1 files changed, 22 insertions, 0 deletions
diff --git a/ruby_1_8_6/missing/memmove.c b/ruby_1_8_6/missing/memmove.c
new file mode 100644
index 0000000000..c9d67d8b45
--- /dev/null
+++ b/ruby_1_8_6/missing/memmove.c
@@ -0,0 +1,22 @@
+/* public domain rewrite of memcmp(3) */
+
+void *
+memmove (d, s, n)
+    void *d, *s;
+    int n;
+{
+    char *dst = d;
+    char *src = s;
+    void *ret = dst;
+
+    if (src < dst) {
+	src += n;
+	dst += n;
+	while (n--)
+	    *--dst = *--src;
+    }
+    else if (dst < src)
+	while (n--)
+	    *dst++ = *src++;
+    return ret;
+}