unchecked_factorial.hpp
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HPP
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// Copyright John Maddock 2006.// 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_SP_UC_FACTORIALS_HPP#define BOOST_MATH_SP_UC_FACTORIALS_HPP#ifdef _MSC_VER#pragma once#endif#include <boost/array.hpp>#ifdef BOOST_MSVC#pragma warning(push) // Temporary until lexical cast fixed.#pragma warning(disable: 4127 4701)#endif#include <boost/lexical_cast.hpp>#ifdef BOOST_MSVC#pragma warning(pop)#endif#include <boost/config/no_tr1/cmath.hpp>#include <boost/math/special_functions/math_fwd.hpp>namespace boost { namespace math{// Forward declarations:template <class T>struct max_factorial;// efinitions:template <>inline float unchecked_factorial<float>(unsigned i BOOST_MATH_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(float)){ static const boost::array<float, 35> factorials = {{ 1.0F, 1.0F, 2.0F, 6.0F, 24.0F, 120.0F, 720.0F, 5040.0F, 40320.0F, 362880.0F, 3628800.0F, 39916800.0F, 479001600.0F, 6227020800.0F, 87178291200.0F, 1307674368000.0F, 20922789888000.0F, 355687428096000.0F, 6402373705728000.0F, 121645100408832000.0F, 0.243290200817664e19F, 0.5109094217170944e20F, 0.112400072777760768e22F, 0.2585201673888497664e23F, 0.62044840173323943936e24F, 0.15511210043330985984e26F, 0.403291461126605635584e27F, 0.10888869450418352160768e29F, 0.304888344611713860501504e30F, 0.8841761993739701954543616e31F, 0.26525285981219105863630848e33F, 0.822283865417792281772556288e34F, 0.26313083693369353016721801216e36F, 0.868331761881188649551819440128e37F, 0.29523279903960414084761860964352e39F, }}; return factorials[i];}template <>struct max_factorial<float>{ BOOST_STATIC_CONSTANT(unsigned, value = 34);};template <>inline long double unchecked_factorial<long double>(unsigned i BOOST_MATH_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(long double)){ static const boost::array<long double, 171> factorials = {{ 1L, 1L, 2L, 6L, 24L, 120L, 720L, 5040L, 40320L, 362880.0L, 3628800.0L, 39916800.0L, 479001600.0L, 6227020800.0L, 87178291200.0L, 1307674368000.0L, 20922789888000.0L, 355687428096000.0L, 6402373705728000.0L, 121645100408832000.0L, 0.243290200817664e19L, 0.5109094217170944e20L, 0.112400072777760768e22L, 0.2585201673888497664e23L, 0.62044840173323943936e24L, 0.15511210043330985984e26L, 0.403291461126605635584e27L, 0.10888869450418352160768e29L, 0.304888344611713860501504e30L, 0.8841761993739701954543616e31L, 0.26525285981219105863630848e33L, 0.822283865417792281772556288e34L, 0.26313083693369353016721801216e36L, 0.868331761881188649551819440128e37L, 0.29523279903960414084761860964352e39L, 0.103331479663861449296666513375232e41L, 0.3719933267899012174679994481508352e42L, 0.137637530912263450463159795815809024e44L, 0.5230226174666011117600072241000742912e45L, 0.203978820811974433586402817399028973568e47L, 0.815915283247897734345611269596115894272e48L, 0.3345252661316380710817006205344075166515e50L, 0.1405006117752879898543142606244511569936e52L, 0.6041526306337383563735513206851399750726e53L, 0.265827157478844876804362581101461589032e55L, 0.1196222208654801945619631614956577150644e57L, 0.5502622159812088949850305428800254892962e58L, 0.2586232415111681806429643551536119799692e60L, 0.1241391559253607267086228904737337503852e62L, 0.6082818640342675608722521633212953768876e63L, 0.3041409320171337804361260816606476884438e65L, 0.1551118753287382280224243016469303211063e67L, 0.8065817517094387857166063685640376697529e68L, 0.427488328406002556429801375338939964969e70L, 0.2308436973392413804720927426830275810833e72L, 0.1269640335365827592596510084756651695958e74L, 0.7109985878048634518540456474637249497365e75L, 0.4052691950487721675568060190543232213498e77L, 0.2350561331282878571829474910515074683829e79L, 0.1386831185456898357379390197203894063459e81L, 0.8320987112741390144276341183223364380754e82L, 0.507580213877224798800856812176625227226e84L, 0.3146997326038793752565312235495076408801e86L, 0.1982608315404440064116146708361898137545e88L, 0.1268869321858841641034333893351614808029e90L, 0.8247650592082470666723170306785496252186e91L, 0.5443449390774430640037292402478427526443e93L, 0.3647111091818868528824985909660546442717e95L, 0.2480035542436830599600990418569171581047e97L, 0.1711224524281413113724683388812728390923e99L, 0.1197857166996989179607278372168909873646e101L, 0.8504785885678623175211676442399260102886e102L, 0.6123445837688608686152407038527467274078e104L, 0.4470115461512684340891257138125051110077e106L, 0.3307885441519386412259530282212537821457e108L, 0.2480914081139539809194647711659403366093e110L, 0.188549470166605025498793226086114655823e112L, 0.1451830920282858696340707840863082849837e114L, 0.1132428117820629783145752115873204622873e116L, 0.8946182130782975286851441715398316520698e117L, 0.7156945704626380229481153372318653216558e119L, 0.5797126020747367985879734231578109105412e121L, 0.4753643337012841748421382069894049466438e123L, 0.3945523969720658651189747118012061057144e125L, 0.3314240134565353266999387579130131288001e127L, 0.2817104114380550276949479442260611594801e129L, 0.2422709538367273238176552320344125971528e131L, 0.210775729837952771721360051869938959523e133L, 0.1854826422573984391147968456455462843802e135L, 0.1650795516090846108121691926245361930984e137L, 0.1485715964481761497309522733620825737886e139L, 0.1352001527678402962551665687594951421476e141L, 0.1243841405464130725547532432587355307758e143L, 0.1156772507081641574759205162306240436215e145L, 0.1087366156656743080273652852567866010042e147L, 0.103299784882390592625997020993947270954e149L, 0.9916779348709496892095714015418938011582e150L, 0.9619275968248211985332842594956369871234e152L, 0.942689044888324774562618574305724247381e154L, 0.9332621544394415268169923885626670049072e156L, 0.9332621544394415268169923885626670049072e158L, 0.9425947759838359420851623124482936749562e160L, 0.9614466715035126609268655586972595484554e162L, 0.990290071648618040754671525458177334909e164L, 0.1029901674514562762384858386476504428305e167L, 0.1081396758240290900504101305800329649721e169L, 0.1146280563734708354534347384148349428704e171L, 0.1226520203196137939351751701038733888713e173L, 0.132464181945182897449989183712183259981e175L, 0.1443859583202493582204882102462797533793e177L, 0.1588245541522742940425370312709077287172e179L, 0.1762952551090244663872161047107075788761e181L, 0.1974506857221074023536820372759924883413e183L, 0.2231192748659813646596607021218715118256e185L, 0.2543559733472187557120132004189335234812e187L, 0.2925093693493015690688151804817735520034e189L,
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