Fix RoundNearestTiesAway #29700
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Fix RoundNearestTiesAway #29700
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This was referenced Oct 18, 2018
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Note that this won't set the floating point status flags correctly. |
| y = floor(x) | ||
| ifelse(x==y,y,copysign(floor(2*x-y),x)) | ||
| function round(x::T, ::RoundingMode{:NearestTiesUp}) where {T <: AbstractFloat} | ||
| copysign(floor((x + (T(0.25) - eps(T(0.5)))) + (T(0.25) + eps(T(0.5)))), x) |
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Would prevfloat and nextfloat be clearer here?
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Perhaps: it would be
copysign(floor((x + prevfloat(T(0.25),4)) + nextfloat(T(0.25),2), x)
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Backportable? |
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Fixes #29698. Idea thanks to @raphlinus (https://twitter.com/raphlinus/status/1052646958962159616).