1 #define _GNU_SOURCE

     2 #include <stdint.h>

     3 #include <stdio.h>

     4 #include <math.h>

     5 

     6 int main (void)

     7 {

     8     double d;

     9     uint8_t n;

    10     int i;

    11 

    12     printf("static const uint8_t mfrom_ROM_table[602] =\n{\n    ");

    13     for (i = 0; i < 602; i++) {

    14         /* Extremly decomposed:

    15          *                    -T0 / 256

    16          * T0 = 256 * log10(10          + 1.0) + 0.5

    17          */

    18         d = -i;

    19         d /= 256.0;

    20         d = exp10(d);

    21         d += 1.0;

    22         d = log10(d);

    23         d *= 256;

    24         d += 0.5;

    25         n = d;

    26         printf("%3d, ", n);

    27         if ((i & 7) == 7)

    28             printf("\n    ");

    29     }

    30     printf("\n};\n");

    31 

    32     return 0;

    33 }