1 #include "case.h"

     2 

     3 void case_lowerb(s,len)

     4 char *s;

     5 unsigned int len;

     6 {

     7   unsigned char x;

     8   while (len > 0) {

     9     --len;

    10     x = *s - 'A';

    11     if (x <= 'Z' - 'A') *s = x + 'a';

    12     ++s;

    13   }

    14 }