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/* Test of a set of functions: func(NaN) --> NaN
$Id: xxx-nan.c,v 1.2 2007/11/05 11:18:16 dmix Exp $
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "progmem.h"
/* Table of tested functions. */
double (*tfun[]) (double) = {
acos,
asin,
atan,
ceil,
cos,
cosh,
exp,
floor,
log,
log10,
sin,
sinh,
sqrt,
tan,
tanh,
trunc,
round
};
union lofl_u {
long lo;
float fl;
};
volatile union lofl_u v = { 1 };
/* Table of test cases: NaNs */
PROGMEM const union lofl_u tnan[] = {
{ 0x7f800001 },
{ 0x7f800100 },
{ 0x7f810000 },
{ 0x7fc00000 },
{ 0x7fffffff },
{ 0xff800001 },
{ 0xff800100 },
{ 0xff810000 },
{ 0xffc00000 },
{ 0xffffffff },
};
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 f, n;
for (f = 0; f < (int) (sizeof(tfun)/sizeof(tfun[0])); f++) {
for (n = 0; n < (int) (sizeof(tnan)/sizeof(tnan[0])); n++) {
x.lo = pgm_read_dword (& tnan[n]);
v.fl = (tfun[f]) (x.fl);
if (!isnan (v.fl)) {
x_exit (f+1);
}
}
}
return 0;
}
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