vsip_dvmmul_p - Vector-Matrix Multiplication

Core

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While our Core implementation implements all functions given in the standard we are still working on completing this documentation.

Please refer to the VSIPL standard for a complete function reference of the Core profile until we have completed work on this documentation.

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4.3.17 vsip_dvmmul_p - Vector-Matrix Multiplication

void vsip_vmmul_f(const vsip_vview_f *a, const vsip_mview_f *b, 
                 vsip_major major, const vsip_mview_f *r); 
 
void vsip_cvmmul_f(const vsip_cvview_f *a, const vsip_cmview_f *b, 
                  vsip_major major, const vsip_cmview_f *r);

Description

This function performs a vector-matrix multiplication. The operation performs either:

Row-wise multiplication if major = VSIP_ROW:
$ri,j= aj·bi,j$
Column-wise multiplication if major = VSIP_COL:
$ri,j= ai·bi,j$

for all $i$ from 0 to $m -1$ and $j$ from 0 to $n-1$ , where $m$ is the number of rows and $n$ is the number of columns in the matrix.

Parameters

const vsip_dvview_p* a: Input vector containing the multiplier elements.
const vsip_dmview_p* b: Input matrix to be multiplied.
vsip_major major: Storage order specifying the multiplication direction:
- VSIP_ROW: Multiply each row of the matrix by the corresponding vector element
- VSIP_COL: Multiply each column of the matrix by the corresponding vector element
const vsip_dmview_p* r: Output matrix that will store the results.

Notes

The length of the vector must match either the number of columns (for VSIP_COL) or the number of rows (for VSIP_ROW) in the matrix.

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