use malachite_base::num::arithmetic::traits::Parity;
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_unsigned_pair_gen, unsigned_pair_gen};
#[test]
fn test_wrapping_pow() {
fn test<T: PrimitiveInt>(x: T, y: u64, out: T) {
assert_eq!(x.wrapping_pow(y), out);
let mut x = x;
x.wrapping_pow_assign(y);
assert_eq!(x, out);
}
test::<u8>(0, 0, 1);
test::<u64>(123, 0, 1);
test::<u64>(123, 1, 123);
test::<u16>(0, 123, 0);
test::<u16>(1, 123, 1);
test::<i16>(-1, 123, -1);
test::<i16>(-1, 124, 1);
test::<u8>(3, 3, 27);
test::<i32>(-10, 9, -1000000000);
test::<i32>(-10, 10, 1410065408);
test::<i16>(-10, 9, 13824);
test::<i16>(10, 9, -13824);
test::<i64>(123, 456, 2409344748064316129);
test::<u64>(0, u64::MAX, 0);
test::<u64>(1, u64::MAX, 1);
test::<u64>(123, u64::MAX, 3449391168254631603);
test::<i64>(0, u64::MAX, 0);
test::<i64>(1, u64::MAX, 1);
test::<i64>(-1, u64::MAX, -1);
test::<i64>(-1, u64::MAX - 1, 1);
test::<i64>(123, u64::MAX, 3449391168254631603);
test::<i64>(-123, u64::MAX, -3449391168254631603);
test::<i64>(-123, u64::MAX - 1, 4527249702272692521);
}
fn wrapping_pow_properties_helper_unsigned<T: PrimitiveUnsigned>() {
unsigned_pair_gen::<T, u64>().test_properties(|(x, y)| {
let mut power = x;
power.wrapping_pow_assign(y);
assert_eq!(power, x.wrapping_pow(y));
});
}
fn wrapping_pow_properties_helper_signed<T: PrimitiveSigned>() {
signed_unsigned_pair_gen::<T, u64>().test_properties(|(x, y)| {
let mut power = x;
power.wrapping_pow_assign(y);
assert_eq!(power, x.wrapping_pow(y));
if x != T::MIN {
let neg_pow = (-x).wrapping_pow(y);
if y.even() {
assert_eq!(neg_pow, power);
} else {
assert_eq!(neg_pow, power.wrapping_neg());
}
}
});
}
#[test]
fn wrapping_pow_properties() {
apply_fn_to_unsigneds!(wrapping_pow_properties_helper_unsigned);
apply_fn_to_signeds!(wrapping_pow_properties_helper_signed);
}