mint bycmpr(byte1, byte2, length)
   char *byte1;
   char *byte2;
   mint length;

byte1

is a pointer to the location at which the first group of contiguous bytes starts.

byte2

is a pointer to the location at which the second group of contiguous bytes starts.

length

is the number of bytes to compare.

The bycmpr( ) function performs a byte-by-byte comparison of the two groups of contiguous bytes until it finds a difference or until it compares length number of bytes. The bycmpr( ) function returns an integer whose value (0, -1, or +1) indicates the result of the comparison between the two groups of bytes.

The bycmpr( ) function subtracts the bytes of the byte2 group from those of the byte1 group to accomplish the comparison.

0

The two groups are identical.

-1

The byte1 group is less than the byte2 group.

+1

The byte1 group is greater than the byte2 group.