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/* Test of a set of functions: func(Inf) --> NaN
$Id: xxx-inf.c,v 1.1 2007/02/05 21:35:58 dmix Exp $
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "progmem.h"
union lofl_u {
long lo;
float fl;
};
volatile union lofl_u v = { 1 };
double (*tfun[]) (double) = { /* Table of tested functions. */
asin,
cos,
sin,
tan,
};
void x_exit (int index)
{
#ifndef __AVR__
fprintf (stderr, "t[%d]: %#lx\n", index - 1, v.lo);
#endif
exit (index ? index : -1);
}
int main ()
{
union lofl_u x;
int i;
for (i = 0; i < (int) (sizeof(tfun) / sizeof(tfun[0])); i++) {
x.lo = 0x7f800000; /* +Inf */
v.fl = (tfun[i]) (x.fl);
if (!isnan (v.fl)) {
x_exit (i+1);
}
x.lo = 0xff800000; /* -Inf */
v.fl = (tfun[i]) (x.fl);
if (!isnan (v.fl)) {
x_exit (i+1);
}
}
return 0;
}
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