dmat_ops.c File Reference

Contains functions interacting_the Dense_Matrix struct with others. More...

#include "libftsh.h"

Defines
#define	ENTEREXIT   0
Functions
void	dmat_dvect_multiply (Dense_Vector *out, Dense_Matrix *inmat, Dense_Vector *invect)
void	dmat_t_dvect_multiply (Dense_Vector *out, Dense_Matrix *inmat, Dense_Vector *invect)

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Detailed Description

Contains functions interacting_the Dense_Matrix struct with others.

Summary:

• dmat_dvect_multiply applies to a Dense_Vector
• dmat_t_dvect_multiply applies the transpose to a Dense_Vector

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Function Documentation

void dmat_dvect_multiply	(	Dense_Vector *	out,
		Dense_Matrix *	inmat,
		Dense_Vector *	invect
	)

Apply a matrix to a vector to get a new vector. The matrix is in Dense_Matrix format, and the vectors in Dense_Vector format.

INPUTS:

• out -- the Dense_Vector to put the result in. Should be initialized as follows:
  • .max_size is the amount of memory available.
  • .vector points to .max_size REAL
• invect -- an input vector in Dense_Vector format
• inmat -- the input matrix in Dense_Matrix format

OUTPUT: out -- inmat * invect = out

NOTES:

• ordering of loops not optimized
• ? use registers for n_row n_col?
• blocking could help speed

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void dmat_t_dvect_multiply	(	Dense_Vector *	out,
		Dense_Matrix *	inmat,
		Dense_Vector *	invect
	)

Apply the TRANSPOSE of a matrix to a vector to get a new vector. The matrix is in Dense_Matrix format, and the vectors in Dense_Vector format.

INPUTS:

• out -- the Dense_Vector to put the result in. Should be initialized as follows:
  • .max_size is the amount of memory available.
  • .vector points to .max_size REAL
• invect -- an input vector in Dense_Vector format
• inmat -- the input matrix in Dense_Matrix format

OUTPUT: out -- TRANSPOSE(inmat) * invect = out

NOTES:

• ordering of loops not optimized
• blocking may improve speed

Here is the caller graph for this function: