int strcasecmp(const char *, const char *) __ATTR_PURE__
The strcasecmp() function compares the two strings s1
and s2
, ignoring the case of the characters.
The strcasecmp() function returns an integer less than, equal to, or greater than zero if s1
is found, respectively, to be less than, to match, or be greater than s2
. A consequence of the ordering used by strcasecmp() is that if s1
is an initial substring of s2
, then s1
is considered to be "less than" s2
.