kc3-lang/gnulib/tests/from-glibc/tst-stdbit.h
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Hash : 7b089321
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Date : 2025-01-01T09:24:36
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tests/from-glibc/tst-stdbit.h
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/* Common test support for <stdbit.h> tests. Copyright (C) 2024-2025 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #ifndef _TST_STDBIT_H #define _TST_STDBIT_H #if GNULIB_TEST_STDBIT # include <libc-config.h> #endif #include <stdbit.h> #include <stdbool.h> #if !GNULIB_TEST_STDBIT # include <array_length.h> # include <support/check.h> #else # include <stdint.h> # include <macros.h> # define array_length(a) (sizeof (a) / sizeof *(a)) # define TEST_COMPARE(a, b) ASSERT ((a) == (b)) #endif struct stdbit_test { /* The test input. */ uint64_t x; /* Expected results if that test input is converted to 8, 16, 32 or 64 bits and then passed to the function under test for that width. */ uint64_t res_8, res_16, res_32, res_64; }; #if !GNULIB_TEST_STDBIT # define TEST_TYPE(EXPR, TYPE) \ _Static_assert (_Generic ((EXPR), TYPE: 1, default: 0), "bad type") #elif ((defined __GNUC__ && 2 <= __GNUC__) \ || (defined __clang_major__ && 4 <= __clang_major__) \ || (defined __IBMC__ && 1210 <= __IBMC__ && defined __IBM__TYPEOF__) \ || (defined __SUNPRO_C && 0x5110 <= __SUNPRO_C && !__STDC__) \ || 202311 <= __STDC_VERSION__) # if __HAVE_GENERIC_SELECTION # define TEST_TYPE(EXPR, TYPE) \ static_assert (_Generic (EXPR, TYPE: 1, default: 0)) # else # define TEST_TYPE(EXPR, TYPE) static_assert (sizeof (EXPR) == sizeof (TYPE)) # endif #else /* A pre-C11 platform that lacks typeof. */ # define TEST_TYPE(EXPR, TYPE) static_assert (sizeof (TYPE) <= sizeof (EXPR)) #endif /* Test a <stdbit.h> function / macro. For each function family, and each input type, we test both with and without macros from the header being used, both with a possibly wider argument being passed (that must be truncated by the prototype) and with the argument truncated in the caller, as well as testing the type-generic macro (with the argument truncated in the caller). Also test that the results have the correct type; also test truncation from floating-point arguments (valid for functions, including with macro expansion, because the prototype must implicitly convert to integer type; not valid for the type-generic macros). Also test that the argument is evaluated exactly once. Also test the macros are usable (e.g. in typeof) at top level (GCC doesn't allow ({}) outside functions: bug 93239). */ #define TEST_STDBIT_T(FUNC, X, RES, TTYPE, TYPE, SUFFIX) \ do \ { \ TEST_COMPARE (FUNC ## SUFFIX (X), (RES)); \ TEST_TYPE (FUNC ## SUFFIX (X), TTYPE); \ TEST_COMPARE ((FUNC ## SUFFIX) (X), (RES)); \ TEST_TYPE ((FUNC ## SUFFIX) (X), TTYPE); \ TEST_COMPARE (FUNC ## SUFFIX ((TYPE) (X)), (RES)); \ TEST_TYPE (FUNC ## SUFFIX ((TYPE) (X)), TTYPE); \ TEST_COMPARE ((FUNC ## SUFFIX) ((TYPE) (X)), (RES)); \ TEST_TYPE ((FUNC ## SUFFIX) ((TYPE) (X)), TTYPE); \ TEST_COMPARE (FUNC ((TYPE) (X)), (RES)); \ TEST_TYPE (FUNC ((TYPE) (X)), TTYPE); \ if (sizeof (TYPE) <= 2) \ { \ TEST_COMPARE (FUNC ## SUFFIX ((float) (TYPE) (X)), (RES)); \ TEST_TYPE (FUNC ## SUFFIX ((float) (TYPE) (X)), TTYPE); \ TEST_COMPARE ((FUNC ## SUFFIX) ((float) (TYPE) (X)), (RES)); \ TEST_TYPE ((FUNC ## SUFFIX) ((float) (TYPE) (X)), TTYPE); \ } \ if (sizeof (TYPE) <= 4) \ { \ TEST_COMPARE (FUNC ## SUFFIX ((double) (TYPE) (X)), (RES)); \ TEST_TYPE (FUNC ## SUFFIX ((double) (TYPE) (X)), TTYPE); \ TEST_COMPARE ((FUNC ## SUFFIX) ((double) (TYPE) (X)), (RES)); \ TEST_TYPE ((FUNC ## SUFFIX) ((double) (TYPE) (X)), TTYPE); \ TEST_COMPARE (FUNC ## SUFFIX ((long double) (TYPE) (X)), (RES)); \ TEST_TYPE (FUNC ## SUFFIX ((long double) (TYPE) (X)), TTYPE); \ TEST_COMPARE ((FUNC ## SUFFIX) ((long double) (TYPE) (X)), (RES)); \ TEST_TYPE ((FUNC ## SUFFIX) ((long double) (TYPE) (X)), TTYPE); \ } \ TYPE xt = (X); \ TEST_COMPARE (FUNC ## SUFFIX (xt++), (RES)); \ TEST_COMPARE (xt, (TYPE) ((X) + 1)); \ xt = (X); \ TEST_COMPARE (FUNC (xt++), (RES)); \ TEST_COMPARE (xt, (TYPE) ((X) + 1)); \ } \ while (0) #define TEST_STDBIT_UI(FUNC, INPUTS) \ do \ for (int i = 0; i < array_length (INPUTS); i++) \ { \ uint64_t x = (INPUTS)[i].x; \ unsigned int res_8 = (INPUTS)[i].res_8; \ unsigned int res_16 = (INPUTS)[i].res_16; \ unsigned int res_32 = (INPUTS)[i].res_32; \ unsigned int res_64 = (INPUTS)[i].res_64; \ unsigned int res_l = (sizeof (long int) == 4 \ ? res_32 : res_64); \ TEST_STDBIT_T (FUNC, x, res_8, unsigned int, \ unsigned char, _uc); \ TEST_STDBIT_T (FUNC, x, res_16, unsigned int, \ unsigned short, _us); \ TEST_STDBIT_T (FUNC, x, res_32, unsigned int, \ unsigned int, _ui); \ TEST_STDBIT_T (FUNC, x, res_l, unsigned int, \ unsigned long int, _ul); \ TEST_STDBIT_T (FUNC, x, res_64, unsigned int, \ unsigned long long int, _ull); \ } \ while (0) #define TEST_STDBIT_BOOL(FUNC, INPUTS) \ do \ for (int i = 0; i < array_length (INPUTS); i++) \ { \ uint64_t x = (INPUTS)[i].x; \ bool res_8 = (INPUTS)[i].res_8; \ bool res_16 = (INPUTS)[i].res_16; \ bool res_32 = (INPUTS)[i].res_32; \ bool res_64 = (INPUTS)[i].res_64; \ bool res_l = (sizeof (long int) == 4 ? res_32 : res_64); \ TEST_STDBIT_T (FUNC, x, res_8, _Bool, unsigned char, _uc); \ TEST_STDBIT_T (FUNC, x, res_16, _Bool, unsigned short, _us); \ TEST_STDBIT_T (FUNC, x, res_32, _Bool, unsigned int, _ui); \ TEST_STDBIT_T (FUNC, x, res_l, _Bool, unsigned long int, _ul); \ TEST_STDBIT_T (FUNC, x, res_64, _Bool, \ unsigned long long int, _ull); \ } \ while (0) #define TEST_STDBIT_SAME(FUNC, INPUTS) \ do \ for (int i = 0; i < array_length (INPUTS); i++) \ { \ uint64_t x = (INPUTS)[i].x; \ unsigned char res_8 = (INPUTS)[i].res_8; \ unsigned short res_16 = (INPUTS)[i].res_16; \ unsigned int res_32 = (INPUTS)[i].res_32; \ unsigned long long int res_64 = (INPUTS)[i].res_64; \ unsigned long int res_l = (sizeof (long int) == 4 \ ? res_32 : res_64); \ TEST_STDBIT_T (FUNC, x, res_8, unsigned char, \ unsigned char, _uc); \ TEST_STDBIT_T (FUNC, x, res_16, unsigned short, \ unsigned short, _us); \ TEST_STDBIT_T (FUNC, x, res_32, unsigned int, \ unsigned int, _ui); \ TEST_STDBIT_T (FUNC, x, res_l, unsigned long int, \ unsigned long int, _ul); \ TEST_STDBIT_T (FUNC, x, res_64, unsigned long long int, \ unsigned long long int, _ull); \ } \ while (0) #define TEST_STDBIT_UI_TOPLEVEL(FUNC) \ TEST_TYPE (FUNC ## _uc ((unsigned char) 0), unsigned int); \ TEST_TYPE (FUNC ((unsigned char) 0), unsigned int); \ TEST_TYPE (FUNC ## _us ((unsigned short) 0), unsigned int); \ TEST_TYPE (FUNC ((unsigned short) 0), unsigned int); \ TEST_TYPE (FUNC ## _ui (0U), unsigned int); \ TEST_TYPE (FUNC (0U), unsigned int); \ TEST_TYPE (FUNC ## _ul (0UL), unsigned int); \ TEST_TYPE (FUNC (0UL), unsigned int); \ TEST_TYPE (FUNC ## _ull (0ULL), unsigned int); \ TEST_TYPE (FUNC (0ULL), unsigned int) #define TEST_STDBIT_BOOL_TOPLEVEL(FUNC) \ TEST_TYPE (FUNC ## _uc ((unsigned char) 0), _Bool); \ TEST_TYPE (FUNC ((unsigned char) 0), _Bool); \ TEST_TYPE (FUNC ## _us ((unsigned short) 0), _Bool); \ TEST_TYPE (FUNC ((unsigned short) 0), _Bool); \ TEST_TYPE (FUNC ## _ui (0U), _Bool); \ TEST_TYPE (FUNC (0U), _Bool); \ TEST_TYPE (FUNC ## _ul (0UL), _Bool); \ TEST_TYPE (FUNC (0UL), _Bool); \ TEST_TYPE (FUNC ## _ull (0ULL), _Bool); \ TEST_TYPE (FUNC (0ULL), _Bool) #define TEST_STDBIT_SAME_TOPLEVEL(FUNC) \ TEST_TYPE (FUNC ## _uc ((unsigned char) 0), unsigned char); \ TEST_TYPE (FUNC ((unsigned char) 0), unsigned char); \ TEST_TYPE (FUNC ## _us ((unsigned short) 0), unsigned short); \ TEST_TYPE (FUNC ((unsigned short) 0), unsigned short); \ TEST_TYPE (FUNC ## _ui (0U), unsigned int); \ TEST_TYPE (FUNC (0U), unsigned int); \ TEST_TYPE (FUNC ## _ul (0UL), unsigned long int); \ TEST_TYPE (FUNC (0UL), unsigned long int); \ TEST_TYPE (FUNC ## _ull (0ULL), unsigned long long int); \ TEST_TYPE (FUNC (0ULL), unsigned long long int) #endif