libiberty/bcmp.c

   1 /* bcmp
   2    This function is in the public domain.  */
   3
   4 /*
   5
   6 NAME
   7
   8         bcmp -- compare two memory regions
   9
  10 SYNOPSIS
  11
  12         int bcmp (char *from, char *to, int count)
  13
  14 DESCRIPTION
  15
  16         Compare two memory regions and return zero if they are identical,
  17         non-zero otherwise.  If count is zero, return zero.
  18
  19 NOTES
  20
  21         No guarantee is made about the non-zero returned value.  In
  22         particular, the results may be signficantly different than
  23         strcmp(), where the return value is guaranteed to be less than,
  24         equal to, or greater than zero, according to lexicographical
  25         sorting of the compared regions.
  26
  27 BUGS
  28
  29 */
  30
  31
  32 int
  33 bcmp (from, to, count)
  34   char *from, *to;
  35   int count;
  36 {
  37   int rtnval = 0;
  38
  39   while (count-- > 0)
  40     {
  41       if (*from++ != *to++)
  42         {
  43           rtnval = 1;
  44           break;
  45         }
  46     }
  47   return (rtnval);
  48 }
  49