This group includes various mathematical macros, constants and utility functions/functors.
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.
Usually there will always be macros for pi defined in math.h, 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.
Various regularly used functions are also present - usually in the form of functors (useful for passing around should it ever be necessary).