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:

  

• Column-wise multiplication if major = VSIP_COL:

  

for all from 0 to and from 0 to , where is the number of rows and 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.