@@ -1,12 +1,18 @@

 #include <ctype.h>

-double match(const char *needle, const char *haystack){

+static int is_subset(const char *needle, const char *haystack){

 	while(*needle){

 		if(!*haystack)

-			return 0.0;

-		while(*haystack && tolower(*needle) == tolower(*haystack++)){

+			return 0;

+		while(*haystack && tolower(*needle) == tolower(*haystack++))

 			needle++;

-		}

+	}

+	return 1;

+}

+

+double match(const char *needle, const char *haystack){

+	if(!is_subset(needle, haystack)){

+		return 0.0;

 	}

 	return 1.0;

 }