diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-26 16:47:03 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-27 10:22:26 -0300 |
| commit | 3dd8f507d8f9a170251ac3c87103d71fe2b54373 (patch) | |
| tree | ec3541ed5e507d6c331e95b3265d6456650c9f32 | |
| parent | b31765c77239a3c43558892e51654396f93e6828 (diff) | |
| download | glibc-3dd8f507d8f9a170251ac3c87103d71fe2b54373.tar.gz glibc-3dd8f507d8f9a170251ac3c87103d71fe2b54373.tar.xz glibc-3dd8f507d8f9a170251ac3c87103d71fe2b54373.zip | |
math: Add test to check if trunc raise inexact floating-point exception
It is not allowed anymore on ISO C23.
| -rw-r--r-- | math/Makefile | 3 | ||||
| -rw-r--r-- | math/test-trunc-except-2.c | 67 |
2 files changed, 69 insertions, 1 deletions
diff --git a/math/Makefile b/math/Makefile index c87f9e83d1..85a78f6b48 100644 --- a/math/Makefile +++ b/math/Makefile @@ -241,7 +241,7 @@ tests = test-matherr-3 test-fenv basic-test \ test-fenv-tls test-fenv-preserve test-fenv-return \ test-nearbyint-except test-fenv-clear \ test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \ - test-ceil-except-2 test-floor-except-2 \ + test-ceil-except-2 test-floor-except-2 test-trunc-except-2 \ test-signgam-uint test-signgam-uint-init test-signgam-ullong \ test-signgam-ullong-init test-nan-overflow test-nan-payload \ test-fexcept test-fexcept-traps test-fesetexcept \ @@ -466,6 +466,7 @@ CFLAGS-test-nan-const.c += -fno-builtin CFLAGS-test-ceil-except-2.c += -fno-builtin CFLAGS-test-floor-except-2.c += -fno-builtin +CFLAGS-test-trunc-except-2.c += -fno-builtin include ../Rules diff --git a/math/test-trunc-except-2.c b/math/test-trunc-except-2.c new file mode 100644 index 0000000000..29716efc0b --- /dev/null +++ b/math/test-trunc-except-2.c @@ -0,0 +1,67 @@ +/* Test trunc functions do not disable exception traps. + Copyright (C) 2023 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/>. */ + +#include <fenv.h> +#include <math.h> +#include <stdio.h> + +#ifndef FE_INEXACT +# define FE_INEXACT 0 +#endif + +#define TEST_FUNC(NAME, FLOAT, SUFFIX) \ +static int \ +NAME (void) \ +{ \ + int result = 0; \ + volatile FLOAT a, b __attribute__ ((unused)); \ + a = 1.5; \ + /* trunc must work when traps on "inexact" are enabled. */ \ + b = trunc ## SUFFIX (a); \ + /* And it must have left those traps enabled. */ \ + if (fegetexcept () == FE_INEXACT) \ + puts ("PASS: " #FLOAT); \ + else \ + { \ + puts ("FAIL: " #FLOAT); \ + result = 1; \ + } \ + return result; \ +} + +TEST_FUNC (float_test, float, f) +TEST_FUNC (double_test, double, ) +TEST_FUNC (ldouble_test, long double, l) + +static int +do_test (void) +{ + if (feenableexcept (FE_INEXACT) == -1) + { + puts ("enabling FE_INEXACT traps failed, cannot test"); + return 77; + } + int result = float_test (); + feenableexcept (FE_INEXACT); + result |= double_test (); + feenableexcept (FE_INEXACT); + result |= ldouble_test (); + return result; +} + +#include <support/test-driver.c> |