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/* Test of conversion float --> unsigned long long.
$Id: flt2unll-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 unsigned long long v = 1;
PROGMEM const struct { /* Table of test cases. */
union lofl_u x;
unsigned long long z;
} t[] = {
/* 0.0 */
{ { 0x00000000 }, 0 },
{ { 0x80000000 }, 0 },
/* too small */
{ { 0x00000001 }, 0 },
{ { 0x007fffff }, 0 },
{ { 0x00800000 }, 0 },
{ { 0x3f7fffff }, 0 },
{ { 0x80000001 }, 0 },
{ { 0x807fffff }, 0 },
{ { 0x80800000 }, 0 },
{ { 0xbf7fffff }, 0 },
/* rounding (trunc to zero) */
{ { 0x3f7fffff }, 0 },
{ { 0x3f800000 }, 1 },
{ { 0x3fffffff }, 1 },
{ { 0x40000000 }, 2 },
{ { 0x403fffff }, 2 },
{ { 0x40400000 }, 3 },
{ { 0x407fffff }, 3 },
{ { .fl = 0x1.000000p+22 }, 0x00400000 },
{ { .fl = 0x1.000002p+22 }, 0x00400000 },
/* all shift values */
{ { .fl = 0x1p00 }, 0x0000000000000001LL },
{ { .fl = 0x1p01 }, 0x0000000000000002LL },
{ { .fl = 0x1p02 }, 0x0000000000000004LL },
{ { .fl = 0x1p03 }, 0x0000000000000008LL },
{ { .fl = 0x1p04 }, 0x0000000000000010LL },
{ { .fl = 0x1p05 }, 0x0000000000000020LL },
{ { .fl = 0x1p06 }, 0x0000000000000040LL },
{ { .fl = 0x1p07 }, 0x0000000000000080LL },
{ { .fl = 0x1p08 }, 0x0000000000000100LL },
{ { .fl = 0x1p09 }, 0x0000000000000200LL },
{ { .fl = 0x1p10 }, 0x0000000000000400LL },
{ { .fl = 0x1p11 }, 0x0000000000000800LL },
{ { .fl = 0x1p12 }, 0x0000000000001000LL },
{ { .fl = 0x1p13 }, 0x0000000000002000LL },
{ { .fl = 0x1p14 }, 0x0000000000004000LL },
{ { .fl = 0x1p15 }, 0x0000000000008000LL },
{ { .fl = 0x1p16 }, 0x0000000000010000LL },
{ { .fl = 0x1p17 }, 0x0000000000020000LL },
{ { .fl = 0x1p18 }, 0x0000000000040000LL },
{ { .fl = 0x1p19 }, 0x0000000000080000LL },
{ { .fl = 0x1p20 }, 0x0000000000100000LL },
{ { .fl = 0x1p21 }, 0x0000000000200000LL },
{ { .fl = 0x1p22 }, 0x0000000000400000LL },
{ { .fl = 0x1p23 }, 0x0000000000800000LL },
{ { .fl = 0x1p24 }, 0x0000000001000000LL },
{ { .fl = 0x1p25 }, 0x0000000002000000LL },
{ { .fl = 0x1p26 }, 0x0000000004000000LL },
{ { .fl = 0x1p27 }, 0x0000000008000000LL },
{ { .fl = 0x1p28 }, 0x0000000010000000LL },
{ { .fl = 0x1p29 }, 0x0000000020000000LL },
{ { .fl = 0x1p30 }, 0x0000000040000000LL },
{ { .fl = 0x1p31 }, 0x0000000080000000LL },
{ { .fl = 0x1p32 }, 0x0000000100000000LL },
{ { .fl = 0x1p33 }, 0x0000000200000000LL },
{ { .fl = 0x1p34 }, 0x0000000400000000LL },
{ { .fl = 0x1p35 }, 0x0000000800000000LL },
{ { .fl = 0x1p36 }, 0x0000001000000000LL },
{ { .fl = 0x1p37 }, 0x0000002000000000LL },
{ { .fl = 0x1p38 }, 0x0000004000000000LL },
{ { .fl = 0x1p39 }, 0x0000008000000000LL },
{ { .fl = 0x1p40 }, 0x0000010000000000LL },
{ { .fl = 0x1p41 }, 0x0000020000000000LL },
{ { .fl = 0x1p42 }, 0x0000040000000000LL },
{ { .fl = 0x1p43 }, 0x0000080000000000LL },
{ { .fl = 0x1p44 }, 0x0000100000000000LL },
{ { .fl = 0x1p45 }, 0x0000200000000000LL },
{ { .fl = 0x1p46 }, 0x0000400000000000LL },
{ { .fl = 0x1p47 }, 0x0000800000000000LL },
{ { .fl = 0x1p48 }, 0x0001000000000000LL },
{ { .fl = 0x1p49 }, 0x0002000000000000LL },
{ { .fl = 0x1p50 }, 0x0004000000000000LL },
{ { .fl = 0x1p51 }, 0x0008000000000000LL },
{ { .fl = 0x1p52 }, 0x0010000000000000LL },
{ { .fl = 0x1p53 }, 0x0020000000000000LL },
{ { .fl = 0x1p54 }, 0x0040000000000000LL },
{ { .fl = 0x1p55 }, 0x0080000000000000LL },
{ { .fl = 0x1p56 }, 0x0100000000000000LL },
{ { .fl = 0x1p57 }, 0x0200000000000000LL },
{ { .fl = 0x1p58 }, 0x0400000000000000LL },
{ { .fl = 0x1p59 }, 0x0800000000000000LL },
{ { .fl = 0x1p60 }, 0x1000000000000000LL },
{ { .fl = 0x1p61 }, 0x2000000000000000LL },
{ { .fl = 0x1p62 }, 0x4000000000000000LL },
{ { .fl = 0x1p63 }, 0x8000000000000000LL },
/* max values */
{ { .fl = 0x0.fffffep+63 }, 0x7fffff0000000000LL },
{ { .fl = 0x0.ffffffp+63 }, 0x7fffff8000000000LL },
{ { .fl = 0x1.000000p+63 }, 0x8000000000000000LL },
{ { .fl = 0x1.000002p+63 }, 0x8000010000000000LL },
{ { .fl = 0x0.fffffep+64 }, 0xfffffe0000000000LL },
{ { .fl = 0x0.ffffffp+64 }, 0xffffff0000000000LL },
/* Overflow */
{ { .fl = 0x1.000000p+64 }, 0 },
/* { { .fl = 0x1.000002p+64 }, 0 }, ??? Glibc gives non 0 */
{ { 0x7f7fffff }, 0 },
{ { 0xff7fffff }, 0 },
/* Inf */
{ { 0x7f800000 }, 0 },
{ { 0xff800000 }, 0 },
/* NaN */
{ { 0x7f800001 }, 0 },
{ { 0x7fc00000 }, 0 },
{ { 0x7fffffff }, 0 },
{ { 0xff800001 }, 0 },
{ { 0xffc00000 }, 0 },
{ { 0xffffffff }, 0 },
#ifdef __AVR__
/* negative */
{ { .fl = -0x1p00 }, 0xffffffffffffffffLL },
{ { .fl = -0x3p00 }, -0x0000000000000003LL },
{ { .fl = -0xffp00 }, -0x00000000000000ffLL },
{ { .fl = -0x100p00 }, -0x0000000000000100LL },
{ { .fl = -0xffffp00 }, -0x000000000000ffffLL },
{ { .fl = -0x10000p00 }, -0x0000000000010000LL },
{ { .fl = -0xffffffp00 }, -0x0000000000ffffffLL },
{ { .fl = -0xffffffp07 }, -0x000000007fffff80LL },
{ { .fl = -0x1000000p07 }, -0x0000000080000000LL },
{ { .fl = -0xffffffp08 }, -0x00000000ffffff00LL },
{ { .fl = -0x1000000p08 }, -0x0000000100000000LL },
{ { .fl = -0xffffffp39 }, -0x7fffff8000000000LL },
{ { .fl = -0x0.fffffep+63 }, -0x7fffff0000000000LL },
{ { .fl = -0x0.ffffffp+63 }, -0x7fffff8000000000LL },
{ { .fl = -0x1.000000p+63 }, 0x8000000000000000LL },
{ { .fl = -0x0.ffffffp+64 }, -0xffffff0000000000LL },
{ { .fl = -0x1.000000p+64 }, 0 },
{ { .fl = -0x1.000002p+64 }, 0 },
{ { .fl = 0x1.000002p+64 }, 0 },
#endif
};
void x_exit (int index)
{
#ifndef __AVR__
fprintf (stderr, "t[%d]: %llu (%#llx)\n", index - 1, v, v);
#endif
exit (index ? index : -1);
}
int main ()
{
union lofl_u x;
unsigned long long z;
int i;
for (i = 0; i < (int) (sizeof(t) / sizeof(t[0])); i++) {
x.lo = pgm_read_dword (& t[i].x);
z = pgm_read_qword (& t[i].z);
v = x.fl; /* __fixunssfdi() */
if (v != z)
x_exit (i+1);
}
return 0;
}
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