lapack_int LAPACKE_zsytrf( int matrix_order, char uplo, lapack_int n,
lapack_complex_double* a, lapack_int lda,
lapack_int* ipiv )
{
lapack_int info = 0;
lapack_int lwork = -1;
lapack_complex_double* work = NULL;
lapack_complex_double work_query;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_zsytrf", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_zsy_nancheck( matrix_order, uplo, n, a, lda ) ) {
return -4;
}
#endif
/* Query optimal working array(s) size */
info = LAPACKE_zsytrf_work( matrix_order, uplo, n, a, lda, ipiv,
&work_query, lwork );
if( info != 0 ) {
goto exit_level_0;
}
lwork = LAPACK_Z2INT( work_query );
/* Allocate memory for work arrays */
work = (lapack_complex_double*)
LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
if( work == NULL ) {
info = LAPACK_WORK_MEMORY_ERROR;
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_zsytrf_work( matrix_order, uplo, n, a, lda, ipiv, work,
lwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_zsytrf", info );
}
return info;
}
int main(void)
{
/* Local scalars */
char uplo, uplo_i;
lapack_int n, n_i;
lapack_int lda, lda_i;
lapack_int lda_r;
lapack_int lwork, lwork_i;
lapack_int info, info_i;
lapack_int i;
int failed;
/* Local arrays */
lapack_complex_double *a = NULL, *a_i = NULL;
lapack_int *ipiv = NULL, *ipiv_i = NULL;
lapack_complex_double *work = NULL, *work_i = NULL;
lapack_complex_double *a_save = NULL;
lapack_int *ipiv_save = NULL;
lapack_complex_double *a_r = NULL;
/* Iniitialize the scalar parameters */
init_scalars_zsytrf( &uplo, &n, &lda, &lwork );
lda_r = n+2;
uplo_i = uplo;
n_i = n;
lda_i = lda;
lwork_i = lwork;
/* Allocate memory for the LAPACK routine arrays */
a = (lapack_complex_double *)
LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
ipiv = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
work = (lapack_complex_double *)
LAPACKE_malloc( lwork * sizeof(lapack_complex_double) );
/* Allocate memory for the C interface function arrays */
a_i = (lapack_complex_double *)
LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
ipiv_i = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
work_i = (lapack_complex_double *)
LAPACKE_malloc( lwork * sizeof(lapack_complex_double) );
/* Allocate memory for the backup arrays */
a_save = (lapack_complex_double *)
LAPACKE_malloc( lda*n * sizeof(lapack_complex_double) );
ipiv_save = (lapack_int *)LAPACKE_malloc( n * sizeof(lapack_int) );
/* Allocate memory for the row-major arrays */
a_r = (lapack_complex_double *)
LAPACKE_malloc( n*(n+2) * sizeof(lapack_complex_double) );
/* Initialize input arrays */
init_a( lda*n, a );
init_ipiv( n, ipiv );
init_work( lwork, work );
/* Backup the ouptut arrays */
for( i = 0; i < lda*n; i++ ) {
a_save[i] = a[i];
}
for( i = 0; i < n; i++ ) {
ipiv_save[i] = ipiv[i];
}
/* Call the LAPACK routine */
zsytrf_( &uplo, &n, a, &lda, ipiv, work, &lwork, &info );
/* Initialize input data, call the column-major middle-level
* interface to LAPACK routine and check the results */
for( i = 0; i < lda*n; i++ ) {
a_i[i] = a_save[i];
}
for( i = 0; i < n; i++ ) {
ipiv_i[i] = ipiv_save[i];
}
for( i = 0; i < lwork; i++ ) {
work_i[i] = work[i];
}
info_i = LAPACKE_zsytrf_work( LAPACK_COL_MAJOR, uplo_i, n_i, a_i, lda_i,
ipiv_i, work_i, lwork_i );
failed = compare_zsytrf( a, a_i, ipiv, ipiv_i, info, info_i, lda, n );
if( failed == 0 ) {
printf( "PASSED: column-major middle-level interface to zsytrf\n" );
} else {
printf( "FAILED: column-major middle-level interface to zsytrf\n" );
}
/* Initialize input data, call the column-major high-level
* interface to LAPACK routine and check the results */
for( i = 0; i < lda*n; i++ ) {
a_i[i] = a_save[i];
}
for( i = 0; i < n; i++ ) {
ipiv_i[i] = ipiv_save[i];
}
for( i = 0; i < lwork; i++ ) {
work_i[i] = work[i];
}
info_i = LAPACKE_zsytrf( LAPACK_COL_MAJOR, uplo_i, n_i, a_i, lda_i,
ipiv_i );
failed = compare_zsytrf( a, a_i, ipiv, ipiv_i, info, info_i, lda, n );
if( failed == 0 ) {
printf( "PASSED: column-major high-level interface to zsytrf\n" );
} else {
printf( "FAILED: column-major high-level interface to zsytrf\n" );
}
/* Initialize input data, call the row-major middle-level
* interface to LAPACK routine and check the results */
for( i = 0; i < lda*n; i++ ) {
a_i[i] = a_save[i];
}
for( i = 0; i < n; i++ ) {
ipiv_i[i] = ipiv_save[i];
}
for( i = 0; i < lwork; i++ ) {
work_i[i] = work[i];
}
LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
info_i = LAPACKE_zsytrf_work( LAPACK_ROW_MAJOR, uplo_i, n_i, a_r, lda_r,
ipiv_i, work_i, lwork_i );
LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
failed = compare_zsytrf( a, a_i, ipiv, ipiv_i, info, info_i, lda, n );
if( failed == 0 ) {
printf( "PASSED: row-major middle-level interface to zsytrf\n" );
} else {
printf( "FAILED: row-major middle-level interface to zsytrf\n" );
}
/* Initialize input data, call the row-major high-level
* interface to LAPACK routine and check the results */
for( i = 0; i < lda*n; i++ ) {
a_i[i] = a_save[i];
}
for( i = 0; i < n; i++ ) {
ipiv_i[i] = ipiv_save[i];
}
for( i = 0; i < lwork; i++ ) {
work_i[i] = work[i];
}
/* Init row_major arrays */
LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_i, lda, a_r, n+2 );
info_i = LAPACKE_zsytrf( LAPACK_ROW_MAJOR, uplo_i, n_i, a_r, lda_r,
ipiv_i );
LAPACKE_zge_trans( LAPACK_ROW_MAJOR, n, n, a_r, n+2, a_i, lda );
failed = compare_zsytrf( a, a_i, ipiv, ipiv_i, info, info_i, lda, n );
if( failed == 0 ) {
printf( "PASSED: row-major high-level interface to zsytrf\n" );
} else {
printf( "FAILED: row-major high-level interface to zsytrf\n" );
}
/* Release memory */
if( a != NULL ) {
LAPACKE_free( a );
}
if( a_i != NULL ) {
LAPACKE_free( a_i );
}
if( a_r != NULL ) {
LAPACKE_free( a_r );
}
if( a_save != NULL ) {
LAPACKE_free( a_save );
}
if( ipiv != NULL ) {
LAPACKE_free( ipiv );
}
if( ipiv_i != NULL ) {
LAPACKE_free( ipiv_i );
}
if( ipiv_save != NULL ) {
LAPACKE_free( ipiv_save );
}
if( work != NULL ) {
LAPACKE_free( work );
}
if( work_i != NULL ) {
LAPACKE_free( work_i );
}
return 0;
}