GRASS GIS 7 Programmer's Manual  7.5.svn(2018)-r72846
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ATLAS_wrapper_blas_level_1.c File Reference
#include <math.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <grass/gmath.h>
Include dependency graph for ATLAS_wrapper_blas_level_1.c:

Go to the source code of this file.

Functions

double G_math_ddot (double *x, double *y, int rows)
 Compute the dot product of vector x and y using the ATLAS routine cblas_ddot. More...
 
float G_math_sdsdot (float *x, float *y, float a, int rows)
 Compute the dot product of vector x and y using the ATLAS routine cblas_sdsdot. More...
 
double G_math_dnrm2 (double *x, int rows)
 Compute the euclidean norm of vector x using the ATLAS routine cblas_dnrm2. More...
 
double G_math_dasum (double *x, int rows)
 Compute the absolute sum norm of vector x using the ATLAS routine cblas_dasum. More...
 
double G_math_idamax (double *x, int rows)
 Compute the maximum norm of vector x using the ATLAS routine cblas_idamax. More...
 
void G_math_dscal (double *x, double a, int rows)
 Scale vector x with scalar a using the ATLAS routine cblas_dscal. More...
 
void G_math_dcopy (double *x, double *y, int rows)
 Copy vector x to vector y. More...
 
void G_math_daxpy (double *x, double *y, double a, int rows)
 Scale vector x with scalar a and add it to y. More...
 
float G_math_sdot (float *x, float *y, int rows)
 Compute the dot product of vector x and y using the ATLAS routine cblas_sdot. More...
 
float G_math_snrm2 (float *x, int rows)
 Compute the euclidean norm of vector x using the ATLAS routine cblas_dnrm2. More...
 
float G_math_sasum (float *x, int rows)
 Compute the absolute sum norm of vector x using the ATLAS routine cblas_dasum. More...
 
float G_math_isamax (float *x, int rows)
 Compute the maximum norm of vector x using the ATLAS routine cblas_idamax. More...
 
void G_math_sscal (float *x, float a, int rows)
 Scale vector x with scalar a using the ATLAS routine cblas_dscal. More...
 
void G_math_scopy (float *x, float *y, int rows)
 Copy vector x to vector y. More...
 
void G_math_saxpy (float *x, float *y, float a, int rows)
 Scale vector x with scalar a and add it to y. More...
 

Function Documentation

double G_math_dasum ( double *  x,
int  rows 
)

Compute the absolute sum norm of vector x using the ATLAS routine cblas_dasum.

If grass was not compiled with ATLAS support it will call G_math_d_asum_norm, the OpenMP multi threaded grass implementatiom

Parameters
x(double *)
rows(int)
Returns
(double)

Definition at line 122 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_asum_norm().

void G_math_daxpy ( double *  x,
double *  y,
double  a,
int  rows 
)

Scale vector x with scalar a and add it to y.

\[ {\bf z} = a{\bf x} + {\bf y} \]

If grass was not compiled with ATLAS support it will call G_math_d_ax_by, the grass implementatiom

Parameters
x(double *)
y(double *)
a(double)
rows(int)
Returns
(void)

Definition at line 225 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_ax_by().

void G_math_dcopy ( double *  x,
double *  y,
int  rows 
)

Copy vector x to vector y.

If grass was not compiled with ATLAS support it will call G_math_d_copy

Parameters
x(double *)
y(double *)
rows(int)
Returns
(void)

Definition at line 196 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_copy().

double G_math_ddot ( double *  x,
double *  y,
int  rows 
)

Compute the dot product of vector x and y using the ATLAS routine cblas_ddot.

If grass was not compiled with ATLAS support it will call G_math_f_x_dot_y, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
y(float *)
rows(int)
Returns
(double)

Definition at line 44 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_x_dot_y().

double G_math_dnrm2 ( double *  x,
int  rows 
)

Compute the euclidean norm of vector x using the ATLAS routine cblas_dnrm2.

If grass was not compiled with ATLAS support it will call G_math_d_euclid_norm, the OpenMP multi threaded grass implementatiom

Parameters
x(double *)
rows(int)
Returns
(double)

Definition at line 97 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_euclid_norm().

void G_math_dscal ( double *  x,
double  a,
int  rows 
)

Scale vector x with scalar a using the ATLAS routine cblas_dscal.

If grass was not compiled with ATLAS support it will call G_math_d_ax_by, the OpenMP multi threaded grass implementatiom

Parameters
x(double *)
a(double)
rows(int)
Returns
(void)

Definition at line 173 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_ax_by().

double G_math_idamax ( double *  x,
int  rows 
)

Compute the maximum norm of vector x using the ATLAS routine cblas_idamax.

If grass was not compiled with ATLAS support it will call G_math_d_max_norm, the OpenMP multi threaded grass implementatiom

Parameters
x(double *)
rows(int)
Returns
(double)

Definition at line 147 of file ATLAS_wrapper_blas_level_1.c.

References G_math_d_max_norm().

float G_math_isamax ( float *  x,
int  rows 
)

Compute the maximum norm of vector x using the ATLAS routine cblas_idamax.

If grass was not compiled with ATLAS support it will call G_math_f_max_norm, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
rows(int)
Returns
(float)

Definition at line 331 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_max_norm().

float G_math_sasum ( float *  x,
int  rows 
)

Compute the absolute sum norm of vector x using the ATLAS routine cblas_dasum.

If grass was not compiled with ATLAS support it will call G_math_f_asum_norm, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
rows(int)
Returns
(float)

Definition at line 306 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_asum_norm().

void G_math_saxpy ( float *  x,
float *  y,
float  a,
int  rows 
)

Scale vector x with scalar a and add it to y.

\[ {\bf z} = a{\bf x} + {\bf y} \]

If grass was not compiled with ATLAS support it will call G_math_f_ax_by, the grass implementatiom

Parameters
x(float *)
y(float *)
a(float)
rows(int)
Returns
(void)

Definition at line 410 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_ax_by().

void G_math_scopy ( float *  x,
float *  y,
int  rows 
)

Copy vector x to vector y.

If grass was not compiled with ATLAS support it will call G_math_f_copy, the grass implementatiom

Parameters
x(float *)
y(float *)
rows(int)
Returns
(void)

Definition at line 381 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_copy().

float G_math_sdot ( float *  x,
float *  y,
int  rows 
)

Compute the dot product of vector x and y using the ATLAS routine cblas_sdot.

If grass was not compiled with ATLAS support it will call G_math_f_x_dot_y, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
y(float *)
rows(int)
Returns
(float)

Definition at line 256 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_x_dot_y().

float G_math_sdsdot ( float *  x,
float *  y,
float  a,
int  rows 
)

Compute the dot product of vector x and y using the ATLAS routine cblas_sdsdot.

If grass was not compiled with ATLAS support it will call G_math_f_x_dot_y, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
y(float *)
a(float)
rows(int)
Returns
(float)

Definition at line 72 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_x_dot_y().

float G_math_snrm2 ( float *  x,
int  rows 
)

Compute the euclidean norm of vector x using the ATLAS routine cblas_dnrm2.

If grass was not compiled with ATLAS support it will call G_math_f_euclid_norm, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
rows(int)
Returns
(float)

Definition at line 281 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_euclid_norm().

void G_math_sscal ( float *  x,
float  a,
int  rows 
)

Scale vector x with scalar a using the ATLAS routine cblas_dscal.

If grass was not compiled with ATLAS support it will call G_math_f_ax_by, the OpenMP multi threaded grass implementatiom

Parameters
x(float *)
a(float)
rows(int)
Returns
(float)

Definition at line 357 of file ATLAS_wrapper_blas_level_1.c.

References G_math_f_ax_by().