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#include <flens/lapack/interface/include/config.h>
namespace flens { namespace lapack {
extern "C" {
//-- dgeqrf --------------------------------------------------------------------
void
LAPACK_DECL(dgeqrf)(const INTEGER *M,
const INTEGER *N,
DOUBLE *A,
const INTEGER *LDA,
DOUBLE *TAU,
DOUBLE *WORK,
const INTEGER *LWORK,
INTEGER *INFO)
{
LAPACK_DEBUG_OUT("LAPACK INTERFACE: dgeqrf");
using std::max;
using std::min;
//
// Test the input parameters so that we pass LAPACK error checks
//
bool lQuery = (*LWORK==-1);
*INFO = 0;
if (*M<0) {
*INFO = -1;
} else if (*N<0) {
*INFO = -2;
} else if (*LDA<std::max(INTEGER(1), *M)) {
*INFO = -4;
} else if ((*LWORK<max(INTEGER(1), *N)) && (!lQuery)) {
*INFO = -7;
}
if (*INFO!=0) {
*INFO = -(*INFO);
LAPACK_ERROR("DGEQRF", INFO);
*INFO = -(*INFO);
return;
}
//
// Handle worksize query
//
if (lQuery) {
// TODO: implement qrf_wsq
ASSERT(0);
}
//
// Call FLENS implementation
//
DGeMatrixView _A = DFSView(*M, *N, *LDA, A);
DDenseVectorView _TAU = DArrayView(min(*M,*N), TAU, 1);
DDenseVectorView _WORK = DArrayView(*LWORK, WORK, 1);
qrf(_A, _TAU, _WORK);
}
//-- zgeqrf --------------------------------------------------------------------
void
LAPACK_DECL(zgeqrf)(const INTEGER *M,
const INTEGER *N,
DOUBLE_COMPLEX *A,
const INTEGER *LDA,
DOUBLE_COMPLEX *TAU,
DOUBLE_COMPLEX *WORK,
const INTEGER *LWORK,
INTEGER *INFO)
{
LAPACK_DEBUG_OUT("LAPACK INTERFACE: zgeqrf");
using std::max;
using std::min;
//
// Test the input parameters so that we pass LAPACK error checks
//
bool lQuery = (*LWORK==-1);
*INFO = 0;
if (*M<0) {
*INFO = -1;
} else if (*N<0) {
*INFO = -2;
} else if (*LDA<std::max(INTEGER(1), *M)) {
*INFO = -4;
} else if ((*LWORK<max(INTEGER(1), *N)) && (!lQuery)) {
*INFO = -7;
}
if (*INFO!=0) {
*INFO = -(*INFO);
LAPACK_ERROR("ZGEQRF", INFO);
*INFO = -(*INFO);
return;
}
//
// Handle worksize query
//
if (lQuery) {
// TODO: implement qrf_wsq
ASSERT(0);
}
//
// Call FLENS implementation
//
auto zA = reinterpret_cast<CXX_DOUBLE_COMPLEX *>(A);
auto zTAU = reinterpret_cast<CXX_DOUBLE_COMPLEX *>(TAU);
auto zWORK = reinterpret_cast<CXX_DOUBLE_COMPLEX *>(WORK);
ZGeMatrixView _A = ZFSView(*M, *N, *LDA, zA);
ZDenseVectorView _TAU = ZArrayView(min(*M,*N), zTAU, 1);
ZDenseVectorView _WORK = ZArrayView(*LWORK, zWORK, 1);
qrf(_A, _TAU, _WORK);
}
} // extern "C"
} } // namespace lapack, flens
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