133bc64507
This provides better error messages that just an assertion failure and also makes it easier to mark individual tests as XFAIL. It was also helpful when coming up with D28786 and D28787. Differential Revision: https://reviews.freebsd.org/D28798
124 lines
3.8 KiB
C
124 lines
3.8 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 <sys/param.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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#include "test-utils.h"
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static 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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unsigned i;
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snprintf(nan_str, sizeof(nan_str), "nan(%s)", nan_format);
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for (i = 0; i < nitems(ad); 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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ATF_REQUIRE(isnan(af[0]));
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af[1] = strtof(nan_str, &end);
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ATF_REQUIRE(end == nan_str + strlen(nan_str));
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ATF_REQUIRE(sscanf(nan_str, "%e", &af[2]) == 1);
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ATF_REQUIRE(memcmp(&af[0], &af[1], sizeof(float)) == 0);
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ATF_REQUIRE(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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ATF_REQUIRE(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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ATF_REQUIRE(isnan(ad[0]));
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ad[1] = strtod(nan_str, &end);
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ATF_REQUIRE(end == nan_str + strlen(nan_str));
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ATF_REQUIRE(sscanf(nan_str, "%le", &ad[2]) == 1);
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ATF_REQUIRE(memcmp(&ad[0], &ad[1], sizeof(double)) == 0);
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ATF_REQUIRE(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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ATF_REQUIRE(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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ATF_REQUIRE(isnan(ald[0]));
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ald[1] = strtold(nan_str, &end);
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ATF_REQUIRE(end == nan_str + strlen(nan_str));
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ATF_REQUIRE(sscanf(nan_str, "%Le", &ald[2]) == 1);
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ATF_REQUIRE(memcmp(&ald[0], &ald[1], sizeof(long double)) == 0);
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ATF_REQUIRE(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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ATF_REQUIRE(memcmp(&ald[2], &ald[3], sizeof(long double)) == 0);
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}
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}
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ATF_TC_WITHOUT_HEAD(nan);
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ATF_TC_BODY(nan, tc)
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{
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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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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, nan);
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return (atf_no_error());
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}
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