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drovector-dgbmatrix.hpp File Reference

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Functions

_drovector operator* (const drovector &vec, const dgbmatrix &mat)
 

Function Documentation

_drovector operator* ( const drovector vec,
const dgbmatrix mat 
)
inline

drovector*dgbmatrix operator

Definition at line 3 of file drovector-dgbmatrix.hpp.

References _(), drovector::array, dgbmatrix::array, dgbmatrix::kl, dgbmatrix::ku, drovector::l, dgbmatrix::m, and dgbmatrix::n.

4 {CPPL_VERBOSE_REPORT;
5 #ifdef CPPL_DEBUG
6  if(vec.l!=mat.m){
7  ERROR_REPORT;
8  std::cerr << "These vector and matrix can not make a product." << std::endl
9  << "Your input was (" << vec.l << ") * (" << mat.m << "x" << mat.n << ")." << std::endl;
10  exit(1);
11  }
12 #endif//CPPL_DEBUG
13 
14  drovector newvec(mat.n);
15  char trans ='T';
16  double alpha =1.;
17  CPPL_INT lda =mat.kl+mat.ku+1;
18  CPPL_INT inc =1;
19  double beta =0.;
20 
21  dgbmv_( &trans, &mat.m, &mat.n, &mat.kl, &mat.ku, &alpha, mat.array, &lda, vec.array, &inc, &beta, newvec.array, &inc );
22 
23  return _(newvec);
24 }
double * array
1D array to store vector data
Definition: drovector.hpp:11
CPPL_INT m
matrix row size
Definition: dgbmatrix.hpp:9
CPPL_INT l
vector size
Definition: drovector.hpp:9
CPPL_INT kl
lower band width
Definition: dgbmatrix.hpp:11
CPPL_INT ku
upper band width
Definition: dgbmatrix.hpp:12
double * array
1D array to store matrix data
Definition: dgbmatrix.hpp:13
Real Double-precision Row Vector Class.
Definition: drovector.hpp:3
CPPL_INT n
matrix column size
Definition: dgbmatrix.hpp:10
_dcovector _(dcovector &vec)