minix/tests/lib/libc/stdlib/t_strtod.c
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

335 lines
7.8 KiB
C

/* $NetBSD: t_strtod.c,v 1.31 2012/09/26 07:24:38 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/* Public domain, Otto Moerbeek <otto@drijf.net>, 2006. */
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_strtod.c,v 1.31 2012/09/26 07:24:38 jruoho Exp $");
#include <errno.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atf-c.h>
#include <atf-c/config.h>
#if defined(__i386__) || defined(__amd64__) || defined(__sparc__)
#include <fenv.h>
#endif
#if !defined(__vax__)
static const char * const inf_strings[] =
{ "Inf", "INF", "-Inf", "-INF", "Infinity", "+Infinity",
"INFINITY", "-INFINITY", "InFiNiTy", "+InFiNiTy" };
const char *nan_string = "NaN(x)y";
#endif
ATF_TC(strtod_basic);
ATF_TC_HEAD(strtod_basic, tc)
{
atf_tc_set_md_var(tc, "descr", "A basic test of strtod(3)");
}
ATF_TC_BODY(strtod_basic, tc)
{
static const size_t n = 1024 * 1000;
for (size_t i = 1; i < n; i = i + 1024) {
char buf[512];
(void)snprintf(buf, sizeof(buf), "%zu.%zu", i, i + 1);
errno = 0;
double d = strtod(buf, NULL);
ATF_REQUIRE(d > 0.0);
ATF_REQUIRE(errno == 0);
}
}
ATF_TC(strtod_hex);
ATF_TC_HEAD(strtod_hex, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtod(3) with hexadecimals");
}
#ifdef __vax__
#define SMALL_NUM 1.0e-38
#else
#define SMALL_NUM 1.0e-40
#endif
ATF_TC_BODY(strtod_hex, tc)
{
const char *str;
char *end;
volatile double d;
str = "-0x0";
d = strtod(str, &end); /* -0.0 */
ATF_REQUIRE(end == str + 4);
ATF_REQUIRE(signbit(d) != 0);
ATF_REQUIRE(fabs(d) < SMALL_NUM);
str = "-0x";
d = strtod(str, &end); /* -0.0 */
ATF_REQUIRE(end == str + 2);
ATF_REQUIRE(signbit(d) != 0);
ATF_REQUIRE(fabs(d) < SMALL_NUM);
}
ATF_TC(strtod_inf);
ATF_TC_HEAD(strtod_inf, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtod(3) with INF (PR lib/33262)");
}
ATF_TC_BODY(strtod_inf, tc)
{
#ifndef __vax__
for (size_t i = 0; i < __arraycount(inf_strings); i++) {
volatile double d = strtod(inf_strings[i], NULL);
ATF_REQUIRE(isinf(d) != 0);
}
#else
atf_tc_skip("vax not supported");
#endif
}
ATF_TC(strtof_inf);
ATF_TC_HEAD(strtof_inf, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtof(3) with INF (PR lib/33262)");
}
ATF_TC_BODY(strtof_inf, tc)
{
#ifndef __vax__
for (size_t i = 0; i < __arraycount(inf_strings); i++) {
volatile float f = strtof(inf_strings[i], NULL);
ATF_REQUIRE(isinf(f) != 0);
}
#else
atf_tc_skip("vax not supported");
#endif
}
ATF_TC(strtold_inf);
ATF_TC_HEAD(strtold_inf, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtold(3) with INF (PR lib/33262)");
}
ATF_TC_BODY(strtold_inf, tc)
{
#ifndef __vax__
# ifdef __HAVE_LONG_DOUBLE
for (size_t i = 0; i < __arraycount(inf_strings); i++) {
volatile long double ld = strtold(inf_strings[i], NULL);
ATF_REQUIRE(isinf(ld) != 0);
}
# else
atf_tc_skip("Requires long double support");
# endif
#else
atf_tc_skip("vax not supported");
#endif
}
ATF_TC(strtod_nan);
ATF_TC_HEAD(strtod_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtod(3) with NaN");
}
ATF_TC_BODY(strtod_nan, tc)
{
#ifndef __vax__
char *end;
volatile double d = strtod(nan_string, &end);
ATF_REQUIRE(isnan(d) != 0);
ATF_REQUIRE(strcmp(end, "y") == 0);
#else
atf_tc_skip("vax not supported");
#endif
}
ATF_TC(strtof_nan);
ATF_TC_HEAD(strtof_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtof(3) with NaN");
}
ATF_TC_BODY(strtof_nan, tc)
{
#ifndef __vax__
char *end;
volatile float f = strtof(nan_string, &end);
ATF_REQUIRE(isnanf(f) != 0);
ATF_REQUIRE(strcmp(end, "y") == 0);
#else
atf_tc_skip("vax not supported");
#endif
}
ATF_TC(strtold_nan);
ATF_TC_HEAD(strtold_nan, tc)
{
atf_tc_set_md_var(tc, "descr", "A strtold(3) with NaN (PR lib/45020)");
}
ATF_TC_BODY(strtold_nan, tc)
{
#ifndef __vax__
# ifdef __HAVE_LONG_DOUBLE
char *end;
volatile long double ld = strtold(nan_string, &end);
ATF_REQUIRE(isnan(ld) != 0);
ATF_REQUIRE(__isnanl(ld) != 0);
ATF_REQUIRE(strcmp(end, "y") == 0);
# else
atf_tc_skip("Requires long double support");
# endif
#else
atf_tc_skip("vax not supported");
#endif
}
ATF_TC(strtod_round);
ATF_TC_HEAD(strtod_round, tc)
{
atf_tc_set_md_var(tc, "descr", "Test rouding in strtod(3)");
}
ATF_TC_BODY(strtod_round, tc)
{
#if defined(__i386__) || defined(__amd64__) || defined(__sparc__)
/*
* Test that strtod(3) honors the current rounding mode.
* The used value is somewhere near 1 + DBL_EPSILON + FLT_EPSILON.
*/
const char *val =
"1.00000011920928977282585492503130808472633361816406";
(void)fesetround(FE_UPWARD);
volatile double d1 = strtod(val, NULL);
(void)fesetround(FE_DOWNWARD);
volatile double d2 = strtod(val, NULL);
if (fabs(d1 - d2) > 0.0)
return;
else {
atf_tc_expect_fail("PR misc/44767");
atf_tc_fail("strtod(3) did not honor fesetround(3)");
}
#else
atf_tc_skip("Requires one of i386, amd64 or sparc");
#endif
}
ATF_TC(strtod_underflow);
ATF_TC_HEAD(strtod_underflow, tc)
{
atf_tc_set_md_var(tc, "descr", "Test underflow in strtod(3)");
}
ATF_TC_BODY(strtod_underflow, tc)
{
const char *tmp =
"0.0000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000000"
"000000000000000000000000000000000000000000000000000000"
"000000000000000002";
errno = 0;
volatile double d = strtod(tmp, NULL);
if (d != 0 || errno != ERANGE)
atf_tc_fail("strtod(3) did not detect underflow");
}
/*
* Bug found by Geza Herman.
* See
* http://www.exploringbinary.com/a-bug-in-the-bigcomp-function-of-david-gays-strtod/
*/
ATF_TC(strtod_gherman_bug);
ATF_TC_HEAD(strtod_gherman_bug, tc)
{
atf_tc_set_md_var(tc, "descr", "Test a bug found by Geza Herman");
}
ATF_TC_BODY(strtod_gherman_bug, tc)
{
const char *str =
"1.8254370818746402660437411213933955878019332885742187";
errno = 0;
volatile double d = strtod(str, NULL);
ATF_CHECK(d == 0x1.d34fd8378ea83p+0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, strtod_basic);
ATF_TP_ADD_TC(tp, strtod_hex);
ATF_TP_ADD_TC(tp, strtod_inf);
ATF_TP_ADD_TC(tp, strtof_inf);
ATF_TP_ADD_TC(tp, strtold_inf);
ATF_TP_ADD_TC(tp, strtod_nan);
ATF_TP_ADD_TC(tp, strtof_nan);
ATF_TP_ADD_TC(tp, strtold_nan);
ATF_TP_ADD_TC(tp, strtod_round);
ATF_TP_ADD_TC(tp, strtod_underflow);
ATF_TP_ADD_TC(tp, strtod_gherman_bug);
return atf_no_error();
}