mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*-
|
|
* Copyright (C) 2007 David Schultz <das@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Test for nan(), nanf(), and nanl(). We also test that strtod("nan(...)")
|
|
* and sscanf("nan(...)", ...) work identically.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <assert.h>
|
|
#include <fenv.h>
|
|
#include <float.h>
|
|
#include <locale.h>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
void
|
|
testnan(const char *nan_format)
|
|
{
|
|
char nan_str[128];
|
|
char *end;
|
|
long double ald[4];
|
|
double ad[4];
|
|
float af[4];
|
|
int i;
|
|
|
|
snprintf(nan_str, sizeof(nan_str), "nan(%s)", nan_format);
|
|
for (i = 0; i < 4; i++) {
|
|
/*
|
|
* x86 has an 80-bit long double stored in 96 bits,
|
|
* so we need to initialize the memory for the memcmp()
|
|
* checks below to work.
|
|
*/
|
|
bzero(&af[i], sizeof(float));
|
|
bzero(&ad[i], sizeof(double));
|
|
bzero(&ald[i], sizeof(long double));
|
|
|
|
}
|
|
|
|
af[0] = nanf(nan_format);
|
|
assert(isnan(af[0]));
|
|
af[1] = strtof(nan_str, &end);
|
|
assert(end == nan_str + strlen(nan_str));
|
|
assert(sscanf(nan_str, "%e", &af[2]) == 1);
|
|
assert(memcmp(&af[0], &af[1], sizeof(float)) == 0);
|
|
assert(memcmp(&af[1], &af[2], sizeof(float)) == 0);
|
|
if (*nan_format == '\0') {
|
|
/* nanf("") == strtof("nan") */
|
|
af[3] = strtof("nan", NULL);
|
|
assert(memcmp(&af[2], &af[3], sizeof(float)) == 0);
|
|
}
|
|
|
|
ad[0] = nan(nan_format);
|
|
assert(isnan(ad[0]));
|
|
ad[1] = strtod(nan_str, &end);
|
|
assert(end == nan_str + strlen(nan_str));
|
|
assert(sscanf(nan_str, "%le", &ad[2]) == 1);
|
|
assert(memcmp(&ad[0], &ad[1], sizeof(double)) == 0);
|
|
assert(memcmp(&ad[1], &ad[2], sizeof(double)) == 0);
|
|
if (*nan_format == '\0') {
|
|
/* nan("") == strtod("nan") */
|
|
ad[3] = strtod("nan", NULL);
|
|
assert(memcmp(&ad[2], &ad[3], sizeof(double)) == 0);
|
|
}
|
|
|
|
ald[0] = nanl(nan_format);
|
|
assert(isnan(ald[0]));
|
|
ald[1] = strtold(nan_str, &end);
|
|
assert(end == nan_str + strlen(nan_str));
|
|
assert(sscanf(nan_str, "%Le", &ald[2]) == 1);
|
|
assert(memcmp(&ald[0], &ald[1], sizeof(long double)) == 0);
|
|
assert(memcmp(&ald[1], &ald[2], sizeof(long double)) == 0);
|
|
if (*nan_format == '\0') {
|
|
/* nanl("") == strtold("nan") */
|
|
ald[3] = strtold("nan", NULL);
|
|
assert(memcmp(&ald[2], &ald[3], sizeof(long double)) == 0);
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
|
|
printf("1..1\n");
|
|
|
|
/* Die if a signalling NaN is returned */
|
|
feenableexcept(FE_INVALID);
|
|
|
|
testnan("0x1234");
|
|
testnan("");
|
|
|
|
printf("ok 1 - nan\n");
|
|
|
|
return (0);
|
|
}
|