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Improves FMA mul_add implementation #150

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Improves FMA mul_add implementation #150

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46d2036
use auxiliary variables as in documented formula
PaulXiCao Oct 25, 2025
d2481a0
recommended impl from #148
PaulXiCao Oct 25, 2025
d984ef8
update method documentation formula
PaulXiCao Oct 25, 2025
00ac3a2
add trait bound
PaulXiCao Oct 25, 2025
bed1daa
move trait bounds into where clause
PaulXiCao Oct 25, 2025
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add trait bound
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@PaulXiCao
PaulXiCao committed Oct 25, 2025
commit 00ac3a20ac5ab11d7efb3f55eee2053b85a6a104
6 changes: 4 additions & 2 deletions src/lib.rs
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Expand Up @@ -788,7 +788,7 @@ impl<T: Clone + Num> Mul<Complex<T>> for Complex<T> {
}

// (a + i b) * (c + i d) + (e + i f) == (a*c - (b*d - e)) + i (a*d + (b*c + f))
impl<T: Clone + Num + MulAdd<Output = T>> MulAdd<Complex<T>> for Complex<T> {
impl<T: Clone + Num + MulAdd<Output = T> + Neg<Output = T>> MulAdd<Complex<T>> for Complex<T> {
type Output = Complex<T>;

#[inline]
Expand All @@ -804,7 +804,9 @@ impl<T: Clone + Num + MulAdd<Output = T>> MulAdd<Complex<T>> for Complex<T> {
Complex::new(re, im)
}
}
impl<'a, 'b, T: Clone + Num + MulAdd<Output = T>> MulAdd<&'b Complex<T>> for &'a Complex<T> {
impl<'a, 'b, T: Clone + Num + MulAdd<Output = T> + Neg<Output = T>> MulAdd<&'b Complex<T>>
for &'a Complex<T>
{
type Output = Complex<T>;

#[inline]
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