LAPACK  3.5.0
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lapacke_zgebak_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_zgebak_work (int matrix_order, char job, char side, lapack_int n, lapack_int ilo, lapack_int ihi, const double *scale, lapack_int m, lapack_complex_double *v, lapack_int ldv)

Function/Subroutine Documentation

lapack_int LAPACKE_zgebak_work ( int  matrix_order,
char  job,
char  side,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
const double *  scale,
lapack_int  m,
lapack_complex_double v,
lapack_int  ldv 
)

Definition at line 36 of file lapacke_zgebak_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_zgebak( &job, &side, &n, &ilo, &ihi, scale, &m, v, &ldv, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldv_t = MAX(1,n);
lapack_complex_double* v_t = NULL;
/* Check leading dimension(s) */
if( ldv < m ) {
info = -10;
LAPACKE_xerbla( "LAPACKE_zgebak_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_double) * ldv_t * MAX(1,m) );
if( v_t == NULL ) {
goto exit_level_0;
}
/* Transpose input matrices */
LAPACKE_zge_trans( matrix_order, n, m, v, ldv, v_t, ldv_t );
/* Call LAPACK function and adjust info */
LAPACK_zgebak( &job, &side, &n, &ilo, &ihi, scale, &m, v_t, &ldv_t,
&info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, m, v_t, ldv_t, v, ldv );
/* Release memory and exit */
LAPACKE_free( v_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_zgebak_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_zgebak_work", info );
}
return info;
}

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