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Simpler complex division implementation (#20088)

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Dan Rose
2022-09-01 10:44:07 -05:00
committed by GitHub
parent 0f555110e6
commit c2cdc752c8
1 changed files with 1 additions and 12 deletions
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13
lib/pure/complex.nim
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@@ -163,18 +163,7 @@ func `/`*[T](x: T; y: Complex[T]): Complex[T] =
func `/`*[T](x, y: Complex[T]): Complex[T] =
## Divides two complex numbers.
var r, den: T
if abs(y.re) < abs(y.im):
r = y.re / y.im
den = y.im + r * y.re
result.re = (x.re * r + x.im) / den
result.im = (x.im * r - x.re) / den
else:
r = y.im / y.re
den = y.re + r * y.im
result.re = (x.re + r * x.im) / den
result.im = (x.im - r * x.re) / den
x * conjugate(y) / abs2(y)
func `+=`*[T](x: var Complex[T]; y: Complex[T]) =
## Adds `y` to `x`.