kc3-lang/gnulib/m4/expm1l.m4
Branch
-
Show log
Commit
-
Hash : a923e066
Author :
Date : 2025-09-10T22:55:08
math-h: Remove support for IRIX. * lib/math.in.h (FP_ILOGB0, FP_ILOGBNAN): Remove code for IRIX. (cbrtf): Test HAVE_CBRTF instead of HAVE_DECL_CBRTF. (cbrtl): Test HAVE_CBRTL instead of HAVE_DECL_CBRTL. (copysignf): Test HAVE_COPYSIGNF instead of HAVE_DECL_COPYSIGNF. (exp2f): Test HAVE_EXP2F instead of HAVE_DECL_EXP2F. (exp2): Test HAVE_EXP2 instead of HAVE_DECL_EXP2. (exp2l): Test HAVE_EXP2L instead of HAVE_DECL_EXP2L. (expm1l): Test HAVE_EXPM1L instead of HAVE_DECL_EXPM1L. (log2f): Test HAVE_LOG2F instead of HAVE_DECL_LOG2F. (log2): Test HAVE_LOG2 instead of HAVE_DECL_LOG2. (log2l): Test HAVE_LOG2L instead of HAVE_DECL_LOG2L. (remainder): Don't test HAVE_DECL_REMAINDER. (remainderl): Test HAVE_REMAINDERL instead of HAVE_DECL_REMAINDERL. (rintf): Test HAVE_RINTF instead of HAVE_DECL_RINTF. (roundf): Test HAVE_ROUNDF instead of HAVE_DECL_ROUNDF. (round): Test HAVE_ROUND instead of HAVE_DECL_ROUND. (roundl): Test HAVE_ROUNDL instead of HAVE_DECL_ROUNDL. (isnanf, isnand): Remove code for IRIX. * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize HAVE_COPYSIGNF, HAVE_EXP2, HAVE_EXP2F, HAVE_EXP2L, HAVE_EXPM1L, HAVE_LOG2, HAVE_LOG2F, HAVE_LOG2L, HAVE_REMAINDERL, HAVE_RINTF, HAVE_ROUND, HAVE_ROUNDF, HAVE_ROUNDL. Don't initialize HAVE_DECL_CBRTF, HAVE_DECL_CBRTL, HAVE_DECL_COPYSIGNF, HAVE_DECL_EXP2, HAVE_DECL_EXP2F, HAVE_DECL_EXP2L, HAVE_DECL_EXPM1L, HAVE_DECL_LOG2, HAVE_DECL_LOG2F, HAVE_DECL_LOG2L, HAVE_DECL_REMAINDER, HAVE_DECL_REMAINDERL, HAVE_DECL_RINTF, HAVE_DECL_ROUND, HAVE_DECL_ROUNDF, HAVE_DECL_ROUNDL. * modules/math-h (Makefile.am): Substitute HAVE_COPYSIGNF, HAVE_EXP2, HAVE_EXP2F, HAVE_EXP2L, HAVE_EXPM1L, HAVE_LOG2, HAVE_LOG2F, HAVE_LOG2L, HAVE_REMAINDERL, HAVE_RINTF, HAVE_ROUND, HAVE_ROUNDF, HAVE_ROUNDL. Don't substitute HAVE_DECL_CBRTF, HAVE_DECL_CBRTL, HAVE_DECL_COPYSIGNF, HAVE_DECL_EXP2, HAVE_DECL_EXP2F, HAVE_DECL_EXP2L, HAVE_DECL_EXPM1L, HAVE_DECL_LOG2, HAVE_DECL_LOG2F, HAVE_DECL_LOG2L, HAVE_DECL_REMAINDER, HAVE_DECL_REMAINDERL, HAVE_DECL_RINTF, HAVE_DECL_ROUND, HAVE_DECL_ROUNDF, HAVE_DECL_ROUNDL. * m4/cbrtf.m4 (gl_FUNC_CBRTF_WORKS): Remove macro. (gl_FUNC_CBRTF): Don't invoke it. Don't set HAVE_DECL_CBRTF. * m4/cbrtl.m4 (gl_FUNC_CBRTL): Don't set HAVE_DECL_CBRTL. Remove test regarding cbrtl (-0.0L). * lib/cbrtl.c (cbrtl): Remove code for IRIX. * m4/copysignf.m4 (gl_FUNC_COPYSIGNF): Don't set HAVE_DECL_COPYSIGNF. * m4/exp2f.m4 (gl_FUNC_EXP2F): Don't set HAVE_DECL_EXP2F. * m4/exp2.m4 (gl_FUNC_EXP2): Don't set HAVE_DECL_EXP2. * m4/exp2l.m4 (gl_FUNC_EXP2L): Don't set HAVE_DECL_EXP2L. Remove code for IRIX. Remove test regarding exp2l (-Inf). * m4/expm1l.m4 (gl_FUNC_EXPM1L): Don't set HAVE_DECL_EXPM1L. Remove code for IRIX. * m4/log2f.m4 (gl_FUNC_LOG2F): Don't set HAVE_DECL_LOG2F. * m4/log2.m4 (gl_FUNC_LOG2): Don't set HAVE_DECL_LOG2. * lib/log2.c (log2): Remove code for IRIX. * m4/log2l.m4 (gl_FUNC_LOG2L): Don't set HAVE_DECL_LOG2L. Remove code for IRIX. * lib/log2l.c (log2l): Remove code for IRIX. * m4/remainder.m4 (gl_FUNC_REMAINDER): Don't set HAVE_DECL_REMAINDER. * m4/remainderl.m4 (gl_FUNC_REMAINDERL): Don't set HAVE_DECL_REMAINDERL. Remove code for IRIX. * m4/rintf.m4 (gl_FUNC_RINTF): Don't set HAVE_DECL_RINTF. * m4/roundf.m4 (gl_FUNC_ROUNDF): Don't set HAVE_DECL_ROUNDF. * m4/round.m4 (gl_FUNC_ROUND): Don't set HAVE_DECL_ROUND. * m4/roundl.m4 (gl_FUNC_ROUNDL): Don't set HAVE_DECL_ROUNDL.
-
m4/expm1l.m4
-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
# expm1l.m4 # serial 15 dnl Copyright (C) 2010-2025 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl This file is offered as-is, without any warranty. AC_DEFUN([gl_FUNC_EXPM1L], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Persuade glibc <math.h> to declare expm1l(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) EXPM1L_LIBM= AC_CACHE_CHECK([whether expm1l() can be used without linking with libm], [gl_cv_func_expm1l_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> extern #ifdef __cplusplus "C" #endif long double expm1l (long double); long double (* volatile funcptr) (long double) = expm1l; long double x;]], [[return funcptr (x) > 0.5 || expm1l (x) > 0.5;]])], [gl_cv_func_expm1l_no_libm=yes], [gl_cv_func_expm1l_no_libm=no]) ]) if test $gl_cv_func_expm1l_no_libm = no; then AC_CACHE_CHECK([whether expm1l() can be used with libm], [gl_cv_func_expm1l_in_libm], [ saved_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <math.h> extern #ifdef __cplusplus "C" #endif long double expm1l (long double); long double (* volatile funcptr) (long double) = expm1l; long double x;]], [[return funcptr (x) > 0.5 || expm1l (x) > 0.5;]])], [gl_cv_func_expm1l_in_libm=yes], [gl_cv_func_expm1l_in_libm=no]) LIBS="$saved_LIBS" ]) if test $gl_cv_func_expm1l_in_libm = yes; then EXPM1L_LIBM=-lm fi fi if test $gl_cv_func_expm1l_no_libm = yes \ || test $gl_cv_func_expm1l_in_libm = yes; then HAVE_EXPM1L=1 if test $REPLACE_EXPM1L = 0; then AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether expm1l works], [gl_cv_func_expm1l_works], [ saved_LIBS="$LIBS" LIBS="$LIBS $EXPM1L_LIBM" AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #ifndef __NO_MATH_INLINES # define __NO_MATH_INLINES 1 /* for glibc */ #endif #include <float.h> #include <math.h> /* Override the values of <float.h>, like done in float.in.h. */ #if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__) # undef LDBL_MANT_DIG # define LDBL_MANT_DIG 64 # undef LDBL_MIN_EXP # define LDBL_MIN_EXP (-16381) # undef LDBL_MAX_EXP # define LDBL_MAX_EXP 16384 #endif #if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__) # undef LDBL_MANT_DIG # define LDBL_MANT_DIG 64 # undef LDBL_MIN_EXP # define LDBL_MIN_EXP (-16381) # undef LDBL_MAX_EXP # define LDBL_MAX_EXP 16384 #endif #if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__ # undef LDBL_MIN_EXP # define LDBL_MIN_EXP DBL_MIN_EXP #endif #undef expm1l extern #ifdef __cplusplus "C" #endif long double expm1l (long double); static long double dummy (long double x) { return 0; } int main (int argc, char *argv[]) { long double (* volatile my_expm1l) (long double) = argc ? expm1l : dummy; int result = 0; /* This test fails on musl 1.2.2/arm64, musl 1.2.2/s390x, Mac OS X 10.5, NetBSD 10.0/x86_64. */ { const long double TWO_LDBL_MANT_DIG = /* 2^LDBL_MANT_DIG */ (long double) (1U << ((LDBL_MANT_DIG - 1) / 5)) * (long double) (1U << ((LDBL_MANT_DIG - 1 + 1) / 5)) * (long double) (1U << ((LDBL_MANT_DIG - 1 + 2) / 5)) * (long double) (1U << ((LDBL_MANT_DIG - 1 + 3) / 5)) * (long double) (1U << ((LDBL_MANT_DIG - 1 + 4) / 5)); long double x = 11.358L; long double y = my_expm1l (x); long double z = my_expm1l (- x); volatile long double t = (1.0L + y) * z; long double err = (y + t) * TWO_LDBL_MANT_DIG; if (!(err >= -100.0L && err <= 100.0L)) result |= 1; } /* This test fails on NetBSD 10.0/i386. */ { int i; long double x; volatile long double y; for (i = -1, x = 0.5L; i > LDBL_MIN_EXP; i--, x *= 0.5L) ; /* Here i = LDBL_MIN_EXP, x = 2^LDBL_MIN_EXP. */ y = my_expm1l (x); if (!(y >= x)) result |= 2; } return result; } ]])], [gl_cv_func_expm1l_works=yes], [gl_cv_func_expm1l_works=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_expm1l_works="guessing yes" ;; # Guess no on musl systems. *-musl* | midipix*) gl_cv_func_expm1l_works="guessing no" ;; # Guess no on NetBSD. netbsd*) gl_cv_func_expm1l_works="guessing no" ;; # Guess yes on native Windows. mingw* | windows*) gl_cv_func_expm1l_works="guessing yes" ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_expm1l_works="$gl_cross_guess_normal" ;; esac ]) LIBS="$saved_LIBS" ]) case "$gl_cv_func_expm1l_works" in *yes) ;; *) REPLACE_EXPM1L=1 ;; esac fi else HAVE_EXPM1L=0 fi if test $HAVE_EXPM1L = 0 || test $REPLACE_EXPM1L = 1; then dnl Find libraries needed to link lib/expm1l.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then AC_REQUIRE([gl_FUNC_EXPM1]) EXPM1L_LIBM="$EXPM1_LIBM" else AC_REQUIRE([gl_FUNC_ISNANL]) AC_REQUIRE([gl_FUNC_EXPL]) AC_REQUIRE([gl_FUNC_ROUNDL]) AC_REQUIRE([gl_FUNC_LDEXPL]) EXPM1L_LIBM= dnl Append $ISNANL_LIBM to EXPM1L_LIBM, avoiding gratuitous duplicates. case " $EXPM1L_LIBM " in *" $ISNANL_LIBM "*) ;; *) EXPM1L_LIBM="$EXPM1L_LIBM $ISNANL_LIBM" ;; esac dnl Append $EXPL_LIBM to EXPM1L_LIBM, avoiding gratuitous duplicates. case " $EXPM1L_LIBM " in *" $EXPL_LIBM "*) ;; *) EXPM1L_LIBM="$EXPM1L_LIBM $EXPL_LIBM" ;; esac dnl Append $ROUNDL_LIBM to EXPM1L_LIBM, avoiding gratuitous duplicates. case " $EXPM1L_LIBM " in *" $ROUNDL_LIBM "*) ;; *) EXPM1L_LIBM="$EXPM1L_LIBM $ROUNDL_LIBM" ;; esac dnl Append $LDEXPL_LIBM to EXPM1L_LIBM, avoiding gratuitous duplicates. case " $EXPM1L_LIBM " in *" $LDEXPL_LIBM "*) ;; *) EXPM1L_LIBM="$EXPM1L_LIBM $LDEXPL_LIBM" ;; esac fi fi AC_SUBST([EXPM1L_LIBM]) ])