ring/arithmetic/n0.rs
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// Copyright 2015-2022 Brian Smith.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use crate::limb::Limb;
#[derive(Clone)]
#[repr(transparent)]
pub(in super::super) struct N0([Limb; 2]);
impl N0 {
#[cfg(feature = "alloc")]
pub(super) const LIMBS_USED: usize = 64 / crate::limb::LIMB_BITS;
}
impl From<u64> for N0 {
#[inline]
fn from(n0: u64) -> Self {
#[cfg(target_pointer_width = "64")]
{
Self([n0, 0])
}
#[cfg(target_pointer_width = "32")]
{
Self([n0 as Limb, (n0 >> crate::limb::LIMB_BITS) as Limb])
}
}
}