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dgbmatrix-dcovector.hpp
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00001 //=============================================================================
00002 /*! dgbmatrix*dcovector operator */
00003 inline _dcovector operator*(const dgbmatrix& mat, const dcovector& vec)
00004 {VERBOSE_REPORT;
00005 #ifdef  CPPL_DEBUG
00006   if(mat.n!=vec.l){
00007     ERROR_REPORT;
00008     std::cerr << "These matrix and vector can not make a product." << std::endl
00009               << "Your input was (" << mat.m << "x" << mat.n << ") * (" << vec.l << ")." << std::endl;
00010     exit(1);
00011   }
00012 #endif//CPPL_DEBUG
00013   
00014   dcovector newvec(mat.m);
00015   dgbmv_( 'n', mat.m, mat.n, mat.kl, mat.ku, 1.0, mat.array,
00016           mat.kl+mat.ku+1, vec.array, 1, 0.0, newvec.array, 1 );
00017   
00018   return _(newvec);
00019 }
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