1 files changed, 30 insertions, 0 deletions
diff --git a/src/string/strrchr.c b/src/string/strrchr.c
new file mode 100644
index 00000000..0427aa66
--- /dev/null
+++ b/src/string/strrchr.c
@@ -0,0 +1,30 @@
+#include <string.h>
+#include "nonstd/assert.h"
+
+/** search string from end **/
+char * strrchr(const char *s, int c)
+{
+	int i = 0;
+
+	ASSERT_NONNULL(s);
+
+	for (i = strlen(s) + 1; i >= 0; i--) {
+		if (s[i] == (char)c) {
+			return (char*)s + i;
+		}
+	}
+
+	/*
+	RETURN_SUCCESS(a pointer to the found character);
+	RETURN_FAILURE(CONSTANT(NULL));
+	*/
+	return NULL;
+}
+
+/***
+finds the last occurence of ARGUMENT(c) (converted to TYPE(char)) in the
+string ARGUMENT(s).
+***/
+/*
+STDC(1)
+*/