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/* Test of multiplication. Simple cases.
$Id: mul-01.c,v 1.1 2007/02/05 21:35:58 dmix Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include "progmem.h"
union lofl_u {
long lo;
float fl;
};
volatile union lofl_u v = { .lo = 1 };
PROGMEM const struct { /* Table of test cases: x * y = z */
union lofl_u x, y, z;
} t[] = {
/* 0.0 and 0.0 */
{ { 0x00000000 }, { 0x00000000 }, { 0x00000000 } },
{ { 0x00000000 }, { 0x80000000 }, { 0x80000000 } },
{ { 0x80000000 }, { 0x00000000 }, { 0x80000000 } },
{ { 0x80000000 }, { 0x80000000 }, { 0x00000000 } },
/* 0.0 and nonzero */
{ { 0x00000000 }, { 0x00000001 }, { 0x00000000 } },
{ { 0x00000000 }, { 0x007fffff }, { 0x00000000 } },
{ { 0x00000000 }, { 0x00800000 }, { 0x00000000 } },
{ { 0x00000000 }, { 0x7f7fffff }, { 0x00000000 } },
{ { 0x00000000 }, { 0x80000001 }, { 0x80000000 } },
{ { 0x00000000 }, { 0x807fffff }, { 0x80000000 } },
{ { 0x00000000 }, { 0x80800000 }, { 0x80000000 } },
{ { 0x00000000 }, { 0xff7fffff }, { 0x80000000 } },
{ { 0x00000001 }, { 0x00000000 }, { 0x00000000 } },
{ { 0x007fffff }, { 0x00000000 }, { 0x00000000 } },
{ { 0x00800000 }, { 0x00000000 }, { 0x00000000 } },
{ { 0x7f7fffff }, { 0x00000000 }, { 0x00000000 } },
{ { 0x80000001 }, { 0x00000000 }, { 0x80000000 } },
{ { 0x807fffff }, { 0x00000000 }, { 0x80000000 } },
{ { 0x80800000 }, { 0x00000000 }, { 0x80000000 } },
{ { 0xff7fffff }, { 0x00000000 }, { 0x80000000 } },
/* -0.0 and nonzero */
{ { 0x3f800000 }, { 0x80000000 }, { 0x80000000 } },
{ { 0xbf800000 }, { 0x80000000 }, { 0x00000000 } },
{ { 0x80000000 }, { 0x3f800000 }, { 0x80000000 } },
{ { 0x80000000 }, { 0xbf800000 }, { 0x00000000 } },
/* +1.0 * y */
{ { .fl = +1.0 }, { 0x00000000 }, { 0x00000000 } },
{ { .fl = +1.0 }, { 0x00000001 }, { 0x00000001 } },
{ { .fl = +1.0 }, { 0x00000100 }, { 0x00000100 } },
{ { .fl = +1.0 }, { 0x00010000 }, { 0x00010000 } },
{ { .fl = +1.0 }, { 0x007fffff }, { 0x007fffff } },
{ { .fl = +1.0 }, { 0x00800000 }, { 0x00800000 } },
{ { .fl = +1.0 }, { 0x3f800000 }, { 0x3f800000 } },
{ { .fl = +1.0 }, { 0x7f7fffff }, { 0x7f7fffff } },
{ { .fl = +1.0 }, { 0x80000000 }, { 0x80000000 } },
{ { .fl = +1.0 }, { 0x80000001 }, { 0x80000001 } },
{ { .fl = +1.0 }, { 0x80000100 }, { 0x80000100 } },
{ { .fl = +1.0 }, { 0x80010000 }, { 0x80010000 } },
{ { .fl = +1.0 }, { 0x807fffff }, { 0x807fffff } },
{ { .fl = +1.0 }, { 0x80800000 }, { 0x80800000 } },
{ { .fl = +1.0 }, { 0xbf800000 }, { 0xbf800000 } },
{ { .fl = +1.0 }, { 0xff7fffff }, { 0xff7fffff } },
/* -1.0 * y */
{ { .fl = -1.0 }, { 0x00000000 }, { 0x80000000 } },
{ { .fl = -1.0 }, { 0x00000001 }, { 0x80000001 } },
{ { .fl = -1.0 }, { 0x00000100 }, { 0x80000100 } },
{ { .fl = -1.0 }, { 0x00010000 }, { 0x80010000 } },
{ { .fl = -1.0 }, { 0x007fffff }, { 0x807fffff } },
{ { .fl = -1.0 }, { 0x00800000 }, { 0x80800000 } },
{ { .fl = -1.0 }, { 0x3f800000 }, { 0xbf800000 } },
{ { .fl = -1.0 }, { 0x7f7fffff }, { 0xff7fffff } },
{ { .fl = -1.0 }, { 0x80000000 }, { 0x00000000 } },
{ { .fl = -1.0 }, { 0x80000001 }, { 0x00000001 } },
{ { .fl = -1.0 }, { 0x80000100 }, { 0x00000100 } },
{ { .fl = -1.0 }, { 0x80010000 }, { 0x00010000 } },
{ { .fl = -1.0 }, { 0x807fffff }, { 0x007fffff } },
{ { .fl = -1.0 }, { 0x80800000 }, { 0x00800000 } },
{ { .fl = -1.0 }, { 0xbf800000 }, { 0x3f800000 } },
{ { .fl = -1.0 }, { 0xff7fffff }, { 0x7f7fffff } },
/* x * +1.0 */
{ { 0x00000000 }, { .fl = +1.0 }, { 0x00000000 } },
{ { 0x00000001 }, { .fl = +1.0 }, { 0x00000001 } },
{ { 0x00000100 }, { .fl = +1.0 }, { 0x00000100 } },
{ { 0x00010000 }, { .fl = +1.0 }, { 0x00010000 } },
{ { 0x007fffff }, { .fl = +1.0 }, { 0x007fffff } },
{ { 0x00800000 }, { .fl = +1.0 }, { 0x00800000 } },
{ { 0x3f800000 }, { .fl = +1.0 }, { 0x3f800000 } },
{ { 0x7f7fffff }, { .fl = +1.0 }, { 0x7f7fffff } },
{ { 0x80000000 }, { .fl = +1.0 }, { 0x80000000 } },
{ { 0x80000001 }, { .fl = +1.0 }, { 0x80000001 } },
{ { 0x80000100 }, { .fl = +1.0 }, { 0x80000100 } },
{ { 0x80010000 }, { .fl = +1.0 }, { 0x80010000 } },
{ { 0x807fffff }, { .fl = +1.0 }, { 0x807fffff } },
{ { 0x80800000 }, { .fl = +1.0 }, { 0x80800000 } },
{ { 0xbf800000 }, { .fl = +1.0 }, { 0xbf800000 } },
{ { 0xff7fffff }, { .fl = +1.0 }, { 0xff7fffff } },
/* -1.0 * y */
{ { 0x00000000 }, { .fl = -1.0 }, { 0x80000000 } },
{ { 0x00000001 }, { .fl = -1.0 }, { 0x80000001 } },
{ { 0x00000100 }, { .fl = -1.0 }, { 0x80000100 } },
{ { 0x00010000 }, { .fl = -1.0 }, { 0x80010000 } },
{ { 0x007fffff }, { .fl = -1.0 }, { 0x807fffff } },
{ { 0x00800000 }, { .fl = -1.0 }, { 0x80800000 } },
{ { 0x3f800000 }, { .fl = -1.0 }, { 0xbf800000 } },
{ { 0x7f7fffff }, { .fl = -1.0 }, { 0xff7fffff } },
{ { 0x80000000 }, { .fl = -1.0 }, { 0x00000000 } },
{ { 0x80000001 }, { .fl = -1.0 }, { 0x00000001 } },
{ { 0x80000100 }, { .fl = -1.0 }, { 0x00000100 } },
{ { 0x80010000 }, { .fl = -1.0 }, { 0x00010000 } },
{ { 0x807fffff }, { .fl = -1.0 }, { 0x007fffff } },
{ { 0x80800000 }, { .fl = -1.0 }, { 0x00800000 } },
{ { 0xbf800000 }, { .fl = -1.0 }, { 0x3f800000 } },
{ { 0xff7fffff }, { .fl = -1.0 }, { 0x7f7fffff } },
};
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,y,z;
int i;
for (i = 0; i < (int) (sizeof(t) / sizeof(t[0])); i++) {
x.lo = pgm_read_dword (& t[i].x);
y.lo = pgm_read_dword (& t[i].y);
z.lo = pgm_read_dword (& t[i].z);
v.fl = x.fl * y.fl;
/* Comparison is integer to verify the zero sign. */
if (v.lo != z.lo)
x_exit (i+1);
}
return 0;
}
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