1 files changed, 23 insertions, 0 deletions

diff --git a/byte_rchr.c b/byte_rchr.c
new file mode 100644
index 0000000..476bc22
--- /dev/null
+++ b/byte_rchr.c
@@ -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;
+}