<masak> perl6: say sqrt -1
<p6eval> pugs, rakudo 545638: OUTPUT«NaN␤»
<p6eval> ..niecza v10-36-g241a2d8: OUTPUT«0+1i␤»
* masak submits nieczabug
This may or may not be spec, but it's been said on the channel many times: complex calculations are opt-in. sqrt -1+0i should give 0+1i as the answer, but sqrt -1 shouldn't.
sqrt(-1) is NaN, complex math is opt-in (fixes #64)
[S32-num/sqrt] Unfudges for sorear/niecza#64