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