0,0 → 1,64 |
/* |
FUNCTION |
<<wcsncasecmp>>---case-insensitive wide character string compare |
|
INDEX |
wcsncasecmp |
|
ANSI_SYNOPSIS |
#include <wchar.h> |
int wcsncasecmp(const wchar_t *<[a]>, const wchar_t * <[b]>, size_t <[length]>); |
|
TRAD_SYNOPSIS |
#include <wchar.h> |
int wcsncasecmp(<[a]>, <[b]>, <[length]>) |
wchar_t *<[a]>; |
wchar_t *<[b]>; |
size_t <[length]> |
|
DESCRIPTION |
<<wcsncasecmp>> compares up to <[length]> wide characters |
from the string at <[a]> to the string at <[b]> in a |
case-insensitive manner. |
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RETURNS |
|
If <<*<[a]>>> sorts lexicographically after <<*<[b]>>> (after |
both are converted to uppercase), <<wcsncasecmp>> returns a |
number greater than zero. If the two strings are equivalent, |
<<wcsncasecmp>> returns zero. If <<*<[a]>>> sorts |
lexicographically before <<*<[b]>>>, <<wcsncasecmp>> returns a |
number less than zero. |
|
PORTABILITY |
POSIX-1.2008 |
|
<<wcsncasecmp>> requires no supporting OS subroutines. It uses |
tolower() from elsewhere in this library. |
|
QUICKREF |
wcsncasecmp |
*/ |
|
#include <wchar.h> |
#include <wctype.h> |
|
int |
_DEFUN (wcsncasecmp, (s1, s2, n), |
_CONST wchar_t *s1 _AND |
_CONST wchar_t *s2 _AND |
size_t n) |
{ |
if (n == 0) |
return 0; |
|
while (n-- != 0 && towlower(*s1) == towlower(*s2)) |
{ |
if (n == 0 || *s1 == '\0' || *s2 == '\0') |
break; |
s1++; |
s2++; |
} |
|
return towlower(*s1) - towlower(*s2); |
} |