strneqvcmp(3) compare two strings with an equivalence mapping

SYNOPSIS

#include <your-opts.h>
cc [...] -o outfile infile.c -lopts [...]

int strneqvcmp(char const * str1, char const * str2, int ct);

DESCRIPTION

Using a character mapping, two strings are compared for "equivalence". Each input character is mapped to a comparison character and the mapped-to characters are compared for the two NUL terminated input strings. The comparison is limited to ct bytes. This function name is mapped to option_strneqvcmp so as to not conflict with the POSIX name space.
str1
first string
str2
second string
ct
compare length

RETURN VALUE

the difference between two differing characters

ERRORS

none checked. Caller responsible for seg faults.