// Copyright © 2024 Mikhail Hogrefe
//
// This file is part of Malachite.
//
// Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU
// Lesser General Public License (LGPL) as published by the Free Software Foundation; either version
// 3 of the License, or (at your option) any later version. See .
use malachite_base::num::basic::integers::PrimitiveInt;
use malachite_base::num::basic::signeds::PrimitiveSigned;
use malachite_base::num::basic::unsigneds::PrimitiveUnsigned;
use malachite_base::test_util::generators::{signed_pair_gen_var_6, unsigned_pair_gen_var_12};
use std::panic::catch_unwind;
#[test]
fn test_overflowing_div() {
fn test(x: T, y: T, out: T, overflow: bool) {
assert_eq!(x.overflowing_div(y), (out, overflow));
let mut x = x;
assert_eq!(x.overflowing_div_assign(y), overflow);
assert_eq!(x, out);
}
test::(0, 5, 0, false);
test::(123, 456, 0, false);
test::(100, 3, 33, false);
test::(100, -3, -33, false);
test::(-100, 3, -33, false);
test::(-100, -3, 33, false);
test::(-128, -1, -128, true);
}
fn overflowing_div_assign_fail_helper() {
assert_panic!({
let mut n = T::ONE;
n.overflowing_div_assign(T::ZERO);
});
}
#[test]
fn overflowing_div_assign_fail() {
apply_fn_to_primitive_ints!(overflowing_div_assign_fail_helper);
}
fn overflowing_div_properties_helper_unsigned() {
unsigned_pair_gen_var_12::().test_properties(|(x, y)| {
let mut quotient = x;
let overflow = quotient.overflowing_div_assign(y);
assert_eq!((quotient, overflow), x.overflowing_div(y));
assert_eq!(x.wrapping_div(y), quotient);
assert!(!overflow);
assert_eq!(quotient, x / y);
});
}
fn overflowing_div_properties_helper_signed() {
signed_pair_gen_var_6::().test_properties(|(x, y)| {
let mut quotient = x;
let overflow = quotient.overflowing_div_assign(y);
assert_eq!((quotient, overflow), x.overflowing_div(y));
assert_eq!(x.wrapping_div(y), quotient);
if !overflow {
assert_eq!(quotient, x / y);
}
});
}
#[test]
fn overflowing_div_properties() {
apply_fn_to_unsigneds!(overflowing_div_properties_helper_unsigned);
apply_fn_to_signeds!(overflowing_div_properties_helper_signed);
}