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      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
      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