NAME

ow_log_matrix_elements_2 - Computes log(x) of matrix elements

SYNOPSIS

#include "m/m_mat_arith.h"

Example compile flags (system dependent):
  -DLINUX_X86_64 -DLINUX_X86_64_OPTERON  -DGNU_COMPILER 
   -I/home/kobus/include
   -L/home/kobus/misc/load/linux_x86_64_opteron -L/usr/lib/x86_64-linux-gnu
  -lKJB                               -lfftw3  -lgsl -lgslcblas -ljpeg  -lSVM -lstdc++                    -lpthread -lSLATEC -lg2c    -lacml -lacml_mv -lblas -lg2c      -lncursesw 


int ow_log_matrix_elements_2
(
	Matrix *source_mp,
	double log_zero
);

DESCRIPTION

This routine computes log(x) of matrix elements. If the element is zero, then the argument log_zero is used instead. If the element is negative, routine fails.

RETURNS

NO_ERROR on success, and ERROR on failure, with an error message being set. This routine fails if any of the matrix elements are negative.

NOTE

This routine overwrites its input. See log_matrix_elements(3) for an alternate routine which does not.

RELATED

log_matrix_elements(3)

DISCLAIMER

This software is not adequatedly tested. It is recomended that results are checked independantly where appropriate.

AUTHOR

Kobus Barnard

DOCUMENTER

Kobus Barnard

SEE ALSO

get_vector_outer_product , add_matrices , ow_add_matrices , ow_add_matrices_2 , subtract_matrices , ow_subtract_matrices , multiply_matrices_ew , ow_multiply_matrices_ew , ow_multiply_matrices_ew_2 , divide_matrices_ew , ow_divide_matrices_ew , ow_add_matrix_times_scalar , ow_add_matrix_times_scalar_2 , ow_add_int_matrix_to_matrix , multiply_matrices , multiply_by_transpose , multiply_with_transpose , multiply_by_own_transpose , get_dot_product_of_matrix_rows , get_dot_product_of_matrix_rows_2 , invert_matrix_elements , square_matrix_elements , exp_matrix_elements , log_matrix_elements , log_matrix_elements_2 , sqrt_matrix_elements , add_scalar_to_matrix , subtract_scalar_from_matrix , multiply_matrix_by_scalar , divide_matrix_by_scalar , ow_invert_matrix_elements , ow_square_matrix_elements , ow_exp_matrix_elements , ow_log_matrix_elements , ow_add_scalar_to_matrix , ow_subtract_scalar_from_matrix , ow_multiply_matrix_by_scalar , ow_divide_matrix_by_scalar , multiply_vector_and_matrix , multiply_matrix_and_vector , multiply_matrix_rows , add_row_vector_to_matrix , subtract_row_vector_from_matrix , multiply_matrix_by_row_vector_ew , divide_matrix_by_row_vector , ow_add_row_vector_to_matrix , ow_subtract_row_vector_from_matrix , ow_multiply_matrix_by_row_vector_ew , ow_divide_matrix_by_row_vector , ow_add_vector_to_matrix_row , ow_add_vector_to_matrix_col , ow_add_scalar_times_vector_to_matrix_row , ow_subtract_vector_from_matrix_row , ow_multiply_matrix_row_by_vector , ow_divide_matrix_row_by_vector , ow_multiply_matrix_col_by_vector , ow_add_scalar_to_matrix_row , ow_subtract_scalar_from_matrix_row , ow_multiply_matrix_row_by_scalar , ow_divide_matrix_row_by_scalar , add_col_vector_to_matrix , ow_add_col_vector_to_matrix , subtract_col_vector_from_matrix , ow_subtract_col_vector_from_matrix , multiply_matrix_by_col_vector_ew , ow_multiply_matrix_by_col_vector_ew , divide_matrix_by_col_vector , ow_divide_matrix_by_col_vector , ow_add_matrix_row_times_scalar , ow_add_matrix_rows_ew , ow_multiply_matrix_rows_ew , sum_matrix_elements , sum_matrix_row_elements , sum_matrix_col_elements , average_matrix_elements , ow_subtract_identity_matrix , do_matrix_recomposition , do_matrix_recomposition_2 , log_sum_log_matrix_elements , ow_exp_scale_by_sum_log_matrix_row , ow_add_matrix_row_to_vector , ow_get_abs_of_matrix , get_abs_of_matrix , get_euler_rotation_matrix , get_euler_homo_rotation_matrix , get_3d_rotation_matrix_1 , get_3d_rotation_matrix_2 , get_2d_rotation_matrix , get_3d_homo_rotation_matrix_1 , get_3d_homo_rotation_matrix_2 , get_2d_homo_rotation_matrix , get_3d_scaling_matrix_1 , get_3d_scaling_matrix_2 , get_3d_homo_scaling_matrix_1 , get_3d_homo_scaling_matrix_2 , get_3d_homo_translation_matrix_1 , get_3d_homo_translation_matrix_2