add length type parameter to StepRangeLen #41619
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sostock
reviewed
Jul 17, 2021
82 tasks
| ref = start | ||
| step = (Δ/(len-1))*Δfac | ||
| else | ||
| imin = Int(len) | ||
| imin = len |
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The 2 and 1 on the call to steprangelen_hp below might also need their types adjusted.
timholy
reviewed
Jul 20, 2021
base/range.jl
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| 1 <= offset <= max(1,len) || throw(ArgumentError("StepRangeLen: offset must be in [1,$len], got $offset")) | ||
| new(ref, step, len, offset) | ||
| offset = convert(L, offset) | ||
| 1 <= offset <= max(1, len) || throw(ArgumentError("StepRangeLen: offset must be in [1,$len], got $offset")) |
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Maybe take the chance to put this in an internal function to avoid the GC frame? Saves a ns or so in the non-error case (~30%).
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I think I will leave that to someone else. This has grown already into a monstrosity (and I would like to see codegen do that transform automatically instead)
Also be more careful about using additive identity instead of multiplicative, and be more consistent about types in a few places. Fixes #41517
|
@JeffBezanson could you re-review? this now transforms LinRange too, for the sake of completeness |
Co-authored-by: Jeff Bezanson <jeff.bezanson@gmail.com>
| # For #18336 we need to prevent promotion of the step type: | ||
| broadcasted(::DefaultArrayStyle{1}, ::typeof(+), r::AbstractRange, x::Number) = range(first(r) + x, step=step(r), length=length(r)) | ||
| broadcasted(::DefaultArrayStyle{1}, ::typeof(+), x::Number, r::AbstractRange) = range(x + first(r), step=step(r), length=length(r)) | ||
| broadcasted(::DefaultArrayStyle{1}, ::typeof(+), r::OrdinalRange, x::Real) = range(first(r) + x, last(r) + x, step=step(r)) | ||
| broadcasted(::DefaultArrayStyle{1}, ::typeof(+), x::Real, r::Real) = range(x + first(r), x + last(r), step=step(r)) |
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This line should supposedly have r::OrdinalRange, but cf #42291.
KristofferC
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Jul 8, 2022
* Document that `L`ength parameter needs Julia 1.7 vtjnash added the 4th type parameter `L` in #41619 to `StepRangeLen`. That addition seems to have appeared in Julia 1.7 so it should be documented as such. I found this out the hard way because my CI for code that used `L` is failing with Julia 1.6. Co-authored-by: Johnny Chen <johnnychen94@hotmail.com> Co-authored-by: Keno Fischer <keno@alumni.harvard.edu>
ffucci
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Aug 11, 2022
* Document that `L`ength parameter needs Julia 1.7 vtjnash added the 4th type parameter `L` in JuliaLang#41619 to `StepRangeLen`. That addition seems to have appeared in Julia 1.7 so it should be documented as such. I found this out the hard way because my CI for code that used `L` is failing with Julia 1.6. Co-authored-by: Johnny Chen <johnnychen94@hotmail.com> Co-authored-by: Keno Fischer <keno@alumni.harvard.edu>
pcjentsch
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Aug 18, 2022
* Document that `L`ength parameter needs Julia 1.7 vtjnash added the 4th type parameter `L` in JuliaLang#41619 to `StepRangeLen`. That addition seems to have appeared in Julia 1.7 so it should be documented as such. I found this out the hard way because my CI for code that used `L` is failing with Julia 1.6. Co-authored-by: Johnny Chen <johnnychen94@hotmail.com> Co-authored-by: Keno Fischer <keno@alumni.harvard.edu>
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Also be more careful about using additive identity instead of
multiplicative, and be more consistent about types in a few places.
Fixes #41517