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

lapack_int LAPACKE_cupgtr_work (int matrix_order, char uplo, lapack_int n, const lapack_complex_float *ap, const lapack_complex_float *tau, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *work)

Function/Subroutine Documentation

lapack_int LAPACKE_cupgtr_work ( int  matrix_order,
char  uplo,
lapack_int  n,
const lapack_complex_float ap,
const lapack_complex_float tau,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float work 
)

Definition at line 36 of file lapacke_cupgtr_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_cupgtr( &uplo, &n, ap, tau, q, &ldq, work, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldq_t = MAX(1,n);
lapack_complex_float* q_t = NULL;
lapack_complex_float* ap_t = NULL;
/* Check leading dimension(s) */
if( ldq < n ) {
info = -7;
LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_float) * ldq_t * MAX(1,n) );
if( q_t == NULL ) {
goto exit_level_0;
}
( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( ap_t == NULL ) {
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_cpp_trans( matrix_order, uplo, n, ap, ap_t );
/* Call LAPACK function and adjust info */
LAPACK_cupgtr( &uplo, &n, ap_t, tau, q_t, &ldq_t, work, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
/* Release memory and exit */
LAPACKE_free( ap_t );
exit_level_1:
LAPACKE_free( q_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_cupgtr_work", info );
}
return info;
}

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