minix/tests/lib/libc/gen/t_fpclassify.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

206 lines
4.9 KiB
C

/* $NetBSD: t_fpclassify.c,v 1.3 2011/10/01 21:47:08 christos Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* 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 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.
*/
#include <atf-c.h>
#include <float.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#ifndef _FLOAT_IEEE754
ATF_TC(no_test);
ATF_TC_HEAD(no_test, tc)
{
atf_tc_set_md_var(tc, "descr", "Dummy test");
}
ATF_TC_BODY(no_test,tc)
{
atf_tc_skip("Test not available on this architecture");
}
#else /* defined(_FLOAT_IEEE754) */
ATF_TC(fpclassify_float);
ATF_TC_HEAD(fpclassify_float, tc)
{
atf_tc_set_md_var(tc, "descr", "Test float operations");
}
ATF_TC_BODY(fpclassify_float, tc)
{
float d0, d1, d2, f, ip;
int e, i;
d0 = FLT_MIN;
ATF_REQUIRE_EQ(fpclassify(d0), FP_NORMAL);
f = frexpf(d0, &e);
ATF_REQUIRE_EQ(e, FLT_MIN_EXP);
ATF_REQUIRE_EQ(f, 0.5);
d1 = d0;
/* shift a "1" bit through the mantissa (skip the implicit bit) */
for (i = 1; i < FLT_MANT_DIG; i++) {
d1 /= 2;
ATF_REQUIRE_EQ(fpclassify(d1), FP_SUBNORMAL);
ATF_REQUIRE(d1 > 0 && d1 < d0);
d2 = ldexpf(d0, -i);
ATF_REQUIRE_EQ(d2, d1);
d2 = modff(d1, &ip);
ATF_REQUIRE_EQ(d2, d1);
ATF_REQUIRE_EQ(ip, 0);
f = frexpf(d1, &e);
ATF_REQUIRE_EQ(e, FLT_MIN_EXP - i);
ATF_REQUIRE_EQ(f, 0.5);
}
d1 /= 2;
ATF_REQUIRE_EQ(fpclassify(d1), FP_ZERO);
f = frexpf(d1, &e);
ATF_REQUIRE_EQ(e, 0);
ATF_REQUIRE_EQ(f, 0);
}
ATF_TC(fpclassify_double);
ATF_TC_HEAD(fpclassify_double, tc)
{
atf_tc_set_md_var(tc, "descr", "Test double operations");
}
ATF_TC_BODY(fpclassify_double, tc)
{
double d0, d1, d2, f, ip;
int e, i;
d0 = DBL_MIN;
ATF_REQUIRE_EQ(fpclassify(d0), FP_NORMAL);
f = frexp(d0, &e);
ATF_REQUIRE_EQ(e, DBL_MIN_EXP);
ATF_REQUIRE_EQ(f, 0.5);
d1 = d0;
/* shift a "1" bit through the mantissa (skip the implicit bit) */
for (i = 1; i < DBL_MANT_DIG; i++) {
d1 /= 2;
ATF_REQUIRE_EQ(fpclassify(d1), FP_SUBNORMAL);
ATF_REQUIRE(d1 > 0 && d1 < d0);
d2 = ldexp(d0, -i);
ATF_REQUIRE_EQ(d2, d1);
d2 = modf(d1, &ip);
ATF_REQUIRE_EQ(d2, d1);
ATF_REQUIRE_EQ(ip, 0);
f = frexp(d1, &e);
ATF_REQUIRE_EQ(e, DBL_MIN_EXP - i);
ATF_REQUIRE_EQ(f, 0.5);
}
d1 /= 2;
ATF_REQUIRE_EQ(fpclassify(d1), FP_ZERO);
f = frexp(d1, &e);
ATF_REQUIRE_EQ(e, 0);
ATF_REQUIRE_EQ(f, 0);
}
/*
* XXX NetBSD doesn't have long-double flavors of frexp, ldexp, and modf,
* XXX so this test is disabled.
*/
#ifdef TEST_LONG_DOUBLE
ATF_TC(fpclassify_long_double);
ATF_TC_HEAD(fpclassify_long_double, tc)
{
atf_tc_set_md_var(tc, "descr", "Test long double operations");
}
ATF_TC_BODY(fpclassify_long_double, tc)
{
long double d0, d1, d2, f, ip;
int e, i;
d0 = LDBL_MIN;
ATF_REQUIRE_EQ(fpclassify(d0), FP_NORMAL);
f = frexpl(d0, &e);
ATF_REQUIRE_EQ(e, LDBL_MIN_EXP);
ATF_REQUIRE_EQ(f, 0.5);
d1 = d0;
/* shift a "1" bit through the mantissa (skip the implicit bit) */
for (i = 1; i < LDBL_MANT_DIG; i++) {
d1 /= 2;
ATF_REQUIRE_EQ(fpclassify(d1), FP_SUBNORMAL);
ATF_REQUIRE(d1 > 0 && d1 < d0);
d2 = ldexpl(d0, -i);
ATF_REQUIRE_EQ(d2, d1);
d2 = modfl(d1, &ip);
ATF_REQUIRE_EQ(d2, d1);
ATF_REQUIRE_EQ(ip, 0);
f = frexpl(d1, &e);
ATF_REQUIRE_EQ(e, LDBL_MIN_EXP - i);
ATF_REQUIRE_EQ(f, 0.5);
}
d1 /= 2;
ATF_REQUIRE_EQ(fpclassify(d1), FP_ZERO);
f = frexpl(d1, &e);
ATF_REQUIRE_EQ(e, 0);
ATF_REQUIRE_EQ(f, 0);
}
#endif /* TEST_LONG_DOUBLE */
#endif /* _FLOAT_IEEE754 */
ATF_TP_ADD_TCS(tp)
{
#ifndef _FLOAT_IEEE754
ATF_TP_ADD_TC(tp, no_test);
#else
ATF_TP_ADD_TC(tp, fpclassify_float);
ATF_TP_ADD_TC(tp, fpclassify_double);
#ifdef TEST_LONG_DOUBLE
ATF_TP_ADD_TC(tp, fpclassify_long_double);
#endif /* TEST_LONG_DOUBLE */
#endif /* _FLOAT_IEEE754 */
return atf_no_error();
}