byte_rchr - search for a byte in a string

byte_chr returns the largest integer i between 0 and len-1 inclusive such that one[i] equals needle.

       If no such integer exists, byte_chr returns len.

       byte_rchr  may  read all bytes one[0], one[1], ..., one[len-1], even if not all the bytes are relevant to
       the answer.

       byte_rchr - search for a byte in a string

byte_chr(3)

                                                                                                    byte_rchr(3)

#include<libowfat/byte.h>

       size_t byte_rchr(const char *haystack,size_t len,char needle);