1 files changed, 41 insertions, 0 deletions
diff --git a/src/pdclib/functions/string/strrchr.c b/src/pdclib/functions/string/strrchr.c
new file mode 100644
index 0000000..c2369fa
--- /dev/null
+++ b/src/pdclib/functions/string/strrchr.c
@@ -0,0 +1,41 @@
+/* strrchr( const char *, int )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+#ifndef REGTEST
+
+char * strrchr( const char * s, int c )
+{
+    size_t i = 0;
+    while ( s[i++] );
+    do
+    {
+        if ( s[--i] == (char) c )
+        {
+            return (char *) s + i;
+        }
+    } while ( i );
+    return NULL;
+}
+
+#endif
+
+#ifdef TEST
+
+#include "_PDCLIB_test.h"
+
+int main( void )
+{
+    char abccd[] = "abccd";
+    TESTCASE( strrchr( abcde, '\0' ) == &abcde[5] );
+    TESTCASE( strrchr( abcde, 'e' ) == &abcde[4] );
+    TESTCASE( strrchr( abcde, 'a' ) == &abcde[0] );
+    TESTCASE( strrchr( abccd, 'c' ) == &abccd[3] );
+    return TEST_RESULTS;
+}
+
+#endif