mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 18:40:14 +00:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
124 lines
4.4 KiB
C
124 lines
4.4 KiB
C
/* Copyright (C) 1999 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Andreas Jaeger <aj@suse.de>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <math.h>
|
|
#include <float.h>
|
|
#include <stdio.h>
|
|
|
|
static int errors = 0;
|
|
|
|
|
|
static void
|
|
check (const char *testname, int result)
|
|
{
|
|
if (!result) {
|
|
printf ("Failure: %s\n", testname);
|
|
errors++;
|
|
}
|
|
}
|
|
|
|
#define TEST_FUNC(NAME, FLOAT, NANFUNC, EPSILON, HUGEVAL) \
|
|
static void \
|
|
NAME (void) \
|
|
{ \
|
|
/* Variables are declared volatile to forbid some compiler \
|
|
optimizations. */ \
|
|
volatile FLOAT Inf_var, NaN_var, zero_var, one_var; \
|
|
FLOAT x1, x2; \
|
|
\
|
|
zero_var = 0.0; \
|
|
one_var = 1.0; \
|
|
NaN_var = zero_var/zero_var; \
|
|
Inf_var = one_var / zero_var; \
|
|
\
|
|
(void) &zero_var; \
|
|
(void) &one_var; \
|
|
(void) &NaN_var; \
|
|
(void) &Inf_var; \
|
|
\
|
|
\
|
|
check (#FLOAT " isinf (inf) == 1", isinf (Inf_var) == 1); \
|
|
check (#FLOAT " isinf (-inf) == -1", isinf (-Inf_var) == -1); \
|
|
check (#FLOAT " !isinf (1)", !(isinf (one_var))); \
|
|
check (#FLOAT " !isinf (NaN)", !(isinf (NaN_var))); \
|
|
\
|
|
check (#FLOAT " isnan (NaN)", isnan (NaN_var)); \
|
|
check (#FLOAT " isnan (-NaN)", isnan (-NaN_var)); \
|
|
check (#FLOAT " !isnan (1)", !(isnan (one_var))); \
|
|
check (#FLOAT " !isnan (inf)", !(isnan (Inf_var))); \
|
|
\
|
|
check (#FLOAT " inf == inf", Inf_var == Inf_var); \
|
|
check (#FLOAT " -inf == -inf", -Inf_var == -Inf_var); \
|
|
check (#FLOAT " inf != -inf", Inf_var != -Inf_var); \
|
|
check (#FLOAT " NaN != NaN", NaN_var != NaN_var); \
|
|
\
|
|
/* \
|
|
the same tests but this time with NAN from <bits/nan.h> \
|
|
NAN is a double const \
|
|
*/ \
|
|
check (#FLOAT " isnan (NAN)", isnan (NAN)); \
|
|
check (#FLOAT " isnan (-NAN)", isnan (-NAN)); \
|
|
check (#FLOAT " !isinf (NAN)", !(isinf (NAN))); \
|
|
check (#FLOAT " !isinf (-NAN)", !(isinf (-NAN))); \
|
|
check (#FLOAT " NAN != NAN", NAN != NAN); \
|
|
\
|
|
/* \
|
|
And again with the value returned by the `nan' function. \
|
|
*/ \
|
|
check (#FLOAT " isnan (NAN)", isnan (NANFUNC (""))); \
|
|
check (#FLOAT " isnan (-NAN)", isnan (-NANFUNC (""))); \
|
|
check (#FLOAT " !isinf (NAN)", !(isinf (NANFUNC ("")))); \
|
|
check (#FLOAT " !isinf (-NAN)", !(isinf (-NANFUNC ("")))); \
|
|
check (#FLOAT " NAN != NAN", NANFUNC ("") != NANFUNC ("")); \
|
|
\
|
|
/* test if EPSILON is ok */ \
|
|
x1 = 1.0; \
|
|
x2 = x1 + EPSILON; \
|
|
check (#FLOAT " 1 != 1+EPSILON", x1 != x2); \
|
|
\
|
|
x1 = 1.0; \
|
|
x2 = x1 - EPSILON; \
|
|
check (#FLOAT " 1 != 1-EPSILON", x1 != x2); \
|
|
\
|
|
/* test if HUGE_VALx is ok */ \
|
|
x1 = HUGEVAL; \
|
|
check (#FLOAT " isinf (HUGE_VALx) == +1", isinf (x1) == +1); \
|
|
x1 = - HUGEVAL; \
|
|
check (#FLOAT " isinf (-HUGE_VALx) == -1", isinf (x1) == -1); \
|
|
}
|
|
|
|
TEST_FUNC (float_test, float, nanf, FLT_EPSILON, HUGE_VALF)
|
|
TEST_FUNC (double_test, double, nan, DBL_EPSILON, HUGE_VAL)
|
|
#ifndef NO_LONG_DOUBLE
|
|
TEST_FUNC (ldouble_test, long double, nanl, LDBL_EPSILON, HUGE_VALL)
|
|
#endif
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
float_test ();
|
|
double_test ();
|
|
|
|
#ifndef NO_LONG_DOUBLE
|
|
ldouble_test ();
|
|
#endif
|
|
|
|
return errors != 0;
|
|
}
|