0,0 → 1,60 |
/* |
FUNCTION |
<<strcasecmp>>---case-insensitive character string compare |
|
INDEX |
strcasecmp |
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ANSI_SYNOPSIS |
#include <strings.h> |
int strcasecmp(const char *<[a]>, const char *<[b]>); |
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TRAD_SYNOPSIS |
#include <strings.h> |
int strcasecmp(<[a]>, <[b]>) |
char *<[a]>; |
char *<[b]>; |
|
DESCRIPTION |
<<strcasecmp>> compares 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 lowercase), <<strcasecmp>> returns a |
number greater than zero. If the two strings match, |
<<strcasecmp>> returns zero. If <<*<[a]>>> sorts |
lexicographically before <<*<[b]>>>, <<strcasecmp>> returns a |
number less than zero. |
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PORTABILITY |
<<strcasecmp>> is in the Berkeley Software Distribution. |
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<<strcasecmp>> requires no supporting OS subroutines. It uses |
tolower() from elsewhere in this library. |
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QUICKREF |
strcasecmp |
*/ |
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#include <strings.h> |
#include <ctype.h> |
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int |
_DEFUN (strcasecmp, (s1, s2), |
_CONST char *s1 _AND |
_CONST char *s2) |
{ |
_CONST unsigned char *ucs1 = (_CONST unsigned char *) s1; |
_CONST unsigned char *ucs2 = (_CONST unsigned char *) s2; |
int d = 0; |
for ( ; ; ) |
{ |
_CONST int c1 = tolower(*ucs1++); |
_CONST int c2 = tolower(*ucs2++); |
if (((d = c1 - c2) != 0) || (c2 == '\0')) |
break; |
} |
return d; |
} |