18" }, { 1.234321234321234e-17, "1.234321e-17" }, { 1.234321234321234e-16, "1.234321e-16" }, { 1.234321234321234e-15, "1.234321e-15" }, { 1.234321234321234e-14, "1.234321e-14" }, { 1.234321234321234e-13, "1.234321e-13" }, { 1.234321234321234e-12, "1.234321e-12" }, { 1.234321234321234e-11, "1.234321e-11" }, { 1.234321234321234e-10, "1.234321e-10" }, { 1.234321234321234e-9, "1.234321e-09" }, { 1.234321234321234e-8, "1.234321e-08" }, { 1.234321234321234e-7, "1.234321e-07" }, { 1.234321234321234e-6, "1.234321e-06" }, { 1.234321234321234e-5, "1.234321e-05" }, { 1.234321234321234e-4, "1.234321e-04" }, { 1.234321234321234e-3, "1.234321e-03" }, { 1.234321234321234e-2, "1.234321e-02" }, { 1.234321234321234e-1, "1.234321e-01" }, { 1.234321234321234, "1.234321e+00" }, { 1.234321234321234e1, "1.234321e+01" }, { 1.234321234321234e2, "1.234321e+02" }, { 1.234321234321234e3, "1.234321e+03" }, { 1.234321234321234e4, "1.234321e+04" }, { 1.234321234321234e5, "1.234321e+05" }, { 1.234321234321234e6, "1.234321e+06" }, { 1.234321234321234e7, "1.234321e+07" }, { 1.234321234321234e8, "1.234321e+08" }, { 1.234321234321234e9, "1.234321e+09" }, { 1.234321234321234e10, "1.234321e+10" }, { 1.234321234321234e11, "1.234321e+11" }, { 1.234321234321234e12, "1.234321e+12" }, { 1.234321234321234e13, "1.234321e+13" }, { 1.234321234321234e14, "1.234321e+14" }, { 1.234321234321234e15, "1.234321e+15" }, { 1.234321234321234e16, "1.234321e+16" }, { 1.234321234321234e17, "1.234321e+17" }, { 1.234321234321234e18, "1.234321e+18" }, { 1.234321234321234e19, "1.234321e+19" }, { 1.234321234321234e20, "1.234321e+20" }, { 1.234321234321234e21, "1.234321e+21" }, { 1.234321234321234e22, "1.234321e+22" }, { 1.234321234321234e23, "1.234321e+23" }, { 1.234321234321234e24, "1.234321e+24" }, { 1.234321234321234e25, "1.234321e+25" }, { 1.234321234321234e26, "1.234321e+26" }, { 1.234321234321234e27, "1.234321e+27" }, { 1.234321234321234e28, "1.234321e+28" }, { 1.234321234321234e29, "1.234321e+29" }, { 1.234321234321234e30, "1.234321e+30" }, { 1.234321234321234e31, "1.234321e+31" }, { 1.234321234321234e32, "1.234321e+32" }, { 1.234321234321234e33, "1.234321e+33" }, { 1.234321234321234e34, "1.234321e+34" }, { 1.234321234321234e35, "1.234321e+35" }, { 1.234321234321234e36, "1.234321e+36" } }; size_t k; for (k = 0; k < SIZEOF (data); k++) { char result[100]; int retval = my_snprintf (result, sizeof (result), "%e", data[k].value); const char *expected = data[k].string; ASSERT (strcmp (result, expected) == 0 /* Some implementations produce exponents with 3 digits. */ || (strlen (result) == strlen (expected) + 1 && memcmp (result, expected, strlen (expected) - 2) == 0 && result[strlen (expected) - 2] == '0' && strcmp (result + strlen (expected) - 1, expected + strlen (expected) - 2) == 0)); ASSERT (retval == strlen (result)); } } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", -0.03125, 33, 44, 55); ASSERT (strcmp (result, "-3.125000e-02 33") == 0 || strcmp (result, "-3.125000e-002 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", 0.0, 33, 44, 55); ASSERT (strcmp (result, "0.000000e+00 33") == 0 || strcmp (result, "0.000000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", -zerod, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0.000000e+00 33") == 0 || strcmp (result, "-0.000000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", 1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0 || strcmp (result, "infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0 || strcmp (result, "-infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%e %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%15e %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 1.750000e+00 33") == 0 || strcmp (result, " 1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-15e %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "1.750000e+00 33") == 0 || strcmp (result, "1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+e %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "+1.750000e+00 33") == 0 || strcmp (result, "+1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% e %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 1.750000e+00 33") == 0 || strcmp (result, " 1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#e %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "1.750000e+00 33") == 0 || strcmp (result, "1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.e %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "2.e+00 33") == 0 || strcmp (result, "2.e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.e %d", 9.75, 33, 44, 55); ASSERT (strcmp (result, "1.e+01 33") == 0 || strcmp (result, "1.e+001 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015e %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "0001.234000e+03 33") == 0 || strcmp (result, "001.234000e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015e %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, " -inf 33") == 0 || strcmp (result, " -infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050e %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.e %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "1e+03 33") == 0 || strcmp (result, "1e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.4e %d", 999.951, 33, 44, 55); ASSERT (strcmp (result, "9.9995e+02 33") == 0 || strcmp (result, "9.9995e+002 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.4e %d", 999.996, 33, 44, 55); ASSERT (strcmp (result, "1.0000e+03 33") == 0 || strcmp (result, "1.0000e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", 12.75L, 33, 44, 55); ASSERT (strcmp (result, "1.275000e+01 33") == 0 || strcmp (result, "1.275000e+001 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", 1234567.0L, 33, 44, 55); ASSERT (strcmp (result, "1.234567e+06 33") == 0 || strcmp (result, "1.234567e+006 33") == 0); ASSERT (retval == strlen (result)); } { /* Small and large positive numbers. */ static struct { long double value; const char *string; } data[] = { { 1.234321234321234e-37L, "1.234321e-37" }, { 1.234321234321234e-36L, "1.234321e-36" }, { 1.234321234321234e-35L, "1.234321e-35" }, { 1.234321234321234e-34L, "1.234321e-34" }, { 1.234321234321234e-33L, "1.234321e-33" }, { 1.234321234321234e-32L, "1.234321e-32" }, { 1.234321234321234e-31L, "1.234321e-31" }, { 1.234321234321234e-30L, "1.234321e-30" }, { 1.234321234321234e-29L, "1.234321e-29" }, { 1.234321234321234e-28L, "1.234321e-28" }, { 1.234321234321234e-27L, "1.234321e-27" }, { 1.234321234321234e-26L, "1.234321e-26" }, { 1.234321234321234e-25L, "1.234321e-25" }, { 1.234321234321234e-24L, "1.234321e-24" }, { 1.234321234321234e-23L, "1.234321e-23" }, { 1.234321234321234e-22L, "1.234321e-22" }, { 1.234321234321234e-21L, "1.234321e-21" }, { 1.234321234321234e-20L, "1.234321e-20" }, { 1.234321234321234e-19L, "1.234321e-19" }, { 1.234321234321234e-18L, "1.234321e-18" }, { 1.234321234321234e-17L, "1.234321e-17" }, { 1.234321234321234e-16L, "1.234321e-16" }, { 1.234321234321234e-15L, "1.234321e-15" }, { 1.234321234321234e-14L, "1.234321e-14" }, { 1.234321234321234e-13L, "1.234321e-13" }, { 1.234321234321234e-12L, "1.234321e-12" }, { 1.234321234321234e-11L, "1.234321e-11" }, { 1.234321234321234e-10L, "1.234321e-10" }, { 1.234321234321234e-9L, "1.234321e-09" }, { 1.234321234321234e-8L, "1.234321e-08" }, { 1.234321234321234e-7L, "1.234321e-07" }, { 1.234321234321234e-6L, "1.234321e-06" }, { 1.234321234321234e-5L, "1.234321e-05" }, { 1.234321234321234e-4L, "1.234321e-04" }, { 1.234321234321234e-3L, "1.234321e-03" }, { 1.234321234321234e-2L, "1.234321e-02" }, { 1.234321234321234e-1L, "1.234321e-01" }, { 1.234321234321234L, "1.234321e+00" }, { 1.234321234321234e1L, "1.234321e+01" }, { 1.234321234321234e2L, "1.234321e+02" }, { 1.234321234321234e3L, "1.234321e+03" }, { 1.234321234321234e4L, "1.234321e+04" }, { 1.234321234321234e5L, "1.234321e+05" }, { 1.234321234321234e6L, "1.234321e+06" }, { 1.234321234321234e7L, "1.234321e+07" }, { 1.234321234321234e8L, "1.234321e+08" }, { 1.234321234321234e9L, "1.234321e+09" }, { 1.234321234321234e10L, "1.234321e+10" }, { 1.234321234321234e11L, "1.234321e+11" }, { 1.234321234321234e12L, "1.234321e+12" }, { 1.234321234321234e13L, "1.234321e+13" }, { 1.234321234321234e14L, "1.234321e+14" }, { 1.234321234321234e15L, "1.234321e+15" }, { 1.234321234321234e16L, "1.234321e+16" }, { 1.234321234321234e17L, "1.234321e+17" }, { 1.234321234321234e18L, "1.234321e+18" }, { 1.234321234321234e19L, "1.234321e+19" }, { 1.234321234321234e20L, "1.234321e+20" }, { 1.234321234321234e21L, "1.234321e+21" }, { 1.234321234321234e22L, "1.234321e+22" }, { 1.234321234321234e23L, "1.234321e+23" }, { 1.234321234321234e24L, "1.234321e+24" }, { 1.234321234321234e25L, "1.234321e+25" }, { 1.234321234321234e26L, "1.234321e+26" }, { 1.234321234321234e27L, "1.234321e+27" }, { 1.234321234321234e28L, "1.234321e+28" }, { 1.234321234321234e29L, "1.234321e+29" }, { 1.234321234321234e30L, "1.234321e+30" }, { 1.234321234321234e31L, "1.234321e+31" }, { 1.234321234321234e32L, "1.234321e+32" }, { 1.234321234321234e33L, "1.234321e+33" }, { 1.234321234321234e34L, "1.234321e+34" }, { 1.234321234321234e35L, "1.234321e+35" }, { 1.234321234321234e36L, "1.234321e+36" } }; size_t k; for (k = 0; k < SIZEOF (data); k++) { char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le", data[k].value); const char *expected = data[k].string; ASSERT (strcmp (result, expected) == 0 /* Some implementations produce exponents with 3 digits. */ || (strlen (result) == strlen (expected) + 1 && memcmp (result, expected, strlen (expected) - 2) == 0 && result[strlen (expected) - 2] == '0' && strcmp (result + strlen (expected) - 1, expected + strlen (expected) - 2) == 0)); ASSERT (retval == strlen (result)); } } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", -0.03125L, 33, 44, 55); ASSERT (strcmp (result, "-3.125000e-02 33") == 0 || strcmp (result, "-3.125000e-002 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", 0.0L, 33, 44, 55); ASSERT (strcmp (result, "0.000000e+00 33") == 0 || strcmp (result, "0.000000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", minus_zerol, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0.000000e+00 33") == 0 || strcmp (result, "-0.000000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", 1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0 || strcmp (result, "infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0 || strcmp (result, "-infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) { /* Quiet NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Signalling NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities, Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in Intel IA-64 Architecture Software Developer's Manual, Volume 1: Application Architecture. Table 5-2 "Floating-Point Register Encodings" Figure 5-6 "Memory to Floating-Point Register Data Translation" */ { /* Pseudo-NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Infinity. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Zero. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Unnormalized number. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Denormal. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Le %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #endif { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%15Le %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 1.750000e+00 33") == 0 || strcmp (result, " 1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-15Le %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "1.750000e+00 33") == 0 || strcmp (result, "1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+Le %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "+1.750000e+00 33") == 0 || strcmp (result, "+1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% Le %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 1.750000e+00 33") == 0 || strcmp (result, " 1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#Le %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "1.750000e+00 33") == 0 || strcmp (result, "1.750000e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.Le %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "2.e+00 33") == 0 || strcmp (result, "2.e+000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.Le %d", 9.75L, 33, 44, 55); ASSERT (strcmp (result, "1.e+01 33") == 0 || strcmp (result, "1.e+001 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015Le %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "0001.234000e+03 33") == 0 || strcmp (result, "001.234000e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015Le %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, " -inf 33") == 0 || strcmp (result, " -infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050Le %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.Le %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "1e+03 33") == 0 || strcmp (result, "1e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.4Le %d", 999.951L, 33, 44, 55); ASSERT (strcmp (result, "9.9995e+02 33") == 0 || strcmp (result, "9.9995e+002 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.4Le %d", 999.996L, 33, 44, 55); ASSERT (strcmp (result, "1.0000e+03 33") == 0 || strcmp (result, "1.0000e+003 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the %g format directive. */ { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", 12.75, 33, 44, 55); ASSERT (strcmp (result, "12.75 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", 1234567.0, 33, 44, 55); ASSERT (strcmp (result, "1.23457e+06 33") == 0 || strcmp (result, "1.23457e+006 33") == 0); ASSERT (retval == strlen (result)); } { /* Small and large positive numbers. */ static struct { double value; const char *string; } data[] = { { 1.234321234321234e-37, "1.23432e-37" }, { 1.234321234321234e-36, "1.23432e-36" }, { 1.234321234321234e-35, "1.23432e-35" }, { 1.234321234321234e-34, "1.23432e-34" }, { 1.234321234321234e-33, "1.23432e-33" }, { 1.234321234321234e-32, "1.23432e-32" }, { 1.234321234321234e-31, "1.23432e-31" }, { 1.234321234321234e-30, "1.23432e-30" }, { 1.234321234321234e-29, "1.23432e-29" }, { 1.234321234321234e-28, "1.23432e-28" }, { 1.234321234321234e-27, "1.23432e-27" }, { 1.234321234321234e-26, "1.23432e-26" }, { 1.234321234321234e-25, "1.23432e-25" }, { 1.234321234321234e-24, "1.23432e-24" }, { 1.234321234321234e-23, "1.23432e-23" }, { 1.234321234321234e-22, "1.23432e-22" }, { 1.234321234321234e-21, "1.23432e-21" }, { 1.234321234321234e-20, "1.23432e-20" }, { 1.234321234321234e-19, "1.23432e-19" }, { 1.234321234321234e-18, "1.23432e-18" }, { 1.234321234321234e-17, "1.23432e-17" }, { 1.234321234321234e-16, "1.23432e-16" }, { 1.234321234321234e-15, "1.23432e-15" }, { 1.234321234321234e-14, "1.23432e-14" }, { 1.234321234321234e-13, "1.23432e-13" }, { 1.234321234321234e-12, "1.23432e-12" }, { 1.234321234321234e-11, "1.23432e-11" }, { 1.234321234321234e-10, "1.23432e-10" }, { 1.234321234321234e-9, "1.23432e-09" }, { 1.234321234321234e-8, "1.23432e-08" }, { 1.234321234321234e-7, "1.23432e-07" }, { 1.234321234321234e-6, "1.23432e-06" }, { 1.234321234321234e-5, "1.23432e-05" }, { 1.234321234321234e-4, "0.000123432" }, { 1.234321234321234e-3, "0.00123432" }, { 1.234321234321234e-2, "0.0123432" }, { 1.234321234321234e-1, "0.123432" }, { 1.234321234321234, "1.23432" }, { 1.234321234321234e1, "12.3432" }, { 1.234321234321234e2, "123.432" }, { 1.234321234321234e3, "1234.32" }, { 1.234321234321234e4, "12343.2" }, { 1.234321234321234e5, "123432" }, { 1.234321234321234e6, "1.23432e+06" }, { 1.234321234321234e7, "1.23432e+07" }, { 1.234321234321234e8, "1.23432e+08" }, { 1.234321234321234e9, "1.23432e+09" }, { 1.234321234321234e10, "1.23432e+10" }, { 1.234321234321234e11, "1.23432e+11" }, { 1.234321234321234e12, "1.23432e+12" }, { 1.234321234321234e13, "1.23432e+13" }, { 1.234321234321234e14, "1.23432e+14" }, { 1.234321234321234e15, "1.23432e+15" }, { 1.234321234321234e16, "1.23432e+16" }, { 1.234321234321234e17, "1.23432e+17" }, { 1.234321234321234e18, "1.23432e+18" }, { 1.234321234321234e19, "1.23432e+19" }, { 1.234321234321234e20, "1.23432e+20" }, { 1.234321234321234e21, "1.23432e+21" }, { 1.234321234321234e22, "1.23432e+22" }, { 1.234321234321234e23, "1.23432e+23" }, { 1.234321234321234e24, "1.23432e+24" }, { 1.234321234321234e25, "1.23432e+25" }, { 1.234321234321234e26, "1.23432e+26" }, { 1.234321234321234e27, "1.23432e+27" }, { 1.234321234321234e28, "1.23432e+28" }, { 1.234321234321234e29, "1.23432e+29" }, { 1.234321234321234e30, "1.23432e+30" }, { 1.234321234321234e31, "1.23432e+31" }, { 1.234321234321234e32, "1.23432e+32" }, { 1.234321234321234e33, "1.23432e+33" }, { 1.234321234321234e34, "1.23432e+34" }, { 1.234321234321234e35, "1.23432e+35" }, { 1.234321234321234e36, "1.23432e+36" } }; size_t k; for (k = 0; k < SIZEOF (data); k++) { char result[100]; int retval = my_snprintf (result, sizeof (result), "%g", data[k].value); const char *expected = data[k].string; ASSERT (strcmp (result, expected) == 0 /* Some implementations produce exponents with 3 digits. */ || (expected[strlen (expected) - 4] == 'e' && strlen (result) == strlen (expected) + 1 && memcmp (result, expected, strlen (expected) - 2) == 0 && result[strlen (expected) - 2] == '0' && strcmp (result + strlen (expected) - 1, expected + strlen (expected) - 2) == 0)); ASSERT (retval == strlen (result)); } } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", -0.03125, 33, 44, 55); ASSERT (strcmp (result, "-0.03125 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", 0.0, 33, 44, 55); ASSERT (strcmp (result, "0 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", -zerod, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", 1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0 || strcmp (result, "infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0 || strcmp (result, "-infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%g %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%10g %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-10g %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+g %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "+1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% g %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, " 1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#g %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "1.75000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.g %d", 1.75, 33, 44, 55); ASSERT (strcmp (result, "2. 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.g %d", 9.75, 33, 44, 55); ASSERT (strcmp (result, "1.e+01 33") == 0 || strcmp (result, "1.e+001 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%010g %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "0000001234 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015g %d", -1.0 / 0.0, 33, 44, 55); ASSERT (strcmp (result, " -inf 33") == 0 || strcmp (result, " -infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050g %d", NaNd (), 33, 44, 55); ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.g %d", 1234.0, 33, 44, 55); ASSERT (strcmp (result, "1e+03 33") == 0 || strcmp (result, "1e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.5g %d", 999.951, 33, 44, 55); ASSERT (strcmp (result, "999.95 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.5g %d", 999.996, 33, 44, 55); ASSERT (strcmp (result, "1000 33") == 0); ASSERT (retval == strlen (result)); } { /* A positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", 12.75L, 33, 44, 55); ASSERT (strcmp (result, "12.75 33") == 0); ASSERT (retval == strlen (result)); } { /* A larger positive number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", 1234567.0L, 33, 44, 55); ASSERT (strcmp (result, "1.23457e+06 33") == 0 || strcmp (result, "1.23457e+006 33") == 0); ASSERT (retval == strlen (result)); } { /* Small and large positive numbers. */ static struct { long double value; const char *string; } data[] = { { 1.234321234321234e-37L, "1.23432e-37" }, { 1.234321234321234e-36L, "1.23432e-36" }, { 1.234321234321234e-35L, "1.23432e-35" }, { 1.234321234321234e-34L, "1.23432e-34" }, { 1.234321234321234e-33L, "1.23432e-33" }, { 1.234321234321234e-32L, "1.23432e-32" }, { 1.234321234321234e-31L, "1.23432e-31" }, { 1.234321234321234e-30L, "1.23432e-30" }, { 1.234321234321234e-29L, "1.23432e-29" }, { 1.234321234321234e-28L, "1.23432e-28" }, { 1.234321234321234e-27L, "1.23432e-27" }, { 1.234321234321234e-26L, "1.23432e-26" }, { 1.234321234321234e-25L, "1.23432e-25" }, { 1.234321234321234e-24L, "1.23432e-24" }, { 1.234321234321234e-23L, "1.23432e-23" }, { 1.234321234321234e-22L, "1.23432e-22" }, { 1.234321234321234e-21L, "1.23432e-21" }, { 1.234321234321234e-20L, "1.23432e-20" }, { 1.234321234321234e-19L, "1.23432e-19" }, { 1.234321234321234e-18L, "1.23432e-18" }, { 1.234321234321234e-17L, "1.23432e-17" }, { 1.234321234321234e-16L, "1.23432e-16" }, { 1.234321234321234e-15L, "1.23432e-15" }, { 1.234321234321234e-14L, "1.23432e-14" }, { 1.234321234321234e-13L, "1.23432e-13" }, { 1.234321234321234e-12L, "1.23432e-12" }, { 1.234321234321234e-11L, "1.23432e-11" }, { 1.234321234321234e-10L, "1.23432e-10" }, { 1.234321234321234e-9L, "1.23432e-09" }, { 1.234321234321234e-8L, "1.23432e-08" }, { 1.234321234321234e-7L, "1.23432e-07" }, { 1.234321234321234e-6L, "1.23432e-06" }, { 1.234321234321234e-5L, "1.23432e-05" }, { 1.234321234321234e-4L, "0.000123432" }, { 1.234321234321234e-3L, "0.00123432" }, { 1.234321234321234e-2L, "0.0123432" }, { 1.234321234321234e-1L, "0.123432" }, { 1.234321234321234L, "1.23432" }, { 1.234321234321234e1L, "12.3432" }, { 1.234321234321234e2L, "123.432" }, { 1.234321234321234e3L, "1234.32" }, { 1.234321234321234e4L, "12343.2" }, { 1.234321234321234e5L, "123432" }, { 1.234321234321234e6L, "1.23432e+06" }, { 1.234321234321234e7L, "1.23432e+07" }, { 1.234321234321234e8L, "1.23432e+08" }, { 1.234321234321234e9L, "1.23432e+09" }, { 1.234321234321234e10L, "1.23432e+10" }, { 1.234321234321234e11L, "1.23432e+11" }, { 1.234321234321234e12L, "1.23432e+12" }, { 1.234321234321234e13L, "1.23432e+13" }, { 1.234321234321234e14L, "1.23432e+14" }, { 1.234321234321234e15L, "1.23432e+15" }, { 1.234321234321234e16L, "1.23432e+16" }, { 1.234321234321234e17L, "1.23432e+17" }, { 1.234321234321234e18L, "1.23432e+18" }, { 1.234321234321234e19L, "1.23432e+19" }, { 1.234321234321234e20L, "1.23432e+20" }, { 1.234321234321234e21L, "1.23432e+21" }, { 1.234321234321234e22L, "1.23432e+22" }, { 1.234321234321234e23L, "1.23432e+23" }, { 1.234321234321234e24L, "1.23432e+24" }, { 1.234321234321234e25L, "1.23432e+25" }, { 1.234321234321234e26L, "1.23432e+26" }, { 1.234321234321234e27L, "1.23432e+27" }, { 1.234321234321234e28L, "1.23432e+28" }, { 1.234321234321234e29L, "1.23432e+29" }, { 1.234321234321234e30L, "1.23432e+30" }, { 1.234321234321234e31L, "1.23432e+31" }, { 1.234321234321234e32L, "1.23432e+32" }, { 1.234321234321234e33L, "1.23432e+33" }, { 1.234321234321234e34L, "1.23432e+34" }, { 1.234321234321234e35L, "1.23432e+35" }, { 1.234321234321234e36L, "1.23432e+36" } }; size_t k; for (k = 0; k < SIZEOF (data); k++) { char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg", data[k].value); const char *expected = data[k].string; ASSERT (strcmp (result, expected) == 0 /* Some implementations produce exponents with 3 digits. */ || (expected[strlen (expected) - 4] == 'e' && strlen (result) == strlen (expected) + 1 && memcmp (result, expected, strlen (expected) - 2) == 0 && result[strlen (expected) - 2] == '0' && strcmp (result + strlen (expected) - 1, expected + strlen (expected) - 2) == 0)); ASSERT (retval == strlen (result)); } } { /* A negative number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", -0.03125L, 33, 44, 55); ASSERT (strcmp (result, "-0.03125 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", 0.0L, 33, 44, 55); ASSERT (strcmp (result, "0 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative zero. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", minus_zerol, 33, 44, 55); if (have_minus_zero ()) ASSERT (strcmp (result, "-0 33") == 0); ASSERT (retval == strlen (result)); } { /* Positive infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", 1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "inf 33") == 0 || strcmp (result, "infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* Negative infinity. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, "-inf 33") == 0 || strcmp (result, "-infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) { /* Quiet NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Signalling NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities, Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in Intel IA-64 Architecture Software Developer's Manual, Volume 1: Application Architecture. Table 5-2 "Floating-Point Register Encodings" Figure 5-6 "Memory to Floating-Point Register Data Translation" */ { /* Pseudo-NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Infinity. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Zero. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Unnormalized number. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Pseudo-Denormal. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; char result[100]; int retval = my_snprintf (result, sizeof (result), "%Lg %d", x.value, 33, 44, 55); ASSERT (strlen (result) >= 3 + 3 && strisnan (result, 0, strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } #endif { /* Width. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%10Lg %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_LEFT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%-10Lg %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SHOWSIGN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%+Lg %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "+1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_SPACE. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "% Lg %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, " 1.75 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#Lg %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "1.75000 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.Lg %d", 1.75L, 33, 44, 55); ASSERT (strcmp (result, "2. 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ALT. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%#.Lg %d", 9.75L, 33, 44, 55); ASSERT (strcmp (result, "1.e+01 33") == 0 || strcmp (result, "1.e+001 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with finite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%010Lg %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "0000001234 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with infinite number. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%015Lg %d", -1.0L / 0.0L, 33, 44, 55); ASSERT (strcmp (result, " -inf 33") == 0 || strcmp (result, " -infinity 33") == 0); ASSERT (retval == strlen (result)); } { /* FLAG_ZERO with NaN. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%050Lg %d", NaNl (), 33, 44, 55); ASSERT (strlen (result) == 50 + 3 && strisnan (result, strspn (result, " "), strlen (result) - 3, 0) && strcmp (result + strlen (result) - 3, " 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.Lg %d", 1234.0L, 33, 44, 55); ASSERT (strcmp (result, "1e+03 33") == 0 || strcmp (result, "1e+003 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with no rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.5Lg %d", 999.951L, 33, 44, 55); ASSERT (strcmp (result, "999.95 33") == 0); ASSERT (retval == strlen (result)); } { /* Precision with rounding. */ char result[100]; int retval = my_snprintf (result, sizeof (result), "%.5Lg %d", 999.996L, 33, 44, 55); ASSERT (strcmp (result, "1000 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the %n format directive. */ { int count = -1; char result[100]; int retval = my_snprintf (result, sizeof (result), "%d %n", 123, &count, 33, 44, 55); ASSERT (strcmp (result, "123 ") == 0); ASSERT (retval == strlen (result)); ASSERT (count == 4); } /* Test the support of the POSIX/XSI format strings with positions. */ { char result[100]; int retval = my_snprintf (result, sizeof (result), "%2$d %1$d", 33, 55); ASSERT (strcmp (result, "55 33") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the grouping flag. */ { char result[100]; int retval = my_snprintf (result, sizeof (result), "%'d %d", 1234567, 99); ASSERT (result[strlen (result) - 1] == '9'); ASSERT (retval == strlen (result)); } /* Test the support of the left-adjust flag. */ { char result[100]; int retval = my_snprintf (result, sizeof (result), "a%*sc", -3, "b"); ASSERT (strcmp (result, "ab c") == 0); ASSERT (retval == strlen (result)); } { char result[100]; int retval = my_snprintf (result, sizeof (result), "a%-*sc", 3, "b"); ASSERT (strcmp (result, "ab c") == 0); ASSERT (retval == strlen (result)); } { char result[100]; int retval = my_snprintf (result, sizeof (result), "a%-*sc", -3, "b"); ASSERT (strcmp (result, "ab c") == 0); ASSERT (retval == strlen (result)); } /* Test the support of large precision. */ { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%.4000d %d", 1234567, 99); size_t i; for (i = 0; i < 4000 - 7; i++) ASSERT (result[i] == '0'); ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0); ASSERT (retval == strlen (result)); } { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%.*d %d", 4000, 1234567, 99); size_t i; for (i = 0; i < 4000 - 7; i++) ASSERT (result[i] == '0'); ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0); ASSERT (retval == strlen (result)); } { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%.4000d %d", -1234567, 99); size_t i; ASSERT (result[0] == '-'); for (i = 0; i < 4000 - 7; i++) ASSERT (result[1 + i] == '0'); ASSERT (strcmp (result + 1 + 4000 - 7, "1234567 99") == 0); ASSERT (retval == strlen (result)); } { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%.4000u %d", 1234567, 99); size_t i; for (i = 0; i < 4000 - 7; i++) ASSERT (result[i] == '0'); ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0); ASSERT (retval == strlen (result)); } { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%.4000o %d", 1234567, 99); size_t i; for (i = 0; i < 4000 - 7; i++) ASSERT (result[i] == '0'); ASSERT (strcmp (result + 4000 - 7, "4553207 99") == 0); ASSERT (retval == strlen (result)); } { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%.4000x %d", 1234567, 99); size_t i; for (i = 0; i < 4000 - 6; i++) ASSERT (result[i] == '0'); ASSERT (strcmp (result + 4000 - 6, "12d687 99") == 0); ASSERT (retval == strlen (result)); } { char result[5000]; int retval = my_snprintf (result, sizeof (result), "%#.4000x %d", 1234567, 99); size_t i; ASSERT (result[0] == '0'); ASSERT (result[1] == 'x'); for (i = 0; i < 4000 - 6; i++) ASSERT (result[2 + i] == '0'); ASSERT (strcmp (result + 2 + 4000 - 6, "12d687 99") == 0); ASSERT (retval == strlen (result)); } { char input[5000]; char result[5000]; int retval; size_t i; for (i = 0; i < sizeof (input) - 1; i++) input[i] = 'a' + ((1000000 / (i + 1)) % 26); input[i] = '\0'; retval = my_snprintf (result, sizeof (result), "%.4000s %d", input, 99); ASSERT (memcmp (result, input, 4000) == 0); ASSERT (strcmp (result + 4000, " 99") == 0); ASSERT (retval == strlen (result)); } /* Test the support of the %s format directive. */ /* To verify that these tests succeed, it is necessary to run them under a tool that checks against invalid memory accesses, such as ElectricFence or "valgrind --tool=memcheck". */ { size_t i; for (i = 1; i <= 8; i++) { char *block; char result[5000]; int retval; block = (char *) malloc (i); memcpy (block, "abcdefgh", i); retval = my_snprintf (result, sizeof (result), "%.*s", (int) i, block); ASSERT (memcmp (result, block, i) == 0); ASSERT (result[i] == '\0'); ASSERT (retval == strlen (result)); free (block); } } #if HAVE_WCHAR_T { size_t i; for (i = 1; i <= 8; i++) { wchar_t *block; size_t j; char result[5000]; int retval; block = (wchar_t *) malloc (i * sizeof (wchar_t)); for (j = 0; j < i; j++) block[j] = "abcdefgh"[j]; retval = my_snprintf (result, sizeof (result), "%.*ls", (int) i, block); ASSERT (memcmp (result, "abcdefgh", i) == 0); ASSERT (result[i] == '\0'); ASSERT (retval == strlen (result)); free (block); } } #endif }