elem_math.h File Reference

Elementary mathematical functions - header file. More...

#include <itpp/base/help_functions.h>
#include <itpp/base/converters.h>
#include <cstdlib>
#include <itpp/itexports.h>

Go to the source code of this file.

Namespaces
namespace	itpp
	itpp namespace

Functions
double	itpp::sqr (double x)
	Square of x.
double	itpp::sqr (const std::complex< double > &x)
	Absolute square of complex-valued x, ||x||^2.
vec	itpp::sqr (const vec &x)
	Square of elements.
mat	itpp::sqr (const mat &x)
	Square of elements.
vec	itpp::sqr (const cvec &x)
	Absolute square of elements.
mat	itpp::sqr (const cmat &x)
	Absolute square of elements.
vec	itpp::abs (const vec &x)
	Absolute value.
mat	itpp::abs (const mat &x)
	Absolute value.
ivec	itpp::abs (const ivec &x)
	Absolute value.
imat	itpp::abs (const imat &x)
	Absolute value.
vec	itpp::abs (const cvec &x)
	Absolute value.
mat	itpp::abs (const cmat &x)
	Absolute value.
double	itpp::sign (double x)
	Signum function.
vec	itpp::sign (const vec &x)
	Signum function.
mat	itpp::sign (const mat &x)
	Signum function.
double	itpp::sgn (double x)
	Signum function.
vec	itpp::sgn (const vec &x)
	Signum function.
mat	itpp::sgn (const mat &x)
	Signum function.
int	itpp::sign_i (int x)
	Signum function.
ivec	itpp::sign_i (const ivec &x)
	Signum function.
imat	itpp::sign_i (const imat &x)
	Signum function.
int	itpp::sgn_i (int x)
	Signum function.
ivec	itpp::sgn_i (const ivec &x)
	Signum function.
imat	itpp::sgn_i (const imat &x)
	Signum function.
int	itpp::sign_i (double x)
	Signum function.
vec	itpp::sqrt (const vec &x)
	Square root of the elements.
mat	itpp::sqrt (const mat &x)
	Square root of the elements.
double	itpp::gamma (double x)
	Deprecated gamma function - please use tgamma() instead.
vec	itpp::gamma (const vec &x)
	Deprecated gamma function for vectors. Will be changed to tgamma().
mat	itpp::gamma (const mat &x)
	Deprecated gamma function for matrices. Will be changed to tgamma().
double	itpp::rem (double x, double y)
	The reminder of the division x/y.
vec	itpp::rem (const vec &x, double y)
	Elementwise reminder of the division x/y for vec and double.
vec	itpp::rem (double x, const vec &y)
	Elementwise reminder of the division x/y for double and vec.
mat	itpp::rem (const mat &x, double y)
	Elementwise reminder of the division x/y for mat and double.
mat	itpp::rem (double x, const mat &y)
	Elementwise reminder of the division x/y for double and mat.
int	itpp::mod (int k, int n)
	Calculates the modulus, i.e. the signed reminder after division.
double	itpp::fact (int index)
	Calculates factorial coefficient for index <= 170.
double	itpp::binom (int n, int k)
	Compute the binomial coefficient "n over k".
int	itpp::binom_i (int n, int k)
	Compute the binomial coefficient "n over k".
double	itpp::log_binom (int n, int k)
	Compute the base 10 logarithm of the binomial coefficient "n over k".
int	itpp::gcd (int a, int b)
	Compute the greatest common divisor (GCD) g of the elements a and b.
vec	itpp::real (const cvec &x)
	Real part of complex values.
mat	itpp::real (const cmat &x)
	Real part of complex values.
vec	itpp::imag (const cvec &x)
	Imaginary part of complex values.
mat	itpp::imag (const cmat &x)
	Imaginary part of complex values.
vec	itpp::arg (const cvec &x)
	Argument (angle)
mat	itpp::arg (const cmat &x)
	Argument (angle)
vec	itpp::angle (const cvec &x)
	Angle.
mat	itpp::angle (const cmat &x)
	Angle.
cvec	itpp::conj (const cvec &x)
	Conjugate of complex value.
cmat	itpp::conj (const cmat &x)
	Conjugate of complex value.

Detailed Description

Elementary mathematical functions - header file.

Author

Tony Ottosson and Adam Piatyszek

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Copyright (C) 1995-2010 (see AUTHORS file for a list of contributors)

This file is part of IT++ - a C++ library of mathematical, signal processing, speech processing, and communications classes and functions.

IT++ is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

IT++ is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with IT++. If not, see http://www.gnu.org/licenses/.

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Definition in file elem_math.h.