Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

boost/math/tools/user.hpp

// Copyright John Maddock 2007.
// Copyright Paul A. Bristow 2007.

// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_MATH_TOOLS_USER_HPP
#define BOOST_MATH_TOOLS_USER_HPP

// This file can be modified by the user to change the default policies.
// See "Changing the Policy Defaults" in documentation.

// define this if the platform has no long double functions,
// or if the long double versions have only double precision:
//
// #define BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
//
// Performance tuning options:
//
// #define BOOST_MATH_POLY_METHOD 3
// #define BOOST_MATH_RATIONAL_METHOD 3
//
// The maximum order of polynomial that will be evaluated
// via an unrolled specialisation:
//
// #define BOOST_MATH_MAX_POLY_ORDER 17
//
// decide whether to store constants as integers or reals:
//
// #define BOOST_MATH_INT_TABLE_TYPE(RT, IT) IT

//
// Default policies follow:
//
// Domain errors:
//
// #define BOOST_MATH_DOMAIN_ERROR_POLICY throw_on_error
//
// Pole errors:
//
// #define BOOST_MATH_POLE_ERROR_POLICY throw_on_error
//
// Overflow Errors:
//
// #define BOOST_MATH_OVERFLOW_ERROR_POLICY throw_on_error
//
// Internal Evaluation Errors:
//
// #define BOOST_MATH_EVALUATION_ERROR_POLICY throw_on_error
//
// Underfow:
//
// #define BOOST_MATH_UNDERFLOW_ERROR_POLICY ignore_error
//
// Denorms:
//
// #define BOOST_MATH_DENORM_ERROR_POLICY ignore_error
//
// Max digits to use for internal calculations:
//
// #define BOOST_MATH_DIGITS10_POLICY 0
//
// Promote floats to doubles internally?
//
// #define BOOST_MATH_PROMOTE_FLOAT_POLICY true
//
// Promote doubles to long double internally:
//
// #define BOOST_MATH_PROMOTE_DOUBLE_POLICY true
//
// What do discrete quantiles return?
//
// #define BOOST_MATH_DISCRETE_QUANTILE_POLICY integer_round_outwards
//
// If a function is mathematically undefined
// (for example the Cauchy distribution has no mean),
// then do we stop the code from compiling?
//
// #define BOOST_MATH_ASSERT_UNDEFINED_POLICY true
//
// Maximum series iterstions permitted:
//
// #define BOOST_MATH_MAX_SERIES_ITERATION_POLICY 1000000
//
// Maximum root finding steps permitted:
//
// define BOOST_MATH_MAX_ROOT_ITERATION_POLICY 200

#endif // BOOST_MATH_TOOLS_USER_HPP