X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=platform%2Faltos%2Ffunctions%2Fctype%2Ftolower.c;fp=platform%2Faltos%2Ffunctions%2Fctype%2Ftolower.c;h=44909e85efe703adcc2e0f18eabb4680fe7d3202;hb=d58957de3e0b9b7076a6f5dd49d5df8e78f5a826;hp=0000000000000000000000000000000000000000;hpb=6225e295ec21ab2e47ab4cd153921221bc05a2b0;p=fw%2Fpdclib

diff --git a/platform/altos/functions/ctype/tolower.c b/platform/altos/functions/ctype/tolower.c
new file mode 100644
index 0000000..44909e8
--- /dev/null
+++ b/platform/altos/functions/ctype/tolower.c
@@ -0,0 +1,37 @@
+/* $Id$ */
+
+/* tolower( int )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <ctype.h>
+
+#ifndef REGTEST
+
+#include <locale.h>
+
+int tolower( int c )
+{
+	if ('A' <= c && c <= 'Z')
+		c = c + 'a' - 'A';
+	return c;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( tolower( 'A' ) == 'a' );
+    TESTCASE( tolower( 'Z' ) == 'z' );
+    TESTCASE( tolower( 'a' ) == 'a' );
+    TESTCASE( tolower( 'z' ) == 'z' );
+    TESTCASE( tolower( '@' ) == '@' );
+    TESTCASE( tolower( '[' ) == '[' );
+    return TEST_RESULTS;
+}
+#endif