X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;ds=sidebyside;f=functions%2Fstring%2Fmemcpy.c;h=b2606b7222af7e87476d5a3e7718fa4631f99f10;hb=8f2e7cffffecca3d7c937be102fcf9d5ec17241c;hp=d0da5567a018c7b947de9b372a6d2ba20cce5a4d;hpb=dcc8a8e99f69e090a03b7b868443addbc0817820;p=pdclib.old

diff --git a/functions/string/memcpy.c b/functions/string/memcpy.c
index d0da556..b2606b7 100644
--- a/functions/string/memcpy.c
+++ b/functions/string/memcpy.c
@@ -1,8 +1,40 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-void * memcpy( void * restrict s1, const void * restrict s2, size_t n ) { /* TODO */ };
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* memcpy( void *, const void *, size_t )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <_PDCLIB_aux.h>
+#include <string.h>
+
+void * memcpy( void * _PDCLIB_restrict s1, const void * _PDCLIB_restrict s2, size_t n )
+{
+    char * dest = (char *) s1;
+    const char * src = (const char *) s2;
+    while ( n-- )
+    {
+        *dest++ = *src++;
+    }
+    return s1;
+}
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+    char s[] = "xxxxxxxxxxx";
+    BEGIN_TESTS;
+    TESTCASE( memcpy( s, abcde, 6 ) == s );
+    TESTCASE( s[4] == 'e' );
+    TESTCASE( s[5] == '\0' );
+    TESTCASE( memcpy( s + 5, abcde, 5 ) == s + 5 );
+    TESTCASE( s[9] == 'e' );
+    TESTCASE( s[10] == 'x' );
+    return TEST_RESULTS;
+}
+#endif