vasilito
ff4ff35918
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105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/* Test of isnanl() substitute.
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Copyright (C) 2007-2024 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
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#include <float.h>
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#include <limits.h>
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#include "minus-zero.h"
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#include "infinity.h"
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#include "nan.h"
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#include "snan.h"
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#include "macros.h"
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int
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main ()
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{
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/* Finite values. */
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ASSERT (!isnanl (3.141L));
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ASSERT (!isnanl (3.141e30L));
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ASSERT (!isnanl (3.141e-30L));
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ASSERT (!isnanl (-2.718L));
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ASSERT (!isnanl (-2.718e30L));
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ASSERT (!isnanl (-2.718e-30L));
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ASSERT (!isnanl (0.0L));
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ASSERT (!isnanl (minus_zerol));
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/* Infinite values. */
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ASSERT (!isnanl (Infinityl ()));
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ASSERT (!isnanl (- Infinityl ()));
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/* Quiet NaN. */
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ASSERT (isnanl (NaNl ()));
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#if HAVE_SNANL
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/* Signalling NaN. */
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ASSERT (isnanl (SNaNl ()));
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#endif
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#if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
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/* Representation of an 80-bit 'long double' as an initializer for a sequence
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of 'unsigned int' words. */
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# ifdef WORDS_BIGENDIAN
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# define LDBL80_WORDS(exponent,manthi,mantlo) \
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{ ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
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((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16), \
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(unsigned int) (mantlo) << 16 \
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}
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# else
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# define LDBL80_WORDS(exponent,manthi,mantlo) \
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{ mantlo, manthi, exponent }
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# endif
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{ /* Quiet NaN. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
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ASSERT (isnanl (x.value));
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}
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{
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/* Signalling NaN. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
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ASSERT (isnanl (x.value));
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}
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/* isnanl should return something for noncanonical values. */
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{ /* Pseudo-NaN. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
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ASSERT (isnanl (x.value) || !isnanl (x.value));
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}
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{ /* Pseudo-Infinity. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
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ASSERT (isnanl (x.value) || !isnanl (x.value));
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}
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{ /* Pseudo-Zero. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
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ASSERT (isnanl (x.value) || !isnanl (x.value));
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}
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{ /* Unnormalized number. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
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ASSERT (isnanl (x.value) || !isnanl (x.value));
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}
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{ /* Pseudo-Denormal. */
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static memory_long_double x =
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{ .word = LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
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ASSERT (isnanl (x.value) || !isnanl (x.value));
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}
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#undef NWORDS
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#endif
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return 0;
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}
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