Msub ( matrix row col height width -- sub )
Basic Linear Algebra Subroutines (BLAS) interface » BLAS interface matrix operations

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Vocabulary
math.blas.matrices

Inputs

matrix	a blas-matrix-base
row	an integer
col	an integer
height	an integer
width	an integer

Outputs

sub	a blas-matrix-base

Word description
Select a rectangular submatrix of matrix with the given dimensions. The returned submatrix will share the parent matrix's storage.

Definition

USING: accessors kernel math.blas.matrices.private ;

IN: math.blas.matrices

:: Msub ( matrix row col height width -- sub )
    matrix dup transpose>>
    [ col row width height ] [ row col height width ] if (Msub)
    matrix transpose>> matrix (blas-matrix-like) ;