checker: check devision by zero (int and float)

vlib/v/checker/checker.v

@@ -366,8 +366,9 @@ pub fn (mut c Checker) infix_expr(infix_expr mut ast.InfixExpr) table.Type {
 			return table.bool_type
 		}
 		.plus, .minus, .mul, .div {
-			if infix_expr.op == .div && infix_expr.right is ast.IntegerLiteral &&
-				 infix_expr.right.str().int() == 0 {
+			if infix_expr.op == .div &&
+				(infix_expr.right is ast.IntegerLiteral && infix_expr.right.str() == '0' ||
+				infix_expr.right is ast.FloatLiteral && infix_expr.right.str().f64() == 0.0) {
 				c.error('division by zero', infix_expr.right.position())
 			}
 			if left.kind in [.array, .array_fixed, .map, .struct_] && !left.has_method(infix_expr.op.str()) {

vlib/v/checker/tests/division_by_zero_err.out

@@ -1,5 +0,0 @@
-vlib/v/checker/tests/division_by_zero_err.v:2:12: error: division by zero
-    1| fn main() {
-    2|     println(1/0)
-                     ^
-    3| }

vlib/v/checker/tests/division_by_zero_float_err.out

@@ -0,0 +1,5 @@
+vlib/v/checker/tests/division_by_zero_float_err.v:2:14: error: division by zero
+    1| fn main() {
+    2|     println(1.0/0.0)
+                       ~~~
+    3| }

vlib/v/checker/tests/division_by_zero_float_err.v

@@ -0,0 +1,3 @@
+fn main() {
+	println(1.0/0.0)
+}

vlib/v/checker/tests/division_by_zero_float_err.vv

@@ -0,0 +1,3 @@
+fn main() {
+	println(1.0/0.0)
+}

vlib/v/checker/tests/division_by_zero_int_err.out

@@ -0,0 +1,5 @@
+vlib/v/checker/tests/division_by_zero_int_err.v:2:12: error: division by zero
+    1| fn main() {
+    2|     println(1/0)
+                     ^
+    3| }

vlib/v/checker/tests/division_by_zero_int_err.vv

@@ -0,0 +1,3 @@
+fn main() {
+	println(1/0)
+}