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

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• Hash : fdae9210
  Author :
  Date : 2023-03-25T19:31:14
  

  Make some header file tests a bit stronger.
  
  * tests/test-float.c: Include fpucw.h and macros.h only after checking
  the macros.
  * tests/test-glob-h.c: Include macros.h only after checking the types
  and macros.
  * tests/test-inttypes.c: Don't include <stddef.h>.
  * tests/test-math.c: Include <limits.h> and macros.h only after checking
  the types and macros.
  * tests/test-stddef.c: Include <limits.h> only after checking the types
  and macros.
  * tests/test-sys_select.c: Include signature.h only after checking the
  types.
  * tests/test-sys_socket.c: Include <errno.h> only after checking the
  types and macros.
  * tests/test-wctype-h.c: Include macros.h only after checking the types.
  

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• tests/test-math.c

• /* Test of <math.h> substitute.
     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>
  
  #ifndef NAN
  # error NAN should be defined
  choke me
  #endif
  
  #ifndef HUGE_VALF
  # error HUGE_VALF should be defined
  choke me
  #endif
  
  #ifndef HUGE_VAL
  # error HUGE_VAL should be defined
  choke me
  #endif
  
  #ifndef HUGE_VALL
  # error HUGE_VALL should be defined
  choke me
  #endif
  
  #ifndef FP_ILOGB0
  # error FP_ILOGB0 should be defined
  choke me
  #endif
  
  #ifndef FP_ILOGBNAN
  # error FP_ILOGBNAN should be defined
  choke me
  #endif
  
  #if 0
  /* Check that NAN expands into a constant expression.  */
  static float n = NAN;
  #endif
  
  #include <limits.h>
  
  #include "macros.h"
  
  /* Compare two numbers with ==.
     This is a separate function because IRIX 6.5 "cc -O" miscompiles an
     'x == x' test.  */
  static int
  numeric_equalf (float x, float y)
  {
    return x == y;
  }
  static int
  numeric_equald (double x, double y)
  {
    return x == y;
  }
  static int
  numeric_equall (long double x, long double y)
  {
    return x == y;
  }
  
  int
  main (void)
  {
    double d = NAN;
    double zero = 0.0;
    ASSERT (!numeric_equald (d, d));
  
    d = HUGE_VAL;
    ASSERT (numeric_equald (d, 1.0 / zero));
  
    ASSERT (numeric_equalf (HUGE_VALF, HUGE_VALF + HUGE_VALF));
  
    ASSERT (numeric_equald (HUGE_VAL, HUGE_VAL + HUGE_VAL));
  
    ASSERT (numeric_equall (HUGE_VALL, HUGE_VALL + HUGE_VALL));
  
    /* Check the value of FP_ILOGB0.  */
    ASSERT (FP_ILOGB0 == INT_MIN || FP_ILOGB0 == - INT_MAX);
  
    /* Check the value of FP_ILOGBNAN.  */
    ASSERT (FP_ILOGBNAN == INT_MIN || FP_ILOGBNAN == INT_MAX);
  
    return 0;
  }
  

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