jaime 2.3.1

j.a.i.m.e. is an ergonomic all purpose gradient descent engine
Documentation 
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use std::ops::{Sub, SubAssign};

use crate::simd_arr::SimdArr;

use super::{check_nan, Dual};

impl<const P: usize, S: SimdArr<P>> Sub<Dual<P, S>> for Dual<P, S> {
    type Output = Dual<P, S>;

    fn sub(mut self, mut rhs: Dual<P, S>) -> Self::Output {
        self.real -= &rhs.real;
        rhs.sigma.neg();
        self.sigma.acumulate(&rhs.sigma);

        check_nan(self)
    }
}

impl<const P: usize, S: SimdArr<P>> Sub<f32> for Dual<P, S> {
    type Output = Dual<P, S>;

    fn sub(mut self, rhs: f32) -> Self::Output {
        self.real -= rhs;

        check_nan(self)
    }
}

impl<const P: usize, S: SimdArr<P>> SubAssign<Dual<P, S>> for Dual<P, S> {
    fn sub_assign(&mut self, mut rhs: Self) {
        self.real -= &rhs.real;
        rhs.sigma.neg();
        self.sigma.acumulate(&rhs.sigma);
    }
}