/////////////////////////////////////////////////////////////// // Copyright 2013 John Maddock. Distributed under the Boost // Software License, Version 1.0. (See accompanying file // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_ //[cpp_bin_float_eg #include #include #include int main() { using namespace boost::multiprecision; // Operations at fixed precision and full numeric_limits support: cpp_bin_float_100 b = 2; std::cout << std::numeric_limits::digits << std::endl; std::cout << std::numeric_limits::digits10 << std::endl; // We can use any C++ std lib function, lets print all the digits as well: std::cout << std::setprecision(std::numeric_limits::max_digits10) << log(b) << std::endl; // print log(2) // We can also use any function from Boost.Math: std::cout << boost::math::tgamma(b) << std::endl; // These even work when the argument is an expression template: std::cout << boost::math::tgamma(b * b) << std::endl; // And since we have an extended exponent range we can generate some really large // numbers here (4.0238726007709377354370243e+2564): std::cout << boost::math::tgamma(cpp_bin_float_100(1000)) << std::endl; return 0; } //]