X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fmemmove.c;h=7a1cf7a29d90aa7a35f643be51a50ab1d2d7d0b2;hb=8c7d580ffac32921f34f4d254cf36cf872dafc7f;hp=9ecce5db20fa32741d4ab4164fa6214a38d3dde9;hpb=dcc8a8e99f69e090a03b7b868443addbc0817820;p=pdclib.old

diff --git a/functions/string/memmove.c b/functions/string/memmove.c
index 9ecce5d..7a1cf7a 100644
--- a/functions/string/memmove.c
+++ b/functions/string/memmove.c
@@ -5,4 +5,27 @@
 // This code is Public Domain. Use, modify, and redistribute at will.
 // ----------------------------------------------------------------------------
 
-void * memmove( void * s1, const void * s2, size_t n ) { /* TODO */ };
+#include <string.h>
+
+void * memmove( void * dest, const void * src, size_t n )
+{
+    const char * src_p = (const char *) src;
+    char * dest_p = (char *) dest;
+    if ( dest_p < src_p )
+    {
+        while ( n-- )
+        {
+            *dest_p++ = *src_p++;
+        }
+    }
+    else
+    {
+        src_p += n;
+        dest_p += n;
+        while ( n-- )
+        {
+            *dest_p-- = *src_p--;
+        }
+    }
+    return dest;
+}