IlmBase are a set of utility libraries released by ILM, and used in their OpenEXR implementation. Included in this package you can find: . * libHalf: a class (Half) for manipulating "half" values (16-bit floating point format) as if they were a built-in C++ data type. . * libIlmThread: a thread abstraction library on top of pthreads. . * libImath: a math library with support for matrices, 2d- and 3d-transformations, solvers for linear/quadratic/cubic equations, and more. . * libIex: an exception handling library.