Viewing file:  fnegate-1.c (1.3 KB) -rw-r--r--
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/* 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;
}
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