//==============================================================================
void AztecDVBR_Matrix::matvec(const Aztec_LSVector& x, Aztec_LSVector& y) const {
// AztecDVBR_Matrix::matvec --- form y = Ax
assert(isLoaded());
int *proc_config = amap_->getProcConfig();
double *b = (double*)x.startPointer();
double *c = (double*)y.startPointer();
AZ_VBR_matvec_mult(b, c, Amat_, proc_config);
return;
}
/**=========================================================================**/
double Aztec_LSVector::dotProd (const Aztec_LSVector& y) const {
/** Aztec_LSVector::dotProd --- returns dot product of two vectors **/
int N_update = amap_->localSize();
double *pv = (double*)localCoeffs_;
double *py = (double*)y.startPointer();
double dot = AZ_gdot(N_update, pv, py, amap_->getProcConfig());
return dot;
}
/**=========================================================================**/
void Aztec_LSVector::addVec (double s, const Aztec_LSVector& c) {
/** Aztec_LSVector::addVec --- add multiple of a vector: s*c **/
int N_update = amap_->localSize();
int one = 1;
double *pv = localCoeffs_;
double *pc = (double*)c.startPointer();
DAXPY_F77(&N_update,&s,pc,&one,pv,&one);
return;
}
/**=========================================================================**/
void Aztec_LSVector::assign(const Aztec_LSVector& rhs) {
if ((amap_->globalSize() != rhs.amap_->globalSize()) ||
(amap_->localSize() != rhs.amap_->localSize()) ) {
fei::console_out() << "Aztec_LSVector::assign: ERROR, incompatible maps."
<< " Aborting assignment." << FEI_ENDL;
return;
}
int N_update = amap_->localSize();
double *pr = (double*)rhs.startPointer();
for(int i=0; i<N_update; ++i) {
localCoeffs_[i] = pr[i];
}
return;
}
