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/strlwr.c

@@ -0,0 +1,46 @@
+/*
+FUNCTION
+	<<strlwr>>---force string to lowercase
+	
+INDEX
+	strlwr
+
+ANSI_SYNOPSIS
+	#include <string.h>
+	char *strlwr(char *<[a]>);
+
+TRAD_SYNOPSIS
+	#include <string.h>
+	char *strlwr(<[a]>)
+	char *<[a]>;
+
+DESCRIPTION
+	<<strlwr>> converts each character in the string at <[a]> to
+	lowercase.
+
+RETURNS
+	<<strlwr>> returns its argument, <[a]>.
+
+PORTABILITY
+<<strlwr>> is not widely portable.
+
+<<strlwr>> requires no supporting OS subroutines.
+
+QUICKREF
+	strlwr
+*/
+
+#include <string.h>
+#include <ctype.h>
+
+char *
+_DEFUN (strlwr, (s),
+	char *s)
+{
+  unsigned char *ucs = (unsigned char *) s;
+  for ( ; *ucs != '\0'; ucs++)
+    {
+      *ucs = tolower(*ucs);
+    }
+  return s;
+}