kc3-lang/gnulib/tests/test-frexpl.c

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• tests/test-frexpl.c

• /* Test of splitting a 'long double' into fraction and mantissa.
     Copyright (C) 2007-2023 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 <config.h>
  
  #include <math.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (frexpl, long double, (long double, int *));
  
  #include <float.h>
  
  #include "fpucw.h"
  #include "isnanl-nolibm.h"
  #include "minus-zero.h"
  #include "infinity.h"
  #include "nan.h"
  #include "macros.h"
  
  /* Avoid some warnings from "gcc -Wshadow".
     This file doesn't use the exp() function.  */
  #undef exp
  #define exp exponent
  
  #undef INFINITY
  #undef NAN
  
  #define DOUBLE long double
  #define VOLATILE
  #define ISNAN isnanl
  #define INFINITY Infinityl ()
  #define NAN NaNl ()
  #define L_(literal) literal##L
  #define MINUS_ZERO minus_zerol
  #define MAX_EXP LDBL_MAX_EXP
  #define MIN_EXP LDBL_MIN_EXP
  /* On MIPS IRIX machines, LDBL_MIN_EXP is -1021, but the smallest reliable
     exponent for 'long double' is -964.  Similarly, on PowerPC machines,
     LDBL_MIN_EXP is -1021, but the smallest reliable exponent for 'long double'
     is -968.  For exponents below that, the precision may be truncated to the
     precision used for 'double'.  */
  #ifdef __sgi
  # define MIN_NORMAL_EXP (LDBL_MIN_EXP + 57)
  #elif defined __ppc || defined __ppc__ || defined __powerpc || defined __powerpc__
  # define MIN_NORMAL_EXP (LDBL_MIN_EXP + 53)
  #else
  # define MIN_NORMAL_EXP LDBL_MIN_EXP
  #endif
  #define FREXP frexpl
  #define RANDOM randoml
  #include "test-frexp.h"
  
  int
  main ()
  {
    DECL_LONG_DOUBLE_ROUNDING
  
    BEGIN_LONG_DOUBLE_ROUNDING ();
  
    test_function ();
  
    return 0;
  }
  

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