Added fmod for modulus of two floats

math/math.v

@@ -35,6 +35,10 @@ fn floor(a f64) f64 {
 	return C.floor(a)
 }
 
+fn fmod(a, b f64) f64 {
+	return C.fmod(a, b);
+}
+
 fn log(a f64) f64 {
 	return C.log(a)
 }