1 #include <stdlib.h>
2 #include <stdio.h>
3 #include <float.h>
4 
5 #include "util/u_math.h"
6 #include "util/u_half.h"
7 
8 int
main(int argc,char ** argv)9 main(int argc, char **argv)
10 {
11    unsigned i;
12    unsigned roundtrip_fails = 0;
13 
14    for(i = 0; i < 1 << 16; ++i)
15    {
16       uint16_t h = (uint16_t) i;
17       union fi f;
18       uint16_t rh;
19 
20       f.f = util_half_to_float(h);
21       rh = util_float_to_half(f.f);
22 
23       if (h != rh && !(util_is_half_nan(h) && util_is_half_nan(rh))) {
24          printf("Roundtrip failed: %x -> %x = %f -> %x\n", h, f.ui, f.f, rh);
25          ++roundtrip_fails;
26       }
27    }
28 
29    if(roundtrip_fails)
30       printf("Failure! %u/65536 half floats failed a conversion to float and back.\n", roundtrip_fails);
31    else
32       printf("Success!\n");
33 
34    return 0;
35 }
36