target-ppc/mfrom_table_gen.c

   1 #define _GNU_SOURCE
   2 #include "qemu/osdep.h"
   3 #include <math.h>
   4
   5 int main (void)
   6 {
   7     double d;
   8     uint8_t n;
   9     int i;
  10
  11     printf("static const uint8_t mfrom_ROM_table[602] =\n{\n    ");
  12     for (i = 0; i < 602; i++) {
  13         /* Extremely decomposed:
  14          *                    -T0 / 256
  15          * T0 = 256 * log10(10          + 1.0) + 0.5
  16          */
  17         d = -i;
  18         d /= 256.0;
  19         d = exp10(d);
  20         d += 1.0;
  21         d = log10(d);
  22         d *= 256;
  23         d += 0.5;
  24         n = d;
  25         printf("%3d, ", n);
  26         if ((i & 7) == 7)
  27             printf("\n    ");
  28     }
  29     printf("\n};\n");
  30
  31     return 0;
  32 }