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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [builtins-10.c] - Blame information for rev 867

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Line No. Rev Author Line
1 149 jeremybenn
/* Copyright (C) 2003 Free Software Foundation.
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   Check that constant folding of built-in math functions doesn't
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   break anything and produces the expected results.
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   Written by Roger Sayle, 2nd April 2003.  */
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/* { dg-do link } */
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/* { dg-options "-O2 -ffast-math" } */
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extern void link_error(void);
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extern double exp(double);
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extern double log(double);
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extern double sqrt(double);
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extern double pow(double,double);
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extern double fabs(double);
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void test(double x)
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{
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  if (sqrt(pow(x,4.0)) != x*x)
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    link_error ();
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  if (pow(sqrt(x),4.0) != x*x)
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    link_error ();
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  if (pow(pow(x,4.0),0.25) != x)
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    link_error ();
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}
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void test2(double x, double y, double z)
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{
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  if (sqrt(pow(x,y)) != pow(fabs(x),y*0.5))
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    link_error ();
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  if (log(pow(x,y)) != y*log(x))
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    link_error ();
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  if (pow(exp(x),y) != exp(x*y))
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    link_error ();
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  if (pow(sqrt(x),y) != pow(x,y*0.5))
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    link_error ();
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  if (pow(pow(x,y),z) != pow(x,y*z))
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    link_error ();
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}
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int main()
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{
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  test (2.0);
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  test2 (2.0, 3.0, 4.0);
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  return 0;
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}
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