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glibc/math/test-nan-payload.c
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/* Test nan functions payload handling (bug 16961). | |
Copyright (C) 2015-2016 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 <float.h> | |
#include <math.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
/* Avoid built-in functions. */ | |
#define WRAP_NAN(FUNC, STR) \ | |
({ const char *volatile wns = (STR); FUNC (wns); }) | |
#define WRAP_STRTO(FUNC, STR) \ | |
({ const char *volatile wss = (STR); FUNC (wss, NULL); }) | |
#define CHECK_IS_NAN(TYPE, A) \ | |
do \ | |
{ \ | |
if (isnan (A)) \ | |
puts ("PASS: " #TYPE " " #A); \ | |
else \ | |
{ \ | |
puts ("FAIL: " #TYPE " " #A); \ | |
result = 1; \ | |
} \ | |
} \ | |
while (0) | |
#define CHECK_SAME_NAN(TYPE, A, B) \ | |
do \ | |
{ \ | |
if (memcmp (&(A), &(B), sizeof (A)) == 0) \ | |
puts ("PASS: " #TYPE " " #A " = " #B); \ | |
else \ | |
{ \ | |
puts ("FAIL: " #TYPE " " #A " = " #B); \ | |
result = 1; \ | |
} \ | |
} \ | |
while (0) | |
#define CHECK_DIFF_NAN(TYPE, A, B) \ | |
do \ | |
{ \ | |
if (memcmp (&(A), &(B), sizeof (A)) != 0) \ | |
puts ("PASS: " #TYPE " " #A " != " #B); \ | |
else \ | |
{ \ | |
puts ("FAIL: " #TYPE " " #A " != " #B); \ | |
result = 1; \ | |
} \ | |
} \ | |
while (0) | |
/* Cannot test payloads by memcmp for formats where NaNs have padding | |
bits. */ | |
#define CAN_TEST_EQ(MANT_DIG) ((MANT_DIG) != 64 && (MANT_DIG) != 106) | |
#define RUN_TESTS(TYPE, SFUNC, FUNC, MANT_DIG) \ | |
do \ | |
{ \ | |
TYPE n123 = WRAP_NAN (FUNC, "123"); \ | |
CHECK_IS_NAN (TYPE, n123); \ | |
TYPE s123 = WRAP_STRTO (SFUNC, "NAN(123)"); \ | |
CHECK_IS_NAN (TYPE, s123); \ | |
TYPE n456 = WRAP_NAN (FUNC, "456"); \ | |
CHECK_IS_NAN (TYPE, n456); \ | |
TYPE s456 = WRAP_STRTO (SFUNC, "NAN(456)"); \ | |
CHECK_IS_NAN (TYPE, s456); \ | |
TYPE n123x = WRAP_NAN (FUNC, "123)"); \ | |
CHECK_IS_NAN (TYPE, n123x); \ | |
TYPE nemp = WRAP_NAN (FUNC, ""); \ | |
CHECK_IS_NAN (TYPE, nemp); \ | |
TYPE semp = WRAP_STRTO (SFUNC, "NAN()"); \ | |
CHECK_IS_NAN (TYPE, semp); \ | |
TYPE sx = WRAP_STRTO (SFUNC, "NAN"); \ | |
CHECK_IS_NAN (TYPE, sx); \ | |
if (CAN_TEST_EQ (MANT_DIG)) \ | |
CHECK_SAME_NAN (TYPE, n123, s123); \ | |
if (CAN_TEST_EQ (MANT_DIG)) \ | |
CHECK_SAME_NAN (TYPE, n456, s456); \ | |
if (CAN_TEST_EQ (MANT_DIG)) \ | |
CHECK_SAME_NAN (TYPE, nemp, semp); \ | |
if (CAN_TEST_EQ (MANT_DIG)) \ | |
CHECK_SAME_NAN (TYPE, n123x, sx); \ | |
CHECK_DIFF_NAN (TYPE, n123, n456); \ | |
CHECK_DIFF_NAN (TYPE, n123, nemp); \ | |
CHECK_DIFF_NAN (TYPE, n123, n123x); \ | |
CHECK_DIFF_NAN (TYPE, n456, nemp); \ | |
CHECK_DIFF_NAN (TYPE, n456, n123x); \ | |
} \ | |
while (0) | |
static int | |
do_test (void) | |
{ | |
int result = 0; | |
RUN_TESTS (float, strtof, nanf, FLT_MANT_DIG); | |
RUN_TESTS (double, strtod, nan, DBL_MANT_DIG); | |
#ifndef NO_LONG_DOUBLE | |
RUN_TESTS (long double, strtold, nanl, LDBL_MANT_DIG); | |
#endif | |
return result; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |