Subversion Repositories openrisc_2011-10-31

/* Copyright (C) 2003 Free Software Foundation.

   Check that constant folding of built-in math functions doesn't

   break anything and produces the expected results.

   Written by Roger Sayle, 2nd April 2003.  */

/* { dg-do link } */

/* { dg-options "-O2 -ffast-math" } */

extern void link_error(void);

extern double exp(double);

extern double log(double);

extern double sqrt(double);

extern double pow(double,double);

extern double fabs(double);

void test(double x)

{

  if (sqrt(pow(x,4.0)) != x*x)

    link_error ();

  if (pow(sqrt(x),4.0) != x*x)

    link_error ();

  if (pow(pow(x,4.0),0.25) != x)

    link_error ();

}

void test2(double x, double y, double z)

{

  if (sqrt(pow(x,y)) != pow(fabs(x),y*0.5))

    link_error ();

  if (log(pow(x,y)) != y*log(x))

    link_error ();

  if (pow(exp(x),y) != exp(x*y))

    link_error ();

  if (pow(sqrt(x),y) != pow(x,y*0.5))

    link_error ();

  if (pow(pow(x,y),z) != pow(x,y*z))

    link_error ();

}

int main()

{

  test (2.0);

  test2 (2.0, 3.0, 4.0);

  return 0;

}