Allow arbitrary stride in LinearAlgebra.axpy ?

[kbarros]

Hi,

Low-level BLAS routines allow specification of a stride. Methods in LinearAlgebra.BLAS follow suit. For example, LinearAlgebra.BLAS.scal!(n, a, X, incx) takes n and incx parameters, and is publicly defined in the LinearAlgebra.BLAS API .

A curious exception is that LinearAlgebra.BLAS.axpy!(n, alpha, dx, incx, dy, incy) is not documented in the public API. Instead, only LinearAlgebra.axpy!(a, X, Y) is documented. Perhaps this is an oversight?

[ViralBShah]

This is improved in JuliaLang/julia#44758, but documentation still is necessary.