BLAS interface vector operations - Factor Documentation (original) (raw)

BLAS interface vector operations
Basic Linear Algebra Subroutines (BLAS) interface

Slicing vectors:
Vsub ( v start length -- sub )

Taking the norm (magnitude) of a vector:

Vnorm ( x -- norm )

Summing and taking the maximum of elements:

Vasum ( x -- sum )

Viamax ( x -- max-i )
Vamax ( x -- max )

Scalar-vector products:

n*V! ( alpha x -- x=alpha*x )

n*V ( alpha x -- alpha*x )
V*n ( x alpha -- x*alpha )
V/n ( x alpha -- x/alpha )
Vneg ( x -- -x )

Vector addition:

n*V+V! ( alpha x y -- y=alpha*x+y )

n*V+V ( alpha x y -- alpha*x+y )
V+ ( x y -- x+y )
V- ( x y -- x-y )

Vector inner products:

V. ( x y -- x.y )

V.conj ( x y -- xconj.y )

Literal syntax:

svector{

dvector{
cvector{
zvector{