| // (C) Copyright John Maddock 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) |
| |
| #include <boost/limits.hpp> |
| #include <vector> |
| #include "mp_t.hpp" |
| |
| void write_table(unsigned max_exponent) |
| { |
| mp_t max = ldexp(mp_t(1), (int)max_exponent); |
| |
| std::vector<mp_t> factorials; |
| factorials.push_back(1); |
| |
| mp_t f(1); |
| unsigned i = 1; |
| |
| while(f < max) |
| { |
| factorials.push_back(f); |
| ++i; |
| f *= i; |
| } |
| |
| // |
| // now write out the results to cout: |
| // |
| std::cout << std::scientific << std::setprecision(40); |
| std::cout << " static const boost::array<T, " << factorials.size() << "> factorials = {\n"; |
| for(unsigned j = 0; j < factorials.size(); ++j) |
| std::cout << " " << factorials[j] << "L,\n"; |
| std::cout << " };\n\n"; |
| } |
| |
| |
| int main() |
| { |
| write_table(16384/*std::numeric_limits<float>::max_exponent*/); |
| } |