mod add;
pub mod div;
mod gcd;
mod mul;
mod mul_redc;
mod ops;
mod shift;
pub use self::{
div::div,
gcd::{gcd, gcd_extended, inv_mod, LehmerMatrix},
mul::{addmul, addmul_n, addmul_nx1, submul_nx1},
mul_redc::mul_redc,
shift::{shift_left_small, shift_right_small},
};
trait DoubleWord<T>: Sized + Copy {
fn join(high: T, low: T) -> Self;
fn add(a: T, b: T) -> Self;
fn mul(a: T, b: T) -> Self;
fn muladd(a: T, b: T, c: T) -> Self;
fn muladd2(a: T, b: T, c: T, d: T) -> Self;
fn high(self) -> T;
fn low(self) -> T;
fn split(self) -> (T, T);
}
impl DoubleWord<u64> for u128 {
#[inline(always)]
fn join(high: u64, low: u64) -> Self {
(Self::from(high) << 64) | Self::from(low)
}
#[inline(always)]
fn add(a: u64, b: u64) -> Self {
Self::from(a) + Self::from(b)
}
#[inline(always)]
fn mul(a: u64, b: u64) -> Self {
Self::from(a) * Self::from(b)
}
#[inline(always)]
fn muladd(a: u64, b: u64, c: u64) -> Self {
Self::from(a) * Self::from(b) + Self::from(c)
}
#[inline(always)]
fn muladd2(a: u64, b: u64, c: u64, d: u64) -> Self {
Self::from(a) * Self::from(b) + Self::from(c) + Self::from(d)
}
#[inline(always)]
fn high(self) -> u64 {
(self >> 64) as u64
}
#[inline(always)]
#[allow(clippy::cast_possible_truncation)]
fn low(self) -> u64 {
self as u64
}
#[inline(always)]
fn split(self) -> (u64, u64) {
(self.low(), self.high())
}
}
#[cfg(feature = "bench")]
#[doc(hidden)]
pub mod bench {
use super::*;
use criterion::Criterion;
pub fn group(criterion: &mut Criterion) {
mul::bench::group(criterion);
div::bench::group(criterion);
gcd::bench::group(criterion);
}
}