1 files changed, 22 insertions, 0 deletions

diff --git a/str_rchr.c b/str_rchr.c
new file mode 100644
index 0000000..1bf19d3
--- /dev/null
+++ b/str_rchr.c
@@ -0,0 +1,22 @@
+#include "str.h"
+
+unsigned int str_rchr(s,c)
+register char *s;
+int c;
+{
+  register char ch;
+  register char *t;
+  register char *u;
+
+  ch = c;
+  t = s;
+  u = 0;
+  for (;;) {
+    if (!*t) break; if (*t == ch) u = t; ++t;
+    if (!*t) break; if (*t == ch) u = t; ++t;
+    if (!*t) break; if (*t == ch) u = t; ++t;
+    if (!*t) break; if (*t == ch) u = t; ++t;
+  }
+  if (!u) u = t;
+  return u - s;
+}