# gemv: Genral Matrix-Vector Multiplication In modello: Homemade Deep Learning Library

## Description

Calculates: ans = alpha * op(A).B + beta * C where alpha and beta are scalars, A is a matrix, and B and C are vectors.

## Usage

 `1` ```gemv(ta, alpha = NULL, A, B, beta = NULL, C = NULL) ```

## Arguments

 `ta` if > 1 or TRUE op(A) = A**T else op(A) = A `alpha` a reference object of class 'number' with rank 0 `A` a reference object of class 'number' with rank 2 `B` a reference object of class 'number' with rank 1 `beta` a reference object of class 'number' with rank 0 `C` a reference number of class 'number' with rank 1

## Value

Returns a reference object of class 'number'

Filippo Monari

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19``` ```modello.init(10, 10, 10, 10) alpha = number(1, scalar=TRUE) beta = number(1, scalar=TRUE) A = number(matrix(rnorm(9), 3, 3)) B = number(rnorm(3)) C = number(rnorm(3)) ans1 = gemv(0, alpha, A, B, beta, C) ans2 = gemv(0, alpha, A, B) ans3 = gemv(0, NULL, A, B, NULL, C) ans4 = gemv(0, NULL, A, B, NULL, NULL) print(ans1) print(ans1\$v) print(ans2) print(ans2\$v) print(ans3) print(ans3\$v) print(ans4) print(ans4\$v) modello.close() ```

modello documentation built on Feb. 2, 2021, 9:06 a.m.