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GRASS GIS 7 Programmer's Manual
7.9.dev(2021)-e5379bbd7
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#include <math.h>#include <unistd.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include <grass/gis.h>#include <grass/gmath.h>
Go to the source code of this file.
Functions | |
| void | G_math_d_x_dot_y (double *x, double *y, double *value, int rows) |
| Compute the dot product of vector x and y. More... | |
| void | G_math_d_euclid_norm (double *x, double *value, int rows) |
| Compute the euclid norm of vector x. More... | |
| void | G_math_d_asum_norm (double *x, double *value, int rows) |
| Compute the asum norm of vector x. More... | |
| void | G_math_d_max_norm (double *x, double *value, int rows) |
| Compute the maximum norm of vector x. More... | |
| void | G_math_d_ax_by (double *x, double *y, double *z, double a, double b, int rows) |
| Scales vectors x and y with the scalars a and b and adds them. More... | |
| void | G_math_d_copy (double *x, double *y, int rows) |
| Copy the vector x to y. More... | |
| void | G_math_f_x_dot_y (float *x, float *y, float *value, int rows) |
| Compute the dot product of vector x and y. More... | |
| void | G_math_f_euclid_norm (float *x, float *value, int rows) |
| Compute the euclid norm of vector x. More... | |
| void | G_math_f_asum_norm (float *x, float *value, int rows) |
| Compute the asum norm of vector x. More... | |
| void | G_math_f_max_norm (float *x, float *value, int rows) |
| Compute the maximum norm of vector x. More... | |
| void | G_math_f_ax_by (float *x, float *y, float *z, float a, float b, int rows) |
| Scales vectors x and y with the scalars a and b and adds them. More... | |
| void | G_math_f_copy (float *x, float *y, int rows) |
| Copy the vector x to y. More... | |
| void | G_math_i_x_dot_y (int *x, int *y, double *value, int rows) |
| Compute the dot product of vector x and y. More... | |
| void | G_math_i_euclid_norm (int *x, double *value, int rows) |
| Compute the euclid norm of vector x. More... | |
| void | G_math_i_asum_norm (int *x, double *value, int rows) |
| Compute the asum norm of vector x. More... | |
| void | G_math_i_max_norm (int *x, int *value, int rows) |
| Compute the maximum norm of vector x. More... | |
| void | G_math_i_ax_by (int *x, int *y, int *z, int a, int b, int rows) |
| Scales vectors x and y with the scalars a and b and adds them. More... | |
| void | G_math_i_copy (int *x, int *y, int rows) |
| Copy the vector x to y. More... | |
| void G_math_d_asum_norm | ( | double * | x, |
| double * | value, | ||
| int | rows | ||
| ) |
Compute the asum norm of vector x.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (double *)– the vector |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 112 of file blas_level_1.c.
Referenced by G_math_dasum().
| void G_math_d_ax_by | ( | double * | x, |
| double * | y, | ||
| double * | z, | ||
| double | a, | ||
| double | b, | ||
| int | rows | ||
| ) |
Scales vectors x and y with the scalars a and b and adds them.
This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.
| x | (double *) |
| y | (double *) |
| z | (double *) |
| a | (double) |
| b | (double) |
| rows | (int) |
Definition at line 173 of file blas_level_1.c.
| void G_math_d_copy | ( | double * | x, |
| double * | y, | ||
| int | rows | ||
| ) |
Copy the vector x to y.
This function is not multi-threaded
| x | (double *) |
| y | (double *) |
| rows | (int) |
Definition at line 237 of file blas_level_1.c.
Referenced by G_math_dcopy().
| void G_math_d_euclid_norm | ( | double * | x, |
| double * | value, | ||
| int | rows | ||
| ) |
Compute the euclid norm of vector x.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (double *) – the vector |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 80 of file blas_level_1.c.
Referenced by G_math_dnrm2().
| void G_math_d_max_norm | ( | double * | x, |
| double * | value, | ||
| int | rows | ||
| ) |
Compute the maximum norm of vector x.
This function is not multi-threaded
| x | (double *)– the vector |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 142 of file blas_level_1.c.
References max.
Referenced by G_math_idamax().
| void G_math_d_x_dot_y | ( | double * | x, |
| double * | y, | ||
| double * | value, | ||
| int | rows | ||
| ) |
Compute the dot product of vector x and y.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (double *) |
| y | (double *) |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 48 of file blas_level_1.c.
Referenced by G_math_ddot().
| void G_math_f_asum_norm | ( | float * | x, |
| float * | value, | ||
| int | rows | ||
| ) |
Compute the asum norm of vector x.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (float *)– the vector |
| value | (float *) – the return value |
| rows | (int) |
Definition at line 328 of file blas_level_1.c.
References count.
Referenced by G_math_sasum().
| void G_math_f_ax_by | ( | float * | x, |
| float * | y, | ||
| float * | z, | ||
| float | a, | ||
| float | b, | ||
| int | rows | ||
| ) |
Scales vectors x and y with the scalars a and b and adds them.
This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.
| x | (float *) |
| y | (float *) |
| z | (float *) |
| a | (float) |
| b | (float) |
| rows | (int) |
Definition at line 392 of file blas_level_1.c.
| void G_math_f_copy | ( | float * | x, |
| float * | y, | ||
| int | rows | ||
| ) |
Copy the vector x to y.
This function is not multi-threaded
| x | (float *) |
| y | (float *) |
| rows | (int) |
Definition at line 455 of file blas_level_1.c.
Referenced by G_math_scopy().
| void G_math_f_euclid_norm | ( | float * | x, |
| float * | value, | ||
| int | rows | ||
| ) |
Compute the euclid norm of vector x.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (double *) – the vector |
| value | (float *) – the return value |
| rows | (int) |
Definition at line 296 of file blas_level_1.c.
Referenced by G_math_snrm2().
| void G_math_f_max_norm | ( | float * | x, |
| float * | value, | ||
| int | rows | ||
| ) |
Compute the maximum norm of vector x.
This function is not multi-threaded
| x | (float *)– the vector |
| value | (float *) – the return value |
| rows | (int) |
Definition at line 361 of file blas_level_1.c.
References max.
Referenced by G_math_isamax().
| void G_math_f_x_dot_y | ( | float * | x, |
| float * | y, | ||
| float * | value, | ||
| int | rows | ||
| ) |
Compute the dot product of vector x and y.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (float *) |
| y | (float *) |
| value | (float *) – the return value |
| rows | (int) |
Definition at line 264 of file blas_level_1.c.
Referenced by G_math_sdot().
| void G_math_i_asum_norm | ( | int * | x, |
| double * | value, | ||
| int | rows | ||
| ) |
Compute the asum norm of vector x.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (int *)– the vector |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 546 of file blas_level_1.c.
| void G_math_i_ax_by | ( | int * | x, |
| int * | y, | ||
| int * | z, | ||
| int | a, | ||
| int | b, | ||
| int | rows | ||
| ) |
Scales vectors x and y with the scalars a and b and adds them.
This function is multi-threaded with OpenMP and can be called within a parallel OpenMP region.
| x | (int *) |
| y | (int *) |
| z | (int *) |
| a | (int) |
| b | (int) |
| rows | (int) |
Definition at line 607 of file blas_level_1.c.
| void G_math_i_copy | ( | int * | x, |
| int * | y, | ||
| int | rows | ||
| ) |
Copy the vector x to y.
This function is not multi-threaded
| x | (int *) |
| y | (int *) |
| rows | (int) |
Definition at line 670 of file blas_level_1.c.
| void G_math_i_euclid_norm | ( | int * | x, |
| double * | value, | ||
| int | rows | ||
| ) |
Compute the euclid norm of vector x.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (int *) – the vector |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 514 of file blas_level_1.c.
| void G_math_i_max_norm | ( | int * | x, |
| int * | value, | ||
| int | rows | ||
| ) |
Compute the maximum norm of vector x.
This function is not multi-threaded
| x | (int *)– the vector |
| value | (int *) – the return value |
| rows | (int) |
Definition at line 576 of file blas_level_1.c.
References max.
| void G_math_i_x_dot_y | ( | int * | x, |
| int * | y, | ||
| double * | value, | ||
| int | rows | ||
| ) |
Compute the dot product of vector x and y.
The functions creates its own parallel OpenMP region. It can be called within a parallel OpenMP region if nested parallelism is supported by the compiler.
| x | (int *) |
| y | (int *) |
| value | (double *) – the return value |
| rows | (int) |
Definition at line 482 of file blas_level_1.c.