Viewing file:  builtins-6.c (1.12 KB) -rw-r--r--
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/* Copyright (C) 2003 Free Software Foundation.
Verify that constant folding comparisons against built-in math functions
don't cause any problems for the compiler, and produce expected results.
Written by Roger Sayle, 15th March 2003. */
/* { dg-do run } */
/* { dg-options "-O2 -ffast-math" } */
#include <float.h>
extern void abort (void);
extern double sqrt (double);
int test1(double x)
{
return sqrt(x) < -9.0;
}
int test2(double x)
{
return sqrt(x) > -9.0;
}
int test3(double x)
{
return sqrt(x) < 9.0;
}
int test4(double x)
{
return sqrt(x) > 9.0;
}
int test5(double x)
{
return sqrt(x) < DBL_MAX;
}
int test6(double x)
{
return sqrt(x) > DBL_MAX;
}
int main()
{
double x;
x = 80.0;
if (test1 (x))
abort ();
if (! test2 (x))
abort ();
if (! test3 (x))
abort ();
if (test4 (x))
abort ();
if (! test5 (x))
abort ();
if (test6 (x))
abort ();
x = 100.0;
if (test1 (x))
abort ();
if (! test2 (x))
abort ();
if (test3 (x))
abort ();
if (! test4 (x))
abort ();
if (! test5 (x))
abort ();
if (test6 (x))
abort ();
return 0;
}
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