[Feature Request] cblas_zomatadd should be supported.

[xqch1983]

The clbas_zomatadd should be supported same with the interface in MKL. implement the addition of two matrixes as bellow:
C := alphaop(A) + betaop(B)

The API in MKL is mkl_?omatadd, which scales and adds two matrices, as well as performing out-of-place transposition operations.

[martin-frbg]

So something like omatcopy plus axpby looping over all columns... may I ask what the use case for this is, apart from it being part of MKL's BLAS-like extensions ?

[brada4]

Cast matrices to vectors.
Scal one and axpy other?

[xqch1983]

So something like omatcopy plus axpby looping over all columns... may I ask what the use case for this is, apart from it being part of MKL's BLAS-like extensions ?

Yes, I checked the use case of matrix is that rows=m, cols=1 or rows=1, cols=n, so this omatadd case can be replaced by omatcopy and axpy. Actually, users want to replace the MKL BLAS API using OpenBLAS API one-to-one directly.

[brada4]

So make supercompat header to do the casts. BLAS L1 is quite well optimised by modern compilers.

[martin-frbg]

So something like omatcopy plus axpby looping over all columns... may I ask what the use case for this is, apart from it being part of MKL's BLAS-like extensions ?

Yes, I checked the use case of matrix is that rows=m, cols=1 or rows=1, cols=n, so this omatadd case can be replaced by omatcopy and axpy. Actually, users want to replace the MKL BLAS API using OpenBLAS API one-to-one directly.

do you happen to have sample code and/or a testcase ? I'm primarily curious in what kind of context this particular function is useful (and of course it is a general problem with BLAS extensions that few libraries implement them - besides the one who "invented" it)