diff -r 000000000000 -r c045670f36e9 byte_rchr.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/byte_rchr.c	Thu Nov 01 14:46:11 2007 +0100
@@ -0,0 +1,23 @@
+#include "byte.h"
+
+unsigned int byte_rchr(s,n,c)
+char *s;
+register unsigned int n;
+int c;
+{
+  register char ch;
+  register char *t;
+  register char *u;
+
+  ch = c;
+  t = s;
+  u = 0;
+  for (;;) {
+    if (!n) break; if (*t == ch) u = t; ++t; --n;
+    if (!n) break; if (*t == ch) u = t; ++t; --n;
+    if (!n) break; if (*t == ch) u = t; ++t; --n;
+    if (!n) break; if (*t == ch) u = t; ++t; --n;
+  }
+  if (!u) u = t;
+  return u - s;
+}