cblas_?gemm_alloc

Syntax

float* cblas_sgemm_alloc (const CBLAS_IDENTIFIER identifier, const MKL_INT m, const MKL_INT n, const MKL_INT k);

double* cblas_dgemm_alloc (const CBLAS_IDENTIFIER identifier, const MKL_INT m, const MKL_INT n, const MKL_INT k);

Include Files

• mkl.h

Description

The cblas_?gemm_alloc routine is one of a set of related routines that enable use of an internal packed storage. Call the cblas_?gemm_alloc routine first to allocate storage for a packed matrix structure to be used in subsequent calls, ultimately to compute

C := alpha*op(A)*op(B) + beta*C,

where:

• op(X) is one of the operations op(X) = X, op(X) = X^T, or op(X) = X^H,
• alpha and beta are scalars,
• A , B, and C are matrices:
• op(A) is an m-by-k matrix,
• op(B) is a k-by-n matrix,
• C is an m-by-n matrix.

Input Parameters

identifier

Specifies which matrix is to be packed:

If identifier = CblasAMatrix, the routine allocates storage to pack matrix A.

If identifier = CblasBMatrix, the routine allocates storage to pack matrix B.

m

Specifies the number of rows of matrix op(A) and of the matrix C. The value of m must be at least zero.

n

Specifies the number of columns of matrix op(B) and the number of columns of matrix C. The value of n must be at least zero.

k

Specifies the number of columns of matrix op(A) and the number of rows of matrix op(B). The value of k must be at least zero.

Return Values

The function returns the allocated storage.