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use crate::P8E0; use core::mem; mod convert; mod math; mod ops; #[derive(Clone, Debug)] pub struct Q8E0(i32); impl Q8E0 { pub const ZERO: Self = Self(0); pub const ONE: Self = Self(0x_0000_1000); pub const NAR: Self = Self(-0x_8000_0000); #[inline] pub const fn init() -> Self { Self::ZERO } #[inline] pub fn from_posit(p: P8E0) -> Self { Self::from(p) } #[inline] pub fn from_bits(v: u32) -> Self { unsafe { mem::transmute(v) } } #[inline] pub fn to_bits(&self) -> u32 { unsafe { mem::transmute(self.clone()) } } #[inline] pub fn is_zero(&self) -> bool { self.to_bits() == 0 } #[inline] pub fn is_nar(&self) -> bool { self.to_bits() == 0x8000_0000 } #[inline] pub fn add_product(&mut self, p_a: P8E0, p_b: P8E0) { let ui_a = p_a.to_bits(); let ui_b = p_b.to_bits(); ops::fdp_add(self, ui_a, ui_b); } #[inline] pub fn sub_product(&mut self, p_a: P8E0, p_b: P8E0) { let ui_a = p_a.to_bits(); let ui_b = p_b.to_bits(); ops::fdp_sub(self, ui_a, ui_b); } #[inline] pub fn to_posit(&self) -> P8E0 { P8E0::from(self) } #[inline] pub fn clear(&mut self) { *self = Self::ZERO; } #[inline] pub fn neg(&mut self) { self.0 = self.0.wrapping_neg(); } #[inline] pub fn into_two_posits(mut self) -> (P8E0, P8E0) { let p1 = self.to_posit(); self -= p1; (p1, self.to_posit()) } #[inline] pub fn into_three_posits(mut self) -> (P8E0, P8E0, P8E0) { let p1 = self.to_posit(); self -= p1; let p2 = self.to_posit(); self -= p2; (p1, p2, self.to_posit()) } } impl crate::Quire<P8E0> for Q8E0 { type Bits = u32; fn init() -> Self { Self::init() } fn from_posit(p: P8E0) -> Self { Self::from_posit(p) } fn to_posit(&self) -> P8E0 { Self::to_posit(self) } fn from_bits(v: Self::Bits) -> Self { Self::from_bits(v) } fn to_bits(&self) -> Self::Bits { Self::to_bits(&self) } fn is_zero(&self) -> bool { Self::is_zero(&self) } fn is_nar(&self) -> bool { Self::is_nar(self) } fn add_product(&mut self, p_a: P8E0, p_b: P8E0) { Self::add_product(self, p_a, p_b) } fn sub_product(&mut self, p_a: P8E0, p_b: P8E0) { Self::sub_product(self, p_a, p_b) } fn clear(&mut self) { Self::clear(self) } fn neg(&mut self) { Self::neg(self) } } use core::fmt; impl fmt::Display for Q8E0 { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "{}", f64::from(self.clone().to_posit())) } }