int
strcasecmp(
const char *s1
, const char *s2
)
int
strncasecmp(
const char *s1
, const char *s2
, size_t len
)
)
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
`
\200
'
is greater than
`\0'.
The
strncasecmp()
compares at most
len
characters.
)
and
strncasecmp(
)
functions first appeared in
4.4BSD.
len
is zero
strncasecmp(
)
returns always 0.