Matrix Multiplication for large SizedArray

[bjack205]

I get the following error when multiplying two SizedArrays
conversion to pointer not defined for SizedArray{Tuple{20,20},Float64,2,2}

This occurs when the the _mul method passes the arrays to BLAS, and the error happens on the ccal in mul_blas!.

[c42f]

I haven't been able to reproduce this yet. The following works for me:

julia> a = rand(SizedMatrix{20,20});

julia> a*a
20×20 SArray{Tuple{20,20},Float64,2,400} with indices SOneTo(20)×SOneTo(20):
...

(You'll notice it produces an SArray, however that is changed in the latest master branch.)

Could you provide a complete self contained example of the failure?

[bjack205]

Sorry, my bad, I forgot to mention I'm using the in-place matrix multiply

julia> a = rand(SizedMatrix{20,20});
julia> b = rand(SizedMatrix{20,20});
julia> c = zeros(SizedMatrix{20,20});
julia> mul!(c,a,b)
ERROR: conversion to pointer not defined for SizedArray{Tuple{20,20},Float64,2,2}
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] unsafe_convert(::Type{Ptr{Float64}}, ::SizedArray{Tuple{20,20},Float64,2,2}) at ./pointer.jl:67
 [3] macro expansion at /home/brian/.julia/packages/StaticArrays/1g9bq/src/matrix_multiply.jl:307 [inlined]
 [4] mul_blas!(::Size{(20, 20)}, ::SizedArray{Tuple{20,20},Float64,2,2}, ::Size{(20, 20)}, ::Size{(20, 20)}, ::SizedArray{Tuple{20,20},Float64,2,2}, ::SizedArray{Tuple{20,20},Float64,2,2}) at /home/brian/.julia/packages/StaticArrays/1g9bq/src/matrix_multiply.jl:289
 [5] macro expansion at /home/brian/.julia/packages/StaticArrays/1g9bq/src/matrix_multiply.jl:266 [inlined]
 [6] _mul! at /home/brian/.julia/packages/StaticArrays/1g9bq/src/matrix_multiply.jl:248 [inlined]
 [7] mul!(::SizedArray{Tuple{20,20},Float64,2,2}, ::SizedArray{Tuple{20,20},Float64,2,2}, ::SizedArray{Tuple{20,20},Float64,2,2}) at /home/brian/.julia/packages/StaticArrays/1g9bq/src/matrix_multiply.jl:17
 [8] top-level scope at REPL[8]:1

[c42f]

Indeed that's a bug, thanks for the report!

[c42f]

Fixed in #738