n*M.V+n*V! ( alpha A x beta y -- y=alpha*A.x+b*y )
Basic Linear Algebra Subroutines (BLAS) interface » BLAS interface matrix operations

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Vocabulary
math.blas.matrices

Inputs

alpha	a number
A	a blas-matrix-base
x	a blas-vector-base
beta	a number
y	a blas-vector-base

Outputs

y=alpha*A.x+b*y

a blas-vector-base

Word description
Calculate the matrix-vector product αAx + βy, and overwrite the current contents of y with the result. The width of A must match the length of x, and the height must match the length of y. Corresponds to the xGEMV routines in BLAS.

Side effects
Modifies y

See also
n*M.V+n*V, n*M.V, M.V

Definition

IN: math.blas.matrices

GENERIC: n*M.V+n*V! ( alpha A x beta y -- y=alpha*A.x+b*y )

Methods

USING: kernel math.blas.ffi math.blas.matrices
math.blas.matrices.private math.blas.vectors ;

M: complex-double-blas-vector n*M.V+n*V!
    (prepare-gemv) [ ZGEMV ] dip ;


USING: kernel math.blas.ffi math.blas.matrices
math.blas.matrices.private math.blas.vectors ;

M: complex-float-blas-vector n*M.V+n*V!
    (prepare-gemv) [ CGEMV ] dip ;


USING: kernel math.blas.ffi math.blas.matrices
math.blas.matrices.private math.blas.vectors ;

M: double-blas-vector n*M.V+n*V! (prepare-gemv) [ DGEMV ] dip ;


USING: kernel math.blas.ffi math.blas.matrices
math.blas.matrices.private math.blas.vectors ;

M: float-blas-vector n*M.V+n*V! (prepare-gemv) [ SGEMV ] dip ;