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lapacke_cunghr_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_cunghr_work (int matrix_order, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_float *a, lapack_int lda, const lapack_complex_float *tau, lapack_complex_float *work, lapack_int lwork)

Function/Subroutine Documentation

lapack_int LAPACKE_cunghr_work ( int  matrix_order,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_float a,
lapack_int  lda,
const lapack_complex_float tau,
lapack_complex_float work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_cunghr_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_cunghr( &n, &ilo, &ihi, a, &lda, tau, work, &lwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
lapack_complex_float* a_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -6;
LAPACKE_xerbla( "LAPACKE_cunghr_work", info );
return info;
}
/* Query optimal working array(s) size if requested */
if( lwork == -1 ) {
LAPACK_cunghr( &n, &ilo, &ihi, a, &lda_t, tau, work, &lwork,
&info );
return (info < 0) ? (info - 1) : info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
goto exit_level_0;
}
/* Transpose input matrices */
LAPACKE_cge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
/* Call LAPACK function and adjust info */
LAPACK_cunghr( &n, &ilo, &ihi, a_t, &lda_t, tau, work, &lwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
/* Release memory and exit */
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_cunghr_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_cunghr_work", info );
}
return info;
}

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