NAME

ow_log_vector - Calculates the element-wise log of a vector.

SYNOPSIS

#include "m/m_vec_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_vector(Vector *vp);

DESCRIPTION

This routine calculates the element-wise log of a vector, overwiting the input vector with the result. If an element is zero, then LOG_ZERO is used. LOG_ZERO is suffiently negative number that exp(LOG_ZERO) is zero. If an element is negative, then this routine fails.

RETURNS

NO_ERROR on success, and ERROR on failure, with an error message being set. THis routine will fail if any of the element of the input vector are negative

DISCLAIMER

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

AUTHOR

Kobus Barnard

DOCUMENTER