Subversion Repositories scarts

/* Copyright (C) 2002 Free Software Foundation.

   Test floating point negation produces the expected results.

   Written by Roger Sayle, 21st May 2002.  */

/* { dg-do run } */

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

extern void abort ();

double

dneg (double x)

{

  return -x;

}

double

dmult (double x)

{

  return -1.0 * x;

}

double

ddiv (double x)

{

  return x / -1.0;

}

float

fneg (float x)

{

  return -x;

}

float

fmult (float x)

{

  return -1.0f * x;

}

float

fdiv (float x)

{

  return x / -1.0f;

}

void

ftest(float src, float dst)

{

  if (fneg (src) != dst)

    abort ();

  if (src != fneg (dst))

    abort ();

  if (fmult (src) != dst)

    abort ();

  if (src != fmult (dst))

    abort ();

  if (fdiv (src) != dst)

    abort ();

  if (src != fdiv(dst))

    abort ();

}

void

dtest(double src, double dst)

{

  if (dneg (src) != dst)

    abort ();

  if (src != dneg (dst))

    abort ();

  if (dmult (src) != dst)

    abort ();

  if (src != dmult (dst))

    abort ();

  if (ddiv (src) != dst)

    abort ();

  if (src != ddiv(dst))

    abort ();

}

int

main ()

{

  ftest (1.0f, -1.0f);

  ftest (2.0f, -2.0f);

  ftest (-3.0f, 3.0f);

  ftest (0.0f, -0.0f);

  ftest (-0.0f, 0.0f);

  dtest (1.0, -1.0);

  dtest (2.0, -2.0);

  dtest (-3.0, 3.0);

  dtest (0.0, -0.0);

  dtest (-0.0, 0.0);

  return 0;

}