1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2009 Gael Guennebaud <gael.guennebaud (at) inria.fr> 5 // Copyright (C) 2012 Chen-Pang He <jdh8 (at) ms63.hinet.net> 6 // 7 // This Source Code Form is subject to the terms of the Mozilla 8 // Public License v. 2.0. If a copy of the MPL was not distributed 9 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 10 11 #define SCALAR double 12 #define SCALAR_SUFFIX d 13 #define SCALAR_SUFFIX_UP "D" 14 #define ISCOMPLEX 0 15 16 #include "level1_impl.h" 17 #include "level1_real_impl.h" 18 #include "level2_impl.h" 19 #include "level2_real_impl.h" 20 #include "level3_impl.h" 21 22 double BLASFUNC(dsdot)(int* n, float* x, int* incx, float* y, int* incy) 23 { 24 if(*n<=0) return 0; 25 26 if(*incx==1 && *incy==1) return (vector(x,*n).cast<double>().cwiseProduct(vector(y,*n).cast<double>())).sum(); 27 else if(*incx>0 && *incy>0) return (vector(x,*n,*incx).cast<double>().cwiseProduct(vector(y,*n,*incy).cast<double>())).sum(); 28 else if(*incx<0 && *incy>0) return (vector(x,*n,-*incx).reverse().cast<double>().cwiseProduct(vector(y,*n,*incy).cast<double>())).sum(); 29 else if(*incx>0 && *incy<0) return (vector(x,*n,*incx).cast<double>().cwiseProduct(vector(y,*n,-*incy).reverse().cast<double>())).sum(); 30 else if(*incx<0 && *incy<0) return (vector(x,*n,-*incx).reverse().cast<double>().cwiseProduct(vector(y,*n,-*incy).reverse().cast<double>())).sum(); 31 else return 0; 32 } 33 34
