feat(Evaluator): add modulus operator

tests/test.c

@@ -8,9 +8,9 @@
 int main()
 {
     printf("== UNIT TESTS == \n");
+    test_utils();
     test_var_store();
     test_stack();
-    test_utils();
     test_evaluation();
     test_line_processing();
 }

tests/test_evaluation.c

@@ -133,4 +133,12 @@ void test_evaluation()
     evaluate(state, "5 > 0", &resVal, &resType);
     assert(resType == TYPE_INT);
     assert(1 == resVal);
+
+    evaluate(state, "5 % 10", &resVal, &resType);
+    assert(resType == TYPE_INT);
+    assert(5 == resVal);
+
+    evaluate(state, "5.3 % 10", &resVal, &resType);
+    assert(resType == TYPE_FLOAT);
+    assert(float_almost_equal(5.3, get_float_from_int_rep(resVal)));
 }

tests/test_utils.c

@@ -39,6 +39,9 @@ void test_utils()
     assert(m_factorial(3) == 6);
     assert(m_factorial(4) == 2*3*4);
 
+    assert(float_almost_equal(2.22, m_float_modulus(2.22, 10)));
+    assert(float_almost_equal(28.619, m_float_modulus(200.22, 34.32)));
+
     assert(float_almost_equal(2.7182, m_exp(1.0)));
     assert(float_almost_equal(1, m_exp(0)));