p?tran

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 10/15/2026

Version

Public

p?tran

Transposes a real distributed matrix.

Syntax

void pstran(const MKL_INT *m, const MKL_INT *n, const float *alpha, const float *a,
            const MKL_INT *ia, const MKL_INT *ja, const MKL_INT *desca, const float *beta,
            float *c, const MKL_INT *ic, const MKL_INT *jc, const MKL_INT *descc);

void pdtran(const MKL_INT *m, const MKL_INT *n, const double *alpha, const double *a,
            const MKL_INT *ia, const MKL_INT *ja, const MKL_INT *desca,
            const double *beta, double *c, const MKL_INT *ic, const MKL_INT *jc,
            const MKL_INT *descc);

Include Files

mkl_pblas.h

Description

The p?tran routines transpose a real distributed matrix. The operation is defined as sub( C ):= beta *sub( C ) + alpha *sub( A )’,

where:

alpha and beta are scalars,

sub(C) is an m -by- n distributed matrix, sub(C)=C(ic:ic+m-1, jc:jc+n-1) .

sub(A) is a distributed matrix, sub(A)=A(ia:ia+n-1, ja:ja+m-1) .

Input Parameters

m

(global) Specifies the number of rows of the distributed matrix sub(C) , m ≥ 0.

n

(global) Specifies the number of columns of the distributed matrix sub(C) , n ≥ 0.

alpha

(global)

DOUBLE PRECISION for pdtran Specifies the scalar alpha .

a

(local)

DOUBLE PRECISION for pdtran Array, size (lld_a, LOCq(ja+m-1)) . This array contains the local pieces of the distributed matrix sub(A) .

ia , ja

(global) The row and column indices in the distributed matrix A indicating the first row and the first column of the submatrix sub(A) , respectively.

desca

(global and local) array of dimension 9. The array descriptor of the distributed matrix A .

beta

(global)

DOUBLE PRECISION for pdtran Specifies the scalar beta . When beta is equal to zero, then sub(C) need not be set on input.

c

(local)

DOUBLE PRECISION for pdtran Array, size (lld_c, LOCq(jc+n-1)) . This array contains the local pieces of the distributed matrix sub(C) .

ic , jc

(global) The row and column indices in the distributed matrix C indicating the first row and the first column of the submatrix sub(C) , respectively.

descc

(global and local) array of dimension 9. The array descriptor of the distributed matrix C .

Output Parameters

c: Overwritten by the updated submatrix.

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Developer Reference for Intel® oneAPI Math Kernel Library for C

p?tran

Syntax

Include Files

Description

Input Parameters

Output Parameters