| 修订版 | 8c7c25238ed835851b897abf5e6c76393092faad (tree) |
|---|---|
| 时间 | 2013-01-22 05:19:05 |
| 作者 | Katsuhiko Nishimra <ktns.87@gmai...> |
| Commiter | Katsuhiko Nishimra |
Call boost::math::factorial in MolDS_base::Factorial if available. #30557
git-svn-id: https://svn.sourceforge.jp/svnroot/molds/branches/automake@1240 1136aad2-a195-0410-b898-f5ea1d11b9d8
src/base/MathUtilities.cpp (diff)| @@ -23,10 +23,13 @@ | ||
| 23 | 23 | #include<math.h> |
| 24 | 24 | #include<stdexcept> |
| 25 | 25 | #include<boost/format.hpp> |
| 26 | +#include"config.h" | |
| 27 | +#ifdef HAVE_BOOST_MATH_SPECIAL_FUNCTIONS_FACTORIALS_HPP | |
| 28 | +#include<boost/math/special_functions/factorials.hpp> | |
| 29 | +#endif | |
| 26 | 30 | #include"PrintController.h" |
| 27 | 31 | #include"MolDSException.h" |
| 28 | 32 | #include"Uncopyable.h" |
| 29 | -#include"config.h" | |
| 30 | 33 | #include"../wrappers/Lapack.h" |
| 31 | 34 | #include"Enums.h" |
| 32 | 35 | #include"MathUtilities.h" |
| @@ -42,12 +45,16 @@ int Factorial(int n){ | ||
| 42 | 45 | ss << "Error in base::MathUtility::Factorial: n<0 \n"; |
| 43 | 46 | throw MolDSException(ss.str()); |
| 44 | 47 | } |
| 48 | +#ifdef HAVE_BOOST_MATH_SPECIAL_FUNCTIONS_FACTORIALS_HPP | |
| 49 | + return static_cast<int>(boost::math::factorial<double>(n)); | |
| 50 | +#else | |
| 45 | 51 | else if (n>1){ |
| 46 | 52 | return n*Factorial(n-1); |
| 47 | 53 | } |
| 48 | 54 | else{ |
| 49 | 55 | return 1; |
| 50 | 56 | } |
| 57 | +#endif | |
| 51 | 58 | } |
| 52 | 59 | |
| 53 | 60 | // nCk |
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