// 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::floats::PrimitiveFloat;
use malachite_base::num::basic::integers::PrimitiveInt;
use malachite_base::num::basic::signeds::PrimitiveSigned;
use malachite_base::num::basic::traits::NegativeInfinity;
use malachite_base::num::basic::unsigneds::PrimitiveUnsigned;
use malachite_base::num::float::NiceFloat;
use malachite_base::test_util::generators::{
primitive_float_triple_gen, signed_pair_gen, signed_triple_gen_var_2, unsigned_pair_gen_var_27,
unsigned_triple_gen_var_2,
};
#[test]
fn test_sub_mul() {
fn test_i(x: T, y: T, z: T, out: T) {
assert_eq!(x.sub_mul(y, z), out);
let mut x = x;
x.sub_mul_assign(y, z);
assert_eq!(x, out);
}
test_i::(100, 3, 7, 79);
test_i::(60, 5, 10, 10);
test_i::(1000000, 456, 789, 640216);
test_i::(123, -456, 789, 359907);
test_i::(-123, 456, 789, -359907);
test_i::(127, 2, 100, -73);
test_i::(-127, -2, 100, 73);
test_i::(-128, 1, 0, -128);
fn test_f(x: T, y: T, z: T, out: T) {
assert_eq!(NiceFloat(x.sub_mul(y, z)), NiceFloat(out));
let mut x = x;
x.sub_mul_assign(y, z);
assert_eq!(NiceFloat(x), NiceFloat(out));
}
test_f::(1.0, 2.0, 3.0, -5.0);
test_f::(1.0, f32::INFINITY, 2.0, f32::NEGATIVE_INFINITY);
test_f::(f32::NAN, 1.0, 2.0, f32::NAN);
}
fn sub_mul_properties_helper_unsigned() {
unsigned_triple_gen_var_2::().test_properties(|(x, y, z)| {
let result = x.sub_mul(y, z);
let mut x_alt = x;
x_alt.sub_mul_assign(y, z);
assert_eq!(x_alt, result);
assert_eq!(x.sub_mul(z, y), result);
assert_eq!(result.add_mul(y, z), x);
assert_eq!(x.checked_sub_mul(y, z), Some(result));
assert_eq!(x.saturating_sub_mul(y, z), result);
assert_eq!(x.wrapping_sub_mul(y, z), result);
assert_eq!(x.overflowing_sub_mul(y, z), (result, false));
});
unsigned_pair_gen_var_27::().test_properties(|(a, b)| {
assert_eq!(a.sub_mul(T::ZERO, b), a);
assert_eq!(a.sub_mul(b, T::ZERO), a);
});
}
fn sub_mul_properties_helper_signed() {
signed_triple_gen_var_2::().test_properties(|(x, y, z)| {
let result = x.sub_mul(y, z);
let mut x_alt = x;
x_alt.sub_mul_assign(y, z);
assert_eq!(x_alt, result);
assert_eq!(x.sub_mul(z, y), result);
assert_eq!(result.add_mul(y, z), x);
assert_eq!(x.checked_sub_mul(y, z), Some(result));
assert_eq!(x.saturating_sub_mul(y, z), result);
assert_eq!(x.wrapping_sub_mul(y, z), result);
assert_eq!(x.overflowing_sub_mul(y, z), (result, false));
});
signed_pair_gen::().test_properties(|(a, b)| {
assert_eq!(a.sub_mul(T::ZERO, b), a);
assert_eq!(a.sub_mul(b, T::ZERO), a);
});
}
fn sub_mul_properties_helper_primitive_float() {
primitive_float_triple_gen::().test_properties(|(x, y, z)| {
let result = x.sub_mul(y, z);
let mut x_alt = x;
x_alt.sub_mul_assign(y, z);
assert_eq!(NiceFloat(x_alt), NiceFloat(result));
assert_eq!(NiceFloat(x.sub_mul(z, y)), NiceFloat(result));
});
}
#[test]
fn sub_mul_properties() {
apply_fn_to_unsigneds!(sub_mul_properties_helper_unsigned);
apply_fn_to_signeds!(sub_mul_properties_helper_signed);
apply_fn_to_primitive_floats!(sub_mul_properties_helper_primitive_float);
}