LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_dorghr.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_dorghr (int matrix_order, lapack_int n, lapack_int ilo, lapack_int ihi, double *a, lapack_int lda, const double *tau)

Function/Subroutine Documentation

lapack_int LAPACKE_dorghr ( int  matrix_order,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
double *  a,
lapack_int  lda,
const double *  tau 
)

Definition at line 36 of file lapacke_dorghr.c.

{
lapack_int info = 0;
lapack_int lwork = -1;
double* work = NULL;
double work_query;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dorghr", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dge_nancheck( matrix_order, n, n, a, lda ) ) {
return -5;
}
if( LAPACKE_d_nancheck( n-1, tau, 1 ) ) {
return -7;
}
#endif
/* Query optimal working array(s) size */
info = LAPACKE_dorghr_work( matrix_order, n, ilo, ihi, a, lda, tau,
&work_query, lwork );
if( info != 0 ) {
goto exit_level_0;
}
lwork = (lapack_int)work_query;
/* Allocate memory for work arrays */
work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
if( work == NULL ) {
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_dorghr_work( matrix_order, n, ilo, ihi, a, lda, tau, work,
lwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dorghr", info );
}
return info;
}

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