X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fctype%2Ftolower.c;h=fa9fbf5b9188ab59968ea2c5ca1036d8b2eedae2;hb=d6f1494a4f38a212b29a13ee713885058dcf0fe7;hp=28c435ded8377d125f49ece8b5a8c8b2767007d4;hpb=5bcc00c1b85feff1996e3f34a1a9ebf3b624161e;p=pdclib

diff --git a/functions/ctype/tolower.c b/functions/ctype/tolower.c
index 28c435d..fa9fbf5 100644
--- a/functions/ctype/tolower.c
+++ b/functions/ctype/tolower.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
 /* tolower( int )
 
    This file is part of the Public Domain C Library (PDCLib).
@@ -10,19 +8,17 @@
 
 #ifndef REGTEST
 
+#include <locale.h>
+
 int tolower( int c )
 {
-    if ( ( c >= 'A' ) && ( c <= 'Z' ) )
-    {
-        c += ( 'a' - 'A' );
-    }
-    return c;
+    return _PDCLIB_lconv.ctype[c].lower;
 }
 
 #endif
 
 #ifdef TEST
-#include <_PDCLIB_test.h>
+#include "_PDCLIB_test.h"
 
 int main( void )
 {