00001 /* 00002 ------------------------------------------------------------------- 00003 00004 Copyright (C) 2006, 2007, 2008, Andrew W. Steiner 00005 00006 This file is part of O2scl. 00007 00008 O2scl is free software; you can redistribute it and/or modify 00009 it under the terms of the GNU General Public License as published by 00010 the Free Software Foundation; either version 3 of the License, or 00011 (at your option) any later version. 00012 00013 O2scl is distributed in the hope that it will be useful, 00014 but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00016 GNU General Public License for more details. 00017 00018 You should have received a copy of the GNU General Public License 00019 along with O2scl. If not, see <http://www.gnu.org/licenses/>. 00020 00021 ------------------------------------------------------------------- 00022 */ 00023 #ifndef O2SCL_GSL_INTE_QAGS_H 00024 #define O2SCL_GSL_INTE_QAGS_H 00025 00026 #include <o2scl/inte.h> 00027 #include <o2scl/gsl_inte_qag.h> 00028 00029 #ifndef DOXYGENP 00030 namespace o2scl { 00031 #endif 00032 00033 /** \brief Integrate a function with a singularity (GSL) 00034 */ 00035 template<class param_t, class func_t> class gsl_inte_qags : 00036 public gsl_inte_singular<param_t,func_t> { 00037 00038 public: 00039 00040 /** \brief Integrate function \c func from \c a to \c b. 00041 */ 00042 virtual double integ(func_t &func, double a, double b, param_t &pa) { 00043 double res, err; 00044 integ_err(func,a,b,pa,res,err); 00045 this->interror=err; 00046 return res; 00047 } 00048 00049 /** \brief Integrate function \c func from \c a to \c b and place 00050 the result in \c res and the error in \c err 00051 */ 00052 virtual int integ_err(func_t &func, double a, double b, 00053 param_t &pa, double &res, double &err2) { 00054 00055 double fv1[11], fv2[11]; 00056 00057 int status=qags(func,11,o2scl_inte_qag_coeffs::qk21_xgk, 00058 o2scl_inte_qag_coeffs::qk21_wg, 00059 o2scl_inte_qag_coeffs::qk21_wgk, 00060 fv1,fv2,a,b,this->tolx,this->tolf,this->wkspace, 00061 &res,&err2,pa); 00062 00063 return status; 00064 00065 } 00066 00067 00068 }; 00069 00070 #ifndef DOXYGENP 00071 } 00072 #endif 00073 00074 #endif
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