blas_level_3.c File Reference

#include <math.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <grass/gis.h>
#include <grass/gmath.h>

Include dependency graph for blas_level_3.c:

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Functions
void	G_math_d_aA_B (double **A, double **B, double a, double **C, int rows, int cols)
	Add two matrices and scale matrix A with the scalar a. More...
void	G_math_f_aA_B (float **A, float **B, float a, float **C, int rows, int cols)
	Add two matrices and scale matrix A with the scalar a. More...
void	G_math_d_AB (double **A, double **B, double **C, int rows_A, int cols_A, int cols_B)
	Matrix multiplication. More...
void	G_math_f_AB (float **A, float **B, float **C, int rows_A, int cols_A, int cols_B)
	Matrix multiplication. More...

Function Documentation

G_math_d_aA_B()

void G_math_d_aA_B	(	double **	A,
		double **	B,
		double	a,
		double **	C,
		int	rows,
		int	cols
	)

Add two matrices and scale matrix A with the scalar a.

In case B == NULL, matrix A will be scaled by scalar a.
In case a == 1.0, a simple matrix addition is performed.
In case a == -1.0 matrix A is subtracted from matrix B.
The result is written into matrix C.

This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.

Parameters

A	(double **)
B	(double **) if NULL, matrix A is scaled by scalar a only
a	(double)
C	(double **)
rows	(int)
cols	(int)

Returns

(void)

Definition at line 49 of file blas_level_3.c.

G_math_d_AB()

void G_math_d_AB	(	double **	A,
		double **	B,
		double **	C,
		int	rows_A,
		int	cols_A,
		int	cols_B
	)

Matrix multiplication.

The result is written into matrix C.

A must be of size rows_A * cols_A B must be of size rows_B * cols_B with rows_B == cols_A C must be of size rows_A * cols_B

This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.

Parameters

A	(double **)
B	(double **)
C	(double **)
rows_A	(int)
cols_A	(int)
cols_B	(int)

Returns

(void)

Definition at line 172 of file blas_level_3.c.

G_math_f_aA_B()

void G_math_f_aA_B	(	float **	A,
		float **	B,
		float	a,
		float **	C,
		int	rows,
		int	cols
	)

Add two matrices and scale matrix A with the scalar a.

In case B == NULL, matrix A will be scaled by scalar a.
In case a == 1.0, a simple matrix addition is performed.
In case a == -1.0 matrix A is subtracted from matrix B.
The result is written into matrix C.

This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.

Parameters

A	(float **)
B	(float **) if NULL, matrix A is scaled by scalar a only
a	(float)
C	(float **)
rows	(int)
cols	(int)

Returns

(void)

Definition at line 112 of file blas_level_3.c.

G_math_f_AB()

void G_math_f_AB	(	float **	A,
		float **	B,
		float **	C,
		int	rows_A,
		int	cols_A,
		int	cols_B
	)

Matrix multiplication.

The result is written into matrix C.

A must be of size rows_A * cols_A B must be of size rows_B * cols_B with rows_B == cols_A C must be of size rows_A * cols_B

This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.

Parameters

A	(float **)
B	(float **)
C	(float **)
rows_A	(int)
cols_A	(int)
cols_B	(int)

Returns

(void)

Definition at line 214 of file blas_level_3.c.