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Using a strong zero in Dual(0.0, 1)^0 to avoid NaN #84

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Merged
dlfivefifty merged 8 commits into from
Apr 3, 2021
Merged

Using a strong zero in Dual(0.0, 1)^0 to avoid NaN #84

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88cb00b
test and fix for nan epsilon of dual^UInt64(0)
jwscook Mar 17, 2021
a331c1f
"0.6.3" -> "0.6.4"
jwscook Mar 17, 2021
3634f5d
removed NaNs, codified behaviour with Ints
jwscook Mar 19, 2021
31b063a
Merge branch 'master' into strongzerosandnonans
jwscook Mar 19, 2021
a27ec35
improve testing, remove type instability
jwscook Mar 21, 2021
89a36a0
merge conflict
jwscook Mar 21, 2021
cdf9682
handle Dual(Integer(1), n)^Integer
jwscook Mar 21, 2021
02aa88f
version semver bump 0.6.4 -> 0.6.5
jwscook Apr 2, 2021
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Merge branch 'master' into strongzerosandnonans
  • Loading branch information
@jwscook
jwscook authored Mar 19, 2021
commit 31b063a6873bf934a54ba8b8cf6b08f716d5d684
1 change: 0 additions & 1 deletion src/dual.jl
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Expand Up @@ -267,7 +267,6 @@ for T ∈ (:Integer, :Rational, :Number)
@eval Base.:^(z::Dual, n::$T) = pow(z, n)
end


NaNMath.pow(z::Dual, n::Number) = Dual(NaNMath.pow(value(z),n), epsilon(z)*n*NaNMath.pow(value(z),n-1))
NaNMath.pow(z::Number, w::Dual) = Dual(NaNMath.pow(z,value(w)), epsilon(w)*NaNMath.pow(z,value(w))*log(z))

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