3d03354a92
into the FreeBSD test suite There's no functional change with these testcases; they're purposely being left in TAP format for the time being Other testcases which crash on amd64/i386 as-is have not been integrated yet (they need to be retested on a later version of CURRENT, as I haven't used i386 in some time) MFC after: 3 weeks Sponsored by: EMC / Isilon Storage Division
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*-
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* Copyright (C) 2007 David Schultz <das@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Test for nan(), nanf(), and nanl(). We also test that strtod("nan(...)")
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* and sscanf("nan(...)", ...) work identically.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <assert.h>
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#include <fenv.h>
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#include <float.h>
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#include <locale.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void
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testnan(const char *nan_format)
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{
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char nan_str[128];
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char *end;
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long double ald[4];
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double ad[4];
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float af[4];
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int i;
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snprintf(nan_str, sizeof(nan_str), "nan(%s)", nan_format);
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for (i = 0; i < 4; i++) {
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/*
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* x86 has an 80-bit long double stored in 96 bits,
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* so we need to initialize the memory for the memcmp()
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* checks below to work.
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*/
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bzero(&af[i], sizeof(float));
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bzero(&ad[i], sizeof(double));
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bzero(&ald[i], sizeof(long double));
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}
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af[0] = nanf(nan_format);
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assert(isnan(af[0]));
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af[1] = strtof(nan_str, &end);
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assert(end == nan_str + strlen(nan_str));
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assert(sscanf(nan_str, "%e", &af[2]) == 1);
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assert(memcmp(&af[0], &af[1], sizeof(float)) == 0);
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assert(memcmp(&af[1], &af[2], sizeof(float)) == 0);
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if (*nan_format == '\0') {
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/* nanf("") == strtof("nan") */
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af[3] = strtof("nan", NULL);
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assert(memcmp(&af[2], &af[3], sizeof(float)) == 0);
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}
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ad[0] = nan(nan_format);
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assert(isnan(ad[0]));
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ad[1] = strtod(nan_str, &end);
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assert(end == nan_str + strlen(nan_str));
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assert(sscanf(nan_str, "%le", &ad[2]) == 1);
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assert(memcmp(&ad[0], &ad[1], sizeof(double)) == 0);
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assert(memcmp(&ad[1], &ad[2], sizeof(double)) == 0);
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if (*nan_format == '\0') {
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/* nan("") == strtod("nan") */
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ad[3] = strtod("nan", NULL);
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assert(memcmp(&ad[2], &ad[3], sizeof(double)) == 0);
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}
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ald[0] = nanl(nan_format);
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assert(isnan(ald[0]));
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ald[1] = strtold(nan_str, &end);
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assert(end == nan_str + strlen(nan_str));
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assert(sscanf(nan_str, "%Le", &ald[2]) == 1);
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assert(memcmp(&ald[0], &ald[1], sizeof(long double)) == 0);
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assert(memcmp(&ald[1], &ald[2], sizeof(long double)) == 0);
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if (*nan_format == '\0') {
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/* nanl("") == strtold("nan") */
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ald[3] = strtold("nan", NULL);
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assert(memcmp(&ald[2], &ald[3], sizeof(long double)) == 0);
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}
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}
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int
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main(int argc, char *argv[])
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{
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printf("1..1\n");
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/* Die if a signalling NaN is returned */
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feenableexcept(FE_INVALID);
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testnan("0x1234");
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testnan("");
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printf("ok 1 - nan\n");
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return (0);
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}
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