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

• /* Test getpayload.
     Copyright 2024-2025 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/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <math.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (getpayload, double, (const double *));
  
  #include "minus-zero.h"
  #include "infinity.h"
  #include "signed-nan.h"
  #include "signed-snan.h"
  #include "macros.h"
  
  #define PAYLOAD_BITS (53 - 2) /* = (DBL_MANT_DIG - 2) */
  
  int
  main ()
  {
    double arg;
    double ret;
  
    /* Test non-NaN arguments.  */
  
    arg = 2.718281828459045;
    ret = getpayload (&arg);
    ASSERT (ret == -1.0);
  
    arg = -3.141592653589793;
    ret = getpayload (&arg);
    ASSERT (ret == -1.0);
  
    arg = 0.0;
    ret = getpayload (&arg);
    ASSERT (ret == -1.0);
  
    arg = minus_zerod;
    ret = getpayload (&arg);
    ASSERT (ret == -1.0);
  
    arg = Infinityd ();
    ret = getpayload (&arg);
    ASSERT (ret == -1.0);
  
    arg = - Infinityd ();
    ret = getpayload (&arg);
    ASSERT (ret == -1.0);
  
    /* Test quiet NaNs.  */
    {
      int i;
      double p;
  
      for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
        {
          ASSERT (setpayload (&arg, p) == 0);
          ret = getpayload (&arg);
          ASSERT (ret == p);
          /* Test quiet NaNs with sign bit == 1.  */
          arg = minus_NaNd (arg);
          ret = getpayload (&arg);
          ASSERT (ret == p);
        }
  
      p = 1320699239819071.0;
      ASSERT (setpayload (&arg, p) == 0);
      ret = getpayload (&arg);
      ASSERT (ret == p);
    }
  
    /* Test signalling NaNs.  */
    {
      int i;
      double p;
  
      for (i = 0, p = 1.0; i < PAYLOAD_BITS; i++, p *= 2.0)
        {
          ASSERT (setpayloadsig (&arg, p) == 0);
          ret = getpayload (&arg);
          ASSERT (ret == p);
        }
  
      p = 1320699239819071.0;
      ASSERT (setpayloadsig (&arg, p) == 0);
      ret = getpayload (&arg);
      ASSERT (ret == p);
  
      /* Test signalling NaNs with sign bit == 1.  */
      memory_double pos_arg = memory_positive_SNaNd ();
      memory_double neg_arg = memory_negative_SNaNd ();
      double pos_ret = getpayload (&pos_arg.value);
      double neg_ret = getpayload (&neg_arg.value);
      ASSERT (neg_ret == pos_ret);
    }
  
    return test_exit_status;
  }
  

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