NAME

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 log_vector
(
	Vector **target_vpp,
	const Vector *vp
);

DESCRIPTION

This routine calculates the element-wise log of a vector with the KJB library creation semantics. 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 is negative.

DISCLAIMER

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

AUTHOR

Kobus Barnard

DOCUMENTER