gcc/testsuite/gcc.dg/builtins-3.c

   1 /* Copyright (C) 2002  Free Software Foundation.
   2
   3    Verify that built-in math function constant folding of constant
   4    arguments is correctly performed by the by the compiler.
   5
   6    Written by Roger Sayle, 16th August 2002.  */
   7
   8 /* { dg-do link } */
   9 /* { dg-options "-O2 -ffast-math" } */
  10
  11 extern void link_error(void);
  12
  13 int main()
  14 {
  15   if (sqrt (0.0) != 0.0)
  16     link_error ();
  17
  18   if (sqrt (1.0) != 1.0)
  19     link_error ();
  20
  21   if (exp (0.0) != 1.0)
  22     link_error ();
  23
  24   if (log (1.0) != 0.0)
  25     link_error ();
  26
  27
  28   if (sqrtf (0.0f) != 0.0f)
  29     link_error ();
  30
  31   if (sqrtf (1.0f) != 1.0f)
  32     link_error ();
  33
  34   if (expf (0.0f) != 1.0f)
  35     link_error ();
  36
  37   if (logf (1.0f) != 0.0f)
  38     link_error ();
  39
  40
  41   if (sqrtl (0.0l) != 0.0l)
  42     link_error ();
  43
  44   if (sqrtl (1.0l) != 1.0l)
  45     link_error ();
  46
  47   if (expl (0.0l) != 1.0l)
  48     link_error ();
  49
  50   if (logl (1.0l) != 0.0l)
  51     link_error ();
  52
  53   return 0;
  54 }
  55