lapack_int LAPACKE_dsfrk_work( int matrix_layout, char transr, char uplo,
char trans, lapack_int n, lapack_int k,
double alpha, const double* a, lapack_int lda,
double beta, double* c )
{
lapack_int info = 0;
if( matrix_layout == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dsfrk( &transr, &uplo, &trans, &n, &k, &alpha, a, &lda, &beta,
c );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_layout == LAPACK_ROW_MAJOR ) {
lapack_int na = LAPACKE_lsame( trans, 'n' ) ? n : k;
lapack_int ka = LAPACKE_lsame( trans, 'n' ) ? k : n;
lapack_int lda_t = MAX(1,na);
double* a_t = NULL;
double* c_t = NULL;
/* Check leading dimension(s) */
if( lda < ka ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_dsfrk_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,ka) );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
c_t = (double*)
LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( c_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_layout, na, ka, a, lda, a_t, lda_t );
LAPACKE_dpf_trans( matrix_layout, transr, uplo, n, c, c_t );
/* Call LAPACK function and adjust info */
LAPACK_dsfrk( &transr, &uplo, &trans, &n, &k, &alpha, a_t, &lda_t,
&beta, c_t );
info = 0; /* LAPACK call is ok! */
/* Transpose output matrices */
LAPACKE_dpf_trans( LAPACK_COL_MAJOR, transr, uplo, n, c_t, c );
/* Release memory and exit */
LAPACKE_free( c_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dsfrk_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dsfrk_work", info );
}
return info;
}
lapack_int LAPACKE_dpftrs_work( int matrix_order, char transr, char uplo,
lapack_int n, lapack_int nrhs, const double* a,
double* b, lapack_int ldb )
{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dpftrs( &transr, &uplo, &n, &nrhs, a, b, &ldb, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldb_t = MAX(1,n);
double* b_t = NULL;
double* a_t = NULL;
/* Check leading dimension(s) */
if( ldb < nrhs ) {
info = -8;
LAPACKE_xerbla( "LAPACKE_dpftrs_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
if( b_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
a_t = (double*)
LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_1;
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
LAPACKE_dpf_trans( matrix_order, transr, uplo, n, a, a_t );
/* Call LAPACK function and adjust info */
LAPACK_dpftrs( &transr, &uplo, &n, &nrhs, a_t, b_t, &ldb_t, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
/* Release memory and exit */
LAPACKE_free( a_t );
exit_level_1:
LAPACKE_free( b_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dpftrs_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dpftrs_work", info );
}
return info;
}
lapack_int LAPACKE_dpftrf_work( int matrix_order, char transr, char uplo,
lapack_int n, double* a )
{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dpftrf( &transr, &uplo, &n, a, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
double* a_t = NULL;
/* Allocate memory for temporary array(s) */
a_t = (double*)
LAPACKE_malloc( sizeof(double) * ( MAX(1,n) * MAX(2,n+1) ) / 2 );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
/* Transpose input matrices */
LAPACKE_dpf_trans( matrix_order, transr, uplo, n, a, a_t );
/* Call LAPACK function and adjust info */
LAPACK_dpftrf( &transr, &uplo, &n, a_t, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_dpf_trans( LAPACK_COL_MAJOR, transr, uplo, n, a_t, a );
/* Release memory and exit */
LAPACKE_free( a_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dpftrf_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dpftrf_work", info );
}
return info;
}
