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9e8c0381bb
On Alpha and IA-64, fexcept_t is unsigned long. But all the values fit within an int, so the cast is ok for printing. All other hosts use unsigned int or unsigned short already.
352 lines
9.2 KiB
C
352 lines
9.2 KiB
C
/* Test for fenv inline implementations.
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Copyright (C) 2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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#endif
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/* To make sure the fenv inline function are used. */
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#undef __NO_MATH_INLINES
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#include <fenv.h>
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#include <stdio.h>
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#include <math-tests.h>
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/*
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Since not all architectures might define all exceptions, we define
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a private set and map accordingly.
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*/
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#define NO_EXC 0
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#define INEXACT_EXC 0x1
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#define DIVBYZERO_EXC 0x2
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#define UNDERFLOW_EXC 0x04
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#define OVERFLOW_EXC 0x08
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#define INVALID_EXC 0x10
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#define ALL_EXC \
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(INEXACT_EXC | DIVBYZERO_EXC | UNDERFLOW_EXC | OVERFLOW_EXC | \
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INVALID_EXC)
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static int count_errors;
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#if FE_ALL_EXCEPT
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static void
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test_single_exception_fp_int (int exception,
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int exc_flag,
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int fe_flag,
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const char *flag_name)
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{
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if (exception & exc_flag)
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{
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if (fetestexcept (fe_flag))
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printf (" Pass: Exception \"%s\" is set\n", flag_name);
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else
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{
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printf (" Fail: Exception \"%s\" is not set\n", flag_name);
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++count_errors;
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}
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}
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else
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{
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if (fetestexcept (fe_flag))
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{
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printf (" Fail: Exception \"%s\" is set\n", flag_name);
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++count_errors;
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}
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else
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printf (" Pass: Exception \"%s\" is not set\n", flag_name);
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}
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}
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/* Test whether a given exception was raised. */
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static void
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test_single_exception_fp_double (int exception,
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int exc_flag,
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double fe_flag,
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const char *flag_name)
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{
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if (exception & exc_flag)
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{
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if (fetestexcept (fe_flag))
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printf (" Pass: Exception \"%s\" is set\n", flag_name);
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else
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{
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printf (" Fail: Exception \"%s\" is not set\n", flag_name);
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++count_errors;
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}
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}
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else
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{
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if (fetestexcept (fe_flag))
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{
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printf (" Fail: Exception \"%s\" is set\n", flag_name);
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++count_errors;
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}
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else
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printf (" Pass: Exception \"%s\" is not set\n", flag_name);
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}
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}
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#endif
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static void
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test_exceptions (const char *test_name, int exception)
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{
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printf ("Test: %s\n", test_name);
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#ifdef FE_DIVBYZERO
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test_single_exception_fp_double (exception, DIVBYZERO_EXC, FE_DIVBYZERO,
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"DIVBYZERO");
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#endif
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#ifdef FE_INVALID
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test_single_exception_fp_double (exception, INVALID_EXC, FE_INVALID,
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"INVALID");
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#endif
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#ifdef FE_INEXACT
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test_single_exception_fp_double (exception, INEXACT_EXC, FE_INEXACT,
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"INEXACT");
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#endif
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#ifdef FE_UNDERFLOW
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test_single_exception_fp_double (exception, UNDERFLOW_EXC, FE_UNDERFLOW,
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"UNDERFLOW");
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#endif
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#ifdef FE_OVERFLOW
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test_single_exception_fp_double (exception, OVERFLOW_EXC, FE_OVERFLOW,
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"OVERFLOW");
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#endif
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}
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static void
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test_exceptionflag (void)
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{
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printf ("Test: fegetexceptionflag (FE_ALL_EXCEPT)\n");
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#if FE_ALL_EXCEPT
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fexcept_t excepts;
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feclearexcept (FE_ALL_EXCEPT);
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feraiseexcept (FE_INVALID);
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fegetexceptflag (&excepts, FE_ALL_EXCEPT);
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feclearexcept (FE_ALL_EXCEPT);
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feraiseexcept (FE_OVERFLOW | FE_INEXACT);
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fesetexceptflag (&excepts, FE_ALL_EXCEPT);
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test_single_exception_fp_int (INVALID_EXC, INVALID_EXC, FE_INVALID,
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"INVALID (int)");
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test_single_exception_fp_int (INVALID_EXC, OVERFLOW_EXC, FE_OVERFLOW,
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"OVERFLOW (int)");
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test_single_exception_fp_int (INVALID_EXC, INEXACT_EXC, FE_INEXACT,
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"INEXACT (int)");
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/* Same test, but using double as argument */
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feclearexcept (FE_ALL_EXCEPT);
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feraiseexcept (FE_INVALID);
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fegetexceptflag (&excepts, (double)FE_ALL_EXCEPT);
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feclearexcept (FE_ALL_EXCEPT);
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feraiseexcept (FE_OVERFLOW | FE_INEXACT);
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fesetexceptflag (&excepts, (double)FE_ALL_EXCEPT);
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test_single_exception_fp_double (INVALID_EXC, INVALID_EXC, FE_INVALID,
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"INVALID (double)");
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test_single_exception_fp_double (INVALID_EXC, OVERFLOW_EXC, FE_OVERFLOW,
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"OVERFLOW (double)");
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test_single_exception_fp_double (INVALID_EXC, INEXACT_EXC, FE_INEXACT,
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"INEXACT (double)");
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#endif
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}
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static void
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test_fesetround (void)
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{
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#if defined FE_TONEAREST && defined FE_TOWARDZERO
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int res1;
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int res2;
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printf ("Tests for fesetround\n");
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/* The fesetround should not itself cause the test to fail, however it
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should either succeed for both 'int' and 'double' argument, or fail
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for both. */
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res1 = fesetround ((int) FE_TOWARDZERO);
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res2 = fesetround ((double) FE_TOWARDZERO);
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if (res1 != res2)
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{
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printf ("fesetround (FE_TOWARDZERO) failed: %d, %d\n", res1, res2);
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++count_errors;
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}
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res1 = fesetround ((int) FE_TONEAREST);
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res2 = fesetround ((double) FE_TONEAREST);
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if (res1 != res2)
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{
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printf ("fesetround (FE_TONEAREST) failed: %d, %d\n", res1, res2);
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++count_errors;
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}
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#endif
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}
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/* Tests for feenableexcept/fedisableexcept. */
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static void
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feenable_test (const char *flag_name, fexcept_t fe_exc)
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{
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#if FE_ALL_EXCEPT
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int fe_exci = fe_exc;
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double fe_excd = fe_exc;
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int excepts;
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/* First disable all exceptions. */
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if (fedisableexcept (FE_ALL_EXCEPT) == -1)
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{
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printf ("Test: fedisableexcept (FE_ALL_EXCEPT) failed\n");
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++count_errors;
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/* If this fails, the other tests don't make sense. */
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return;
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}
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/* Test for inline macros using integer argument. */
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excepts = feenableexcept (fe_exci);
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if (!EXCEPTION_ENABLE_SUPPORTED (fe_exci) && excepts == -1)
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{
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printf ("Test: not testing feenableexcept, it isn't implemented.\n");
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return;
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}
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if (excepts == -1)
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{
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printf ("Test: feenableexcept (%s) failed\n", flag_name);
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++count_errors;
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return;
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}
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if (excepts != 0)
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{
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printf ("Test: feenableexcept (%s) failed, return should be 0, is %x\n",
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flag_name, excepts);
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++count_errors;
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}
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/* And now disable the exception again. */
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excepts = fedisableexcept (fe_exc);
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if (excepts == -1)
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{
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printf ("Test: fedisableexcept (%s) failed\n", flag_name);
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++count_errors;
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return;
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}
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if (excepts != fe_exc)
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{
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printf ("Test: fedisableexcept (%s) failed, return should be 0x%x, is 0x%x\n",
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flag_name, (unsigned int)fe_exc, excepts);
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++count_errors;
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}
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/* Test for inline macros using double argument. */
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excepts = feenableexcept (fe_excd);
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if (!EXCEPTION_ENABLE_SUPPORTED (fe_excd) && excepts == -1)
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{
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printf ("Test: not testing feenableexcept, it isn't implemented.\n");
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return;
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}
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if (excepts == -1)
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{
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printf ("Test: feenableexcept (%s) failed\n", flag_name);
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++count_errors;
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return;
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}
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if (excepts != 0)
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{
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printf ("Test: feenableexcept (%s) failed, return should be 0, is %x\n",
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flag_name, excepts);
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++count_errors;
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}
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/* And now disable the exception again. */
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excepts = fedisableexcept (fe_exc);
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if (excepts == -1)
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{
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printf ("Test: fedisableexcept (%s) failed\n", flag_name);
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++count_errors;
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return;
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}
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if (excepts != fe_exc)
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{
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printf ("Test: fedisableexcept (%s) failed, return should be 0x%x, is 0x%x\n",
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flag_name, (unsigned int)fe_exc, excepts);
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++count_errors;
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}
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#endif
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}
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static void
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test_feenabledisable (void)
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{
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printf ("Tests for feenableexcepts/fedisableexcept\n");
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/* We might have some exceptions still set. */
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feclearexcept (FE_ALL_EXCEPT);
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#ifdef FE_DIVBYZERO
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feenable_test ("FE_DIVBYZERO", FE_DIVBYZERO);
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#endif
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#ifdef FE_INVALID
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feenable_test ("FE_INVALID", FE_INVALID);
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#endif
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#ifdef FE_INEXACT
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feenable_test ("FE_INEXACT", FE_INEXACT);
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#endif
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#ifdef FE_UNDERFLOW
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feenable_test ("FE_UNDERFLOW", FE_UNDERFLOW);
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#endif
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#ifdef FE_OVERFLOW
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feenable_test ("FE_OVERFLOW", FE_OVERFLOW);
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#endif
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fesetenv (FE_DFL_ENV);
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}
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static int
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do_test (void)
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{
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/* clear all exceptions and test if all are cleared */
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feclearexcept (FE_ALL_EXCEPT);
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test_exceptions ("feclearexcept (FE_ALL_EXCEPT) clears all exceptions",
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NO_EXC);
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/* raise all exceptions and test if all are raised */
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feraiseexcept (FE_ALL_EXCEPT);
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test_exceptions ("feraiseexcept (FE_ALL_EXCEPT) raises all exceptions",
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ALL_EXC);
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/* Same test, but using double as argument */
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feclearexcept ((double)FE_ALL_EXCEPT);
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test_exceptions ("feclearexcept ((double)FE_ALL_EXCEPT) clears all exceptions",
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NO_EXC);
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feraiseexcept ((double)FE_ALL_EXCEPT);
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test_exceptions ("feraiseexcept ((double)FE_ALL_EXCEPT) raises all exceptions",
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ALL_EXC);
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test_exceptionflag ();
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test_fesetround ();
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test_feenabledisable ();
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return count_errors;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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