The
strcasecmp();
and
strncasecmp();
functions compare the NUL-terminated strings
s1
and
s2
and return an integer greater than, equal to, or less than 0,
according to whether
s1
is lexicographically greater than, equal to, or less than
s2
after translation of each corresponding character to lower-case.
The strings themselves are not modified.
The comparison is done using unsigned characters, so that
\e200
is greater than
"\e0".
strncasecmp();
compares at most
len
characters.