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

lapack_int LAPACKE_zunmrz_work (int matrix_order, char side, char trans, lapack_int m, lapack_int n, lapack_int k, lapack_int l, const lapack_complex_double *a, lapack_int lda, const lapack_complex_double *tau, lapack_complex_double *c, lapack_int ldc, lapack_complex_double *work, lapack_int lwork)

Function/Subroutine Documentation

lapack_int LAPACKE_zunmrz_work ( int  matrix_order,
char  side,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  k,
lapack_int  l,
const lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double tau,
lapack_complex_double c,
lapack_int  ldc,
lapack_complex_double work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_zunmrz_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_zunmrz( &side, &trans, &m, &n, &k, &l, a, &lda, tau, c, &ldc,
work, &lwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,k);
lapack_int ldc_t = MAX(1,m);
lapack_complex_double* a_t = NULL;
lapack_complex_double* c_t = NULL;
/* Check leading dimension(s) */
if( lda < m ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_zunmrz_work", info );
return info;
}
if( ldc < n ) {
info = -12;
LAPACKE_xerbla( "LAPACKE_zunmrz_work", info );
return info;
}
/* Query optimal working array(s) size if requested */
if( lwork == -1 ) {
LAPACK_zunmrz( &side, &trans, &m, &n, &k, &l, a, &lda_t, tau, c,
&ldc_t, work, &lwork, &info );
return (info < 0) ? (info - 1) : info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,m) );
if( a_t == NULL ) {
goto exit_level_0;
}
LAPACKE_malloc( sizeof(lapack_complex_double) * ldc_t * MAX(1,n) );
if( c_t == NULL ) {
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_zge_trans( matrix_order, k, m, a, lda, a_t, lda_t );
LAPACKE_zge_trans( matrix_order, m, n, c, ldc, c_t, ldc_t );
/* Call LAPACK function and adjust info */
LAPACK_zunmrz( &side, &trans, &m, &n, &k, &l, a_t, &lda_t, tau, c_t,
&ldc_t, work, &lwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
/* Release memory and exit */
LAPACKE_free( c_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_zunmrz_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_zunmrz_work", info );
}
return info;
}

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