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

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

  maint: run 'make update-copyright'
  

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• tests/test-rintl.c

• /* Test of rintl() function.
     Copyright (C) 2010-2025 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>, 2010.  */
  
  #include <config.h>
  
  #include <math.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (rintl, long double, (long double));
  
  #include <float.h>
  #include <stdio.h>
  
  #include "fpucw.h"
  #include "isnanl-nolibm.h"
  #include "minus-zero.h"
  #include "infinity.h"
  #include "nan.h"
  #include "macros.h"
  
  #undef INFINITY
  #undef NAN
  
  #define DOUBLE long double
  #define ISNAN isnanl
  #define INFINITY Infinityl ()
  #define NAN NaNl ()
  #define L_(literal) literal##L
  #define RINT rintl
  #define RANDOM randoml
  #include "test-rint.h"
  
  int
  main ()
  {
    DECL_LONG_DOUBLE_ROUNDING
  
    BEGIN_LONG_DOUBLE_ROUNDING ();
  
    /* Consider the current rounding mode, cf.
       <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/float.h.html>  */
    if (FLT_ROUNDS == 1)
      {
        /* The current rounding mode is round-to-nearest
           (the default in IEEE 754).  */
  
        /* Zero.  */
        ASSERT (rintl (0.0L) == 0.0L);
        ASSERT (rintl (minus_zerol) == 0.0L);
        /* Positive numbers.  */
        ASSERT (rintl (0.3L) == 0.0L);
        ASSERT (rintl (0.5L) == 0.0L); /* unlike roundl() */
        ASSERT (rintl (0.7L) == 1.0L);
        ASSERT (rintl (1.0L) == 1.0L);
        ASSERT (rintl (1.5L) == 2.0L);
        ASSERT (rintl (1.999L) == 2.0L);
        ASSERT (rintl (2.0L) == 2.0L);
        ASSERT (rintl (2.1L) == 2.0L);
        ASSERT (rintl (2.5L) == 2.0L); /* unlike roundl() */
        ASSERT (rintl (2.7L) == 3.0L);
        ASSERT (rintl (65535.999L) == 65536.0L);
        ASSERT (rintl (65536.0L) == 65536.0L);
        ASSERT (rintl (65536.001L) == 65536.0L);
        ASSERT (rintl (2.341e31L) == 2.341e31L);
        /* Negative numbers.  */
        ASSERT (rintl (-0.3L) == 0.0L);
        ASSERT (rintl (-0.5L) == 0.0L); /* unlike roundl() */
        ASSERT (rintl (-0.7L) == -1.0L);
        ASSERT (rintl (-1.0L) == -1.0L);
        ASSERT (rintl (-1.5L) == -2.0L);
        ASSERT (rintl (-1.999L) == -2.0L);
        ASSERT (rintl (-2.0L) == -2.0L);
        ASSERT (rintl (-2.1L) == -2.0L);
        ASSERT (rintl (-2.5L) == -2.0L); /* unlike roundl() */
        ASSERT (rintl (-2.7L) == -3.0L);
        ASSERT (rintl (-65535.999L) == -65536.0L);
        ASSERT (rintl (-65536.0L) == -65536.0L);
        ASSERT (rintl (-65536.001L) == -65536.0L);
        ASSERT (rintl (-2.341e31L) == -2.341e31L);
  
        test_function ();
  
        return test_exit_status;
      }
    else
      {
        fputs ("Skipping test: non-standard rounding mode\n", stderr);
        return 77;
      }
  }
  

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