ecl_math

This package provides simple support to cmath, filling in holes or redefining in a c++ formulation where desirable.

Homepage: http://wiki.ros.org/ecl_math

Embedded Control Library

    This group includes various mathematical macros, constants and utility
    functions/functors.

Compiling & Linking

    Include the following at the top of any translation unit which
    requires this library:

#include <ecl/math.hpp>
// constants
using ecl::pi; // also pi_2, pi_4
// simple functions
using ecl::EuclideanNorm;
using ecl::isApprox;
using ecl::isApproxOrLessThan;
using ecl::sign; // also psign 
using ecl::cube_root; // only for real numbers/solutions

Since it is a collection of macros and headers only, no linking is required if you are only utilising this functionality.

Usage

Macros for PI

            Usually there will always be macros for pi defined in <i>math.h</i>, namely
            M_PI, M_PI_2, etc... (sometimes they're unavailable, e.g. windoze!).
            For typesafe definitions, the ecl defines a couple of these similarly in
            the ecl::math namespace.

Simple Functions

            Various regularly used functions are also present - usually in the form
            of functors (useful for passing around should it ever be necessary).

            - ecl::EuclideanNorm
            - ecl::isApprox
            - ecl::isApproxOrLessThan

Unit Tests

    - /src/test/constants.cpp
    - /src/test/fuzzy.cpp
    - /src/test/norms.cpp

ChangeLog

- <b>Dec 10</b> : fuzzy math.
- <b>Sep 10</b> : better detection/setting of pi constants on posix/non-posix platforms.
    - <b>Feb 10</b> : @ref ecl::EuclideanNorm "Euclidean norm" functor (currently only l2 norm).
    - <b>May 09</b> : Macros for pi undefined and c++ style @ref ecl::pi "pi" constants made available.