Intel® Math Kernel Library 2018 Developer Reference - C

BLAS-like Extensions

Intel MKL provides C and Fortran routines to extend the functionality of the BLAS routines. These include routines to compute vector products, matrix-vector products, and matrix-matrix products.

Intel MKL also provides routines to perform certain data manipulation, including matrix in-place and out-of-place transposition operations combined with simple matrix arithmetic operations. Transposition operations are Copy As Is, Conjugate transpose, Transpose, and Conjugate. Each routine adds the possibility of scaling during the transposition operation by giving some alpha and/or beta parameters. Each routine supports both row-major orderings and column-major orderings.

Table “BLAS-like Extensions” lists these routines.

The <?> symbol in the routine short names is a precision prefix that indicates the data type:

s

float

d

double

c

MKL_Complex8

z

MKL_Complex16

BLAS-like Extensions

Routine

Data Types

Description

cblas_?axpby

s, d, c, z

Scales two vectors, adds them to one another and stores result in the vector (routines).

cblas_?gemmt

s, d, c, z

Computes a matrix-matrix product with general matrices but updates only the upper or lower triangular part of the result matrix.

cblas_?gemm3m

c, z

Computes a scalar-matrix-matrix product using matrix multiplications and adds the result to a scalar-matrix product.

cblas_?gemm_batch

s, d, c, z

Computes scalar-matrix-matrix products and adds the results to scalar matrix products for groups of general matrices.

cblas_?gemm3m_batch

c, z

Computes a scalar-matrix-matrix product using matrix multiplications and adds the result to a scalar-matrix product.

cblas_?trsm_batch

s, d, c, z

Solves a triangular matrix equation for a group of matrices.

mkl_?imatcopy

s, d, c, z

Performs scaling and in-place transposition/copying of matrices.

mkl_?omatcopy

s, d, c, z

Performs scaling and out-of-place transposition/copying of matrices.

mkl_?omatcopy2

s, d, c, z

Performs two-strided scaling and out-of-place transposition/copying of matrices.

mkl_?omatadd

s, d, c, z

Performs scaling and sum of two matrices including their out-of-place transposition/copying.

cblas_?gemm_alloc

s, d

Allocates storage for a packed matrix.

?cblas_gemm_pack

s, d

Performs scaling and packing of the matrix into the previously allocated buffer.

cblas_?gemm_compute

s, d

Computes a matrix-matrix product with general matrices where one or both input matrices are stored in a packed data structure and adds the result to a scalar-matrix product.

cblas_?gemm_free

s, d

Frees the storage previously allocated for the packed matrix.

cblas_gemm_*

integer

Computes a matrix-matrix product with general integer matrices.