| /* Test femode_t functions. |
| Copyright (C) 2016-2018 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <fenv.h> |
| #include <stdio.h> |
| #include <math-tests.h> |
| |
| static int |
| test_mmee (int mode1, int mode2, int exc1, int exc2) |
| { |
| int result = 0; |
| printf ("testing %x %x %x %x\n", (unsigned int) mode1, (unsigned int) mode2, |
| (unsigned int) exc1, (unsigned int) exc2); |
| |
| feclearexcept (FE_ALL_EXCEPT); |
| int ret = fesetround (mode1); |
| if (ret != 0) |
| { |
| if (ROUNDING_TESTS (float, mode1)) |
| { |
| puts ("first fesetround failed unexpectedly"); |
| result = 1; |
| } |
| else |
| puts ("first fesetround failed, cannot test"); |
| return result; |
| } |
| ret = fesetexcept (exc1); |
| if (ret != 0) |
| { |
| if (EXCEPTION_TESTS (float) || exc1 == 0) |
| { |
| puts ("first fesetexcept failed unexpectedly"); |
| result = 1; |
| } |
| else |
| puts ("first fesetexcept failed, cannot test"); |
| return result; |
| } |
| femode_t saved; |
| ret = fegetmode (&saved); |
| if (ret != 0) |
| { |
| puts ("fegetmode failed"); |
| result = 1; |
| return result; |
| } |
| feclearexcept (FE_ALL_EXCEPT); |
| ret = fesetround (mode2); |
| if (ret != 0) |
| { |
| if (ROUNDING_TESTS (float, mode2)) |
| { |
| puts ("second fesetround failed unexpectedly"); |
| result = 1; |
| } |
| else |
| puts ("second fesetround failed, cannot test"); |
| return result; |
| } |
| ret = fesetexcept (exc2); |
| if (ret != 0) |
| { |
| if (EXCEPTION_TESTS (float) || exc2 == 0) |
| { |
| puts ("second fesetexcept failed unexpectedly"); |
| result = 1; |
| } |
| else |
| puts ("second fesetexcept failed, cannot test"); |
| return result; |
| } |
| ret = fesetmode (&saved); |
| if (ret != 0) |
| { |
| puts ("fesetmode failed"); |
| result = 1; |
| return result; |
| } |
| /* Verify that the rounding mode was restored but the exception |
| flags remain unchanged. */ |
| ret = fegetround (); |
| if (ret != mode1) |
| { |
| printf ("restored rounding mode %x not %x\n", (unsigned int) ret, |
| (unsigned int) mode1); |
| result = 1; |
| } |
| ret = fetestexcept (FE_ALL_EXCEPT); |
| if (ret != exc2) |
| { |
| printf ("exceptions %x not %x\n", (unsigned int) ret, |
| (unsigned int) exc2); |
| result = 1; |
| } |
| /* Likewise, with default modes. */ |
| ret = fesetmode (FE_DFL_MODE); |
| if (ret != 0) |
| { |
| puts ("fesetmode (FE_DFL_MODE) failed"); |
| result = 1; |
| return result; |
| } |
| ret = fegetround (); |
| if (ret != FE_TONEAREST) |
| { |
| printf ("FE_DFL_MODE rounding mode %x not %x\n", (unsigned int) ret, |
| (unsigned int) FE_TONEAREST); |
| result = 1; |
| } |
| ret = fetestexcept (FE_ALL_EXCEPT); |
| if (ret != exc2) |
| { |
| printf ("FE_DFL_MODE exceptions %x not %x\n", (unsigned int) ret, |
| (unsigned int) exc2); |
| result = 1; |
| } |
| return result; |
| } |
| |
| static int |
| test_mme (int mode1, int mode2, int exc1) |
| { |
| int result = 0; |
| |
| result |= test_mmee (mode1, mode2, exc1, 0); |
| result |= test_mmee (mode1, mode2, exc1, FE_ALL_EXCEPT); |
| #ifdef FE_DIVBYZERO |
| result |= test_mmee (mode1, mode2, exc1, FE_DIVBYZERO); |
| #endif |
| #ifdef FE_INEXACT |
| result |= test_mmee (mode1, mode2, exc1, FE_INEXACT); |
| #endif |
| #ifdef FE_INVALID |
| result |= test_mmee (mode1, mode2, exc1, FE_INVALID); |
| #endif |
| #ifdef FE_OVERFLOW |
| result |= test_mmee (mode1, mode2, exc1, FE_OVERFLOW); |
| #endif |
| #ifdef FE_UNDERFLOW |
| result |= test_mmee (mode1, mode2, exc1, FE_UNDERFLOW); |
| #endif |
| |
| return result; |
| } |
| |
| static int |
| test_mm (int mode1, int mode2) |
| { |
| int result = 0; |
| |
| result |= test_mme (mode1, mode2, 0); |
| result |= test_mme (mode1, mode2, FE_ALL_EXCEPT); |
| #ifdef FE_DIVBYZERO |
| result |= test_mme (mode1, mode2, FE_DIVBYZERO); |
| #endif |
| #ifdef FE_INEXACT |
| result |= test_mme (mode1, mode2, FE_INEXACT); |
| #endif |
| #ifdef FE_INVALID |
| result |= test_mme (mode1, mode2, FE_INVALID); |
| #endif |
| #ifdef FE_OVERFLOW |
| result |= test_mme (mode1, mode2, FE_OVERFLOW); |
| #endif |
| #ifdef FE_UNDERFLOW |
| result |= test_mme (mode1, mode2, FE_UNDERFLOW); |
| #endif |
| |
| return result; |
| } |
| |
| static int |
| test_m (int mode1) |
| { |
| int result = 0; |
| |
| #ifdef FE_DOWNWARD |
| result |= test_mm (mode1, FE_DOWNWARD); |
| #endif |
| #ifdef FE_TONEAREST |
| result |= test_mm (mode1, FE_TONEAREST); |
| #endif |
| #ifdef FE_TOWARDZERO |
| result |= test_mm (mode1, FE_TOWARDZERO); |
| #endif |
| #ifdef FE_UPWARD |
| result |= test_mm (mode1, FE_UPWARD); |
| #endif |
| |
| return result; |
| } |
| |
| static int |
| do_test (void) |
| { |
| int result = 0; |
| |
| #ifdef FE_DOWNWARD |
| result |= test_m (FE_DOWNWARD); |
| #endif |
| #ifdef FE_TONEAREST |
| result |= test_m (FE_TONEAREST); |
| #endif |
| #ifdef FE_TOWARDZERO |
| result |= test_m (FE_TOWARDZERO); |
| #endif |
| #ifdef FE_UPWARD |
| result |= test_m (FE_UPWARD); |
| #endif |
| |
| return result; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |