src/libstddjb/ucharn_fmt.c


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/* ISC license. */

#include <sys/types.h>
#include <skalibs/fmtscan.h>

size_t ucharn_fmt (char *s, char const *key, size_t n)
{
  register size_t i = 0 ;
  for (; i < n ; i++)
  {
    s[i<<1] = fmtscan_asc((unsigned char)key[i] >> 4) ;
    s[(i<<1)+1] = fmtscan_asc((unsigned char)key[i] & 0xF) ;
  }
  return n << 1 ;
}