Vsub ( v start length -- sub )
Basic Linear Algebra Subroutines (BLAS) interface » BLAS interface vector operations

Next:

Vnorm ( x -- norm )

Vocabulary
math.blas.vectors

Inputs

v	a blas-vector-base
start	an integer
length	an integer

Outputs

sub	a blas-vector-base

Word description
Slice a subvector out of v starting at start with the given length. The subvector will share storage with the parent vector.

Definition

USING: accessors alien alien.c-types math
math.blas.vectors.private ;

IN: math.blas.vectors

:: Vsub ( v start length -- sub )
    v inc>> start * v element-type heap-size *
    v underlying>> <displaced-alien>
    length v inc>> v (blas-vector-like) ;