Creal is an exact real arithmetic library for Objective Caml.
This module implements exact real arithmetic, following Valerie
Menissier-Morain Ph.D. thesis (http://www-calfor.lip6.fr/~vmm/).
A real x is represented as a function giving, for any n, an
approximation zn/4^n of x such that |zn/4^n - x| < 1, where zn is an
arbitrary precision integer (of type Gmp.Z.t).
Coercions from type int, Gmp.Z.t, Gmp.Q.t, basic operations (addition,
subtraction, multiplication, division, power, square root) and
transcendental functions (sin, cos, tan, log, exp, arcsin, arccos,
etc.) and a few constants (pi, e) are provided.
A small reverse-polish calculator is provided to test the library.
Written by Jean-Christophe Filliatre.