newlib-2.4.0: wide character strings

git-svn-id: svn://kolibrios.org@6557 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/newlib/libc/string/wcschr.c

@@ -0,0 +1,82 @@
+/*
+FUNCTION
+	<<wcschr>>---wide-character string scanning operation
+
+ANSI_SYNOPSIS
+	#include <wchar.h>
+	wchar_t *wcschr(const wchar_t *<[s]>, wchar_t <[c]>);
+
+TRAD_SYNOPSIS
+	wchar_t *wcschr(<[s]>, <[c]>
+	const wchar_t *<[s]>;
+	wchar_t <[c]>;
+
+DESCRIPTION
+	The <<wcschr>> function locates the first occurrence of <[c]> in the
+	wide-character string pointed to by <[s]>. The value of <[c]> must be a
+	character representable as a type wchar_t and must be a wide-character
+	code corresponding to a valid character in the current locale.
+	The terminating null wide-character string.
+
+RETURNS
+	Upon completion, <<wcschr>> returns a pointer to the wide-character
+	code, or a null pointer if the wide-character code is not found. 
+
+PORTABILITY
+<<wcschr>> is ISO/IEC 9899/AMD1:1995 (ISO C).
+
+No supporting OS subroutines are required.
+*/
+
+/*	$NetBSD: wcschr.c,v 1.1 2000/12/23 23:14:36 itojun Exp $	*/
+
+/*-
+ * Copyright (c)1999 Citrus Project,
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	citrus Id: wcschr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
+ */
+
+#include <_ansi.h>
+#include <stddef.h>
+#include <wchar.h>
+
+wchar_t *
+_DEFUN (wcschr, (s, c),
+	_CONST wchar_t * s _AND
+	wchar_t c)
+{
+  _CONST wchar_t *p;
+
+  p = s;
+  do
+    {
+      if (*p == c)
+	{
+	  /* LINTED interface specification */
+	  return (wchar_t *) p;
+	}
+    } while (*p++);
+  return NULL;
+}