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-rw-r--r--newlib/libc/string/wcscasecmp.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/newlib/libc/string/wcscasecmp.c b/newlib/libc/string/wcscasecmp.c
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+++ b/newlib/libc/string/wcscasecmp.c
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+/*
+FUNCTION
+ <<wcscasecmp>>---case-insensitive wide character string compare
+
+INDEX
+ wcscasecmp
+
+ANSI_SYNOPSIS
+ #include <wchar.h>
+ int wcscasecmp(const wchar_t *<[a]>, const wchar_t *<[b]>);
+
+TRAD_SYNOPSIS
+ #include <wchar.h>
+ int wcscasecmp(<[a]>, <[b]>)
+ wchar_t *<[a]>;
+ wchar_t *<[b]>;
+
+DESCRIPTION
+ <<wcscasecmp>> compares the wide character string at <[a]> to
+ the wide character string at <[b]> in a case-insensitive manner.
+
+RETURNS
+
+ If <<*<[a]>>> sorts lexicographically after <<*<[b]>>> (after
+ both are converted to uppercase), <<wcscasecmp>> returns a
+ number greater than zero. If the two strings match,
+ <<wcscasecmp>> returns zero. If <<*<[a]>>> sorts
+ lexicographically before <<*<[b]>>>, <<wcscasecmp>> returns a
+ number less than zero.
+
+PORTABILITY
+POSIX-1.2008
+
+<<wcscasecmp>> requires no supporting OS subroutines. It uses
+tolower() from elsewhere in this library.
+
+QUICKREF
+ wcscasecmp
+*/
+
+#include <wchar.h>
+#include <wctype.h>
+
+int
+_DEFUN (wcscasecmp, (s1, s2),
+ _CONST wchar_t *s1 _AND
+ _CONST wchar_t *s2)
+{
+ while (*s1 != '\0' && towlower(*s1) == towlower(*s2))
+ {
+ s1++;
+ s2++;
+ }
+
+ return towlower(*s1) - towlower(*s2);
+}