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use std::ops::{Add, Sub}; use std::{f32, f64}; pub trait WeightNum: PartialOrd + Copy + Sub<Output = Self> + Add<Output = Self> { fn is_zero(&self) -> bool; fn is_valid(&self) -> bool { true } fn add_if_valid(self, other: Self) -> Self { if self.is_valid() { self + other } else { self } } fn sub_if_valid(self, other: Self) -> Self { if self.is_valid() { self - other } else { self } } } impl WeightNum for usize { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for isize { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for u64 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for i64 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for u32 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for i32 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for u16 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for i16 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for u8 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for i8 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0 } } impl WeightNum for f64 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0.0 } #[inline(always)] fn is_valid(&self) -> bool { self.is_finite() } } impl WeightNum for f32 { #[inline(always)] fn is_zero(&self) -> bool { *self == 0.0 } #[inline(always)] fn is_valid(&self) -> bool { self.is_finite() } }