strcasestr
Name
strcasestr -- locate a substring ignoring case
Synopsis
char
*strcasestr
(const char
*s1, const char
*s2);
Description
The strcasestr
shall behave as
strstr
,
except that it shall ignore the case of both strings.
The strcasestr
function shall be locale aware;
that is strcasestr
shall behave as if both
strings had been converted to lower case in the current locale
before the comparison is performed.
Return Value
Upon successful completion,
strcasestr
shall return a pointer to the located
string or a null pointer if the string is not found.
If s2 points to a string
with zero length, the function shall return s1.