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#include <flens/lapack/interface/include/config.h>
namespace flens { namespace lapack {
extern "C" {
//-- dgeqrf --------------------------------------------------------------------
void
LAPACK_DECL(dgeqp3)(const INTEGER *M,
const INTEGER *N,
DOUBLE *A,
const INTEGER *LDA,
INTEGER *JPVT,
DOUBLE *TAU,
DOUBLE *WORK,
const INTEGER *LWORK,
INTEGER *INFO)
{
LAPACK_DEBUG_OUT("LAPACK INTERFACE: dgeqp3");
using std::max;
using std::min;
//
// Test the input parameters so that we pass LAPACK error checks
//
*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<3*(*N)+1) {
*INFO = -8;
}
if (*INFO!=0) {
*INFO = -(*INFO);
LAPACK_ERROR("DGEQP3", INFO);
*INFO = -(*INFO);
return;
}
DGeMatrixView _A = DFSView(*M, *N, *LDA, A);
IDenseVectorView _JPVT = IArrayView(*N, JPVT, 1);
DDenseVectorView _TAU = DArrayView(min(*M,*N), TAU, 1);
DDenseVectorView _WORK = DArrayView(*LWORK, WORK, 1);
qp3(_A, _JPVT, _TAU, _WORK);
}
//-- zgeqrf --------------------------------------------------------------------
void
LAPACK_DECL(zgeqp3)(const INTEGER *M,
const INTEGER *N,
DOUBLE_COMPLEX *A,
const INTEGER *LDA,
INTEGER *JPVT,
DOUBLE_COMPLEX *TAU,
DOUBLE_COMPLEX *WORK,
const INTEGER *LWORK,
DOUBLE *RWORK,
INTEGER *INFO)
{
LAPACK_DEBUG_OUT("LAPACK INTERFACE: zgeqp3");
using std::max;
using std::min;
//
// Test the input parameters so that we pass LAPACK error checks
//
*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<(*N)+1) {
*INFO = -8;
}
if (*INFO!=0) {
*INFO = -(*INFO);
LAPACK_ERROR("ZGEQP3", INFO);
*INFO = -(*INFO);
return;
}
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);
IDenseVectorView _JPVT = IArrayView(*N, JPVT, 1);
ZDenseVectorView _TAU = ZArrayView(min(*M,*N), zTAU, 1);
ZDenseVectorView _WORK = ZArrayView(*LWORK, zWORK, 1);
DDenseVectorView _RWORK = DArrayView(2*(*N), RWORK, 1);
qp3(_A, _JPVT, _TAU, _WORK, _RWORK);
}
} // extern "C"
} } // namespace lapack, flens
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