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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/tr1/poly_hermite.tcc')
-rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/tr1/poly_hermite.tcc | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/tr1/poly_hermite.tcc b/gcc-4.4.3/libstdc++-v3/include/tr1/poly_hermite.tcc deleted file mode 100644 index d4825a31e..000000000 --- a/gcc-4.4.3/libstdc++-v3/include/tr1/poly_hermite.tcc +++ /dev/null @@ -1,124 +0,0 @@ -// Special functions -*- C++ -*- - -// Copyright (C) 2006, 2007, 2008, 2009 -// Free Software Foundation, Inc. -// -// This file is part of the GNU ISO C++ Library. This library is free -// software; you can redistribute it and/or modify it under the -// terms of the GNU General Public License as published by the -// Free Software Foundation; either version 3, or (at your option) -// any later version. -// -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// Under Section 7 of GPL version 3, you are granted additional -// permissions described in the GCC Runtime Library Exception, version -// 3.1, as published by the Free Software Foundation. - -// You should have received a copy of the GNU General Public License and -// a copy of the GCC Runtime Library Exception along with this program; -// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -// <http://www.gnu.org/licenses/>. - -/** @file tr1/poly_hermite.tcc - * This is an internal header file, included by other library headers. - * You should not attempt to use it directly. - */ - -// -// ISO C++ 14882 TR1: 5.2 Special functions -// - -// Written by Edward Smith-Rowland based on: -// (1) Handbook of Mathematical Functions, -// Ed. Milton Abramowitz and Irene A. Stegun, -// Dover Publications, Section 22 pp. 773-802 - -#ifndef _GLIBCXX_TR1_POLY_HERMITE_TCC -#define _GLIBCXX_TR1_POLY_HERMITE_TCC 1 - -namespace std -{ -namespace tr1 -{ - - // [5.2] Special functions - - // Implementation-space details. - namespace __detail - { - - /** - * @brief This routine returns the Hermite polynomial - * of order n: \f$ H_n(x) \f$ by recursion on n. - * - * The Hermite polynomial is defined by: - * @f[ - * H_n(x) = (-1)^n e^{x^2} \frac{d^n}{dx^n} e^{-x^2} - * @f] - * - * @param __n The order of the Hermite polynomial. - * @param __x The argument of the Hermite polynomial. - * @return The value of the Hermite polynomial of order n - * and argument x. - */ - template<typename _Tp> - _Tp - __poly_hermite_recursion(const unsigned int __n, const _Tp __x) - { - // Compute H_0. - _Tp __H_0 = 1; - if (__n == 0) - return __H_0; - - // Compute H_1. - _Tp __H_1 = 2 * __x; - if (__n == 1) - return __H_1; - - // Compute H_n. - _Tp __H_n, __H_nm1, __H_nm2; - unsigned int __i; - for (__H_nm2 = __H_0, __H_nm1 = __H_1, __i = 2; __i <= __n; ++__i) - { - __H_n = 2 * (__x * __H_nm1 + (__i - 1) * __H_nm2); - __H_nm2 = __H_nm1; - __H_nm1 = __H_n; - } - - return __H_n; - } - - - /** - * @brief This routine returns the Hermite polynomial - * of order n: \f$ H_n(x) \f$. - * - * The Hermite polynomial is defined by: - * @f[ - * H_n(x) = (-1)^n e^{x^2} \frac{d^n}{dx^n} e^{-x^2} - * @f] - * - * @param __n The order of the Hermite polynomial. - * @param __x The argument of the Hermite polynomial. - * @return The value of the Hermite polynomial of order n - * and argument x. - */ - template<typename _Tp> - inline _Tp - __poly_hermite(const unsigned int __n, const _Tp __x) - { - if (__isnan(__x)) - return std::numeric_limits<_Tp>::quiet_NaN(); - else - return __poly_hermite_recursion(__n, __x); - } - - } // namespace std::tr1::__detail -} -} - -#endif // _GLIBCXX_TR1_POLY_HERMITE_TCC |