mkl_?geunpack

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 12/16/2022

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mkl_?geunpack_compact

Unpacks matrices from Compact format to standard (row- or column-major, pointer-to-pointer) format.

Syntax

mkl_sgeunpack_compact (MKL_LAYOUT layout, MKL_INT rows, MKL_INT columns, float * const *a, MKL_INT lda, const float *ap, MKL_INT ldap, MKL_COMPACT_PACK format, MKL_INT nm);

mkl_dgeunpack_compact (MKL_LAYOUT layout, MKL_INT rows, MKL_INT columns, double * const *a, MKL_INT lda, const double *ap, MKL_INT ldap, MKL_COMPACT_PACK format, MKL_INT nm);

mkl_cgeunpack_compact (MKL_LAYOUT layout, MKL_INT rows, MKL_INT columns, mkl_compact_complex_float * const *a, MKL_INT lda, const float *ap, MKL_INT ldap, MKL_COMPACT_PACK format, MKL_INT nm);

mkl_zgeunpack_compact (MKL_LAYOUT layout, MKL_INT rows, MKL_INT columns, mkl_compact_complex_double * const *a, MKL_INT lda, const double *ap, MKL_INT ldap, MKL_COMPACT_PACK format, MKL_INT nm);

Description

The routine unpacks nm Compact format matrices A_c from array ap into standard (row- or column-major, pointer-to-pointer) format in array A.

Input Parameters

layout

Specifies whether two-dimensional array storage is row-major (MKL_ROW_MAJOR) or column-major (MKL_COL_MAJOR).

rows

The number of rows of A; rows >= 0.

columns

The number of columns of A; columns >= 0.

lda

Leading dimension of A.

layout = MKL_COL_MAJOR	lda must be at least max (1,rows).
layout = MKL_ROW_MAJOR	lda must be at least max (1,columns).

ap

Array storing the compact format of input matrices A_c. See Compact Formator mkl_get_format_compact for details.

layout = MKL_COL_MAJOR	ap has size ldapcolumnsnm.
layout = MKL_ROW_MAJOR	ap has size ldaprowsnm.

ldap

Leading dimension of of A_c.

layout = MKL_COL_MAJOR	ldap must be at least max (1,rows).
layout = MKL_ROW_MAJOR	ldap must be at least max (1,columns).

NOTE:

The values of ldap used in mkl_?geunpack_compact must be consistent with the values used in mkl_?get_size_compact and mkl_?gepack_compact.

format

Specifies the format of the compact matrices. See Compact Format ormkl_get_format_compact for details.

nm

Total number of matrices that will be stored in Compact format.

Output Parameters

a

A standard format (row- or column-major, pointer-to-pointer) array, storing nm output A matrices.

layout = MKL_COL_MAJOR	a has size ldacolumnsnm.
layout = MKL_ROW_MAJOR	a has size ldarowsnm.

Parent topic: Compact BLAS and LAPACK Functions

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Developer Reference for Intel® oneAPI Math Kernel Library for C

mkl_?geunpack_compact