gcc/testsuite/gcc.dg/builtins-41.c

   1 /* Copyright (C) 2004 Free Software Foundation.
   2
   3    Check that constant folding of copysign, copysignf and copysignl math
   4    functions doesn't break anything and produces the expected results.
   5
   6    Written by Roger Sayle, 6th June 2004.  */
   7
   8 /* { dg-do link } */
   9 /* { dg-options "-O2" } */
  10
  11 extern void link_error(void);
  12
  13 extern double copysign(double, double);
  14 extern float copysignf(float, float);
  15 extern long double copysignl(long double, long double);
  16
  17 int main()
  18 {
  19   if (copysign (2.0, 1.0) != 2.0)
  20     link_error ();
  21   if (copysign (2.0, -1.0) != -2.0)
  22     link_error ();
  23   if (copysign (-2.0, 1.0) != 2.0)
  24     link_error ();
  25   if (copysign (-2.0, -1.0) != -2.0)
  26     link_error ();
  27
  28   if (copysign (2.0, 1.0) != 2.0)
  29     link_error ();
  30   if (copysign (2.0, -1.0) != -2.0)
  31     link_error ();
  32   if (copysign (-2.0, 1.0) != 2.0)
  33     link_error ();
  34   if (copysign (-2.0, -1.0) != -2.0)
  35     link_error ();
  36
  37   if (copysignf (2.0f, 1.0f) != 2.0f)
  38     link_error ();
  39   if (copysignf (2.0f, -1.0f) != -2.0f)
  40     link_error ();
  41   if (copysignf (-2.0f, 1.0f) != 2.0f)
  42     link_error ();
  43   if (copysignf (-2.0f, -1.0f) != -2.0f)
  44     link_error ();
  45
  46   if (copysignl (2.0l, 1.0l) != 2.0l)
  47     link_error ();
  48   if (copysignl (2.0l, -1.0l) != -2.0l)
  49     link_error ();
  50   if (copysignl (-2.0l, 1.0l) != 2.0l)
  51     link_error ();
  52   if (copysignl (-2.0l, -1.0l) != -2.0l)
  53     link_error ();
  54
  55   return 0;
  56 }
  57