kc3-lang/gnulib/tests/test-isnanl.h

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• Hash : 7b089321
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  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• tests/test-isnanl.h

• /* Test of isnanl() substitute.
     Copyright (C) 2007-2025 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  
  #include <float.h>
  #include <limits.h>
  
  #include "minus-zero.h"
  #include "infinity.h"
  #include "nan.h"
  #include "snan.h"
  #include "macros.h"
  
  int
  main ()
  {
    /* Finite values.  */
    ASSERT (!isnanl (3.141L));
    ASSERT (!isnanl (3.141e30L));
    ASSERT (!isnanl (3.141e-30L));
    ASSERT (!isnanl (-2.718L));
    ASSERT (!isnanl (-2.718e30L));
    ASSERT (!isnanl (-2.718e-30L));
    ASSERT (!isnanl (0.0L));
    ASSERT (!isnanl (minus_zerol));
    /* Infinite values.  */
    ASSERT (!isnanl (Infinityl ()));
    ASSERT (!isnanl (- Infinityl ()));
    /* Quiet NaN.  */
    ASSERT (isnanl (NaNl ()));
  #if HAVE_SNANL
    /* Signalling NaN.  */
    ASSERT (isnanl (SNaNl ()));
  #endif
  
  #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
  /* Representation of an 80-bit 'long double' as an initializer for a sequence
     of 'unsigned int' words.  */
  # ifdef WORDS_BIGENDIAN
  #  define LDBL80_WORDS(exponent,manthi,mantlo) \
       { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
         ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16),   \
         (unsigned int) (mantlo) << 16                                        \
       }
  # else
  #  define LDBL80_WORDS(exponent,manthi,mantlo) \
       { mantlo, manthi, exponent }
  # endif
    { /* Quiet NaN.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
      ASSERT (isnanl (x.value));
    }
    {
      /* Signalling NaN.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
      ASSERT (isnanl (x.value));
    }
    /* isnanl should return something for noncanonical values.  */
    { /* Pseudo-NaN.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
      ASSERT (isnanl (x.value) || !isnanl (x.value));
    }
    { /* Pseudo-Infinity.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
      ASSERT (isnanl (x.value) || !isnanl (x.value));
    }
    { /* Pseudo-Zero.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
      ASSERT (isnanl (x.value) || !isnanl (x.value));
    }
    { /* Unnormalized number.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
      ASSERT (isnanl (x.value) || !isnanl (x.value));
    }
    { /* Pseudo-Denormal.  */
      static memory_long_double x =
        { .word = LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
      ASSERT (isnanl (x.value) || !isnanl (x.value));
    }
    #undef NWORDS
  #endif
  
    return test_exit_status;
  }
  

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