lapack_int LAPACKE_ztfsm( int matrix_layout, char transr, char side, char uplo,
char trans, char diag, lapack_int m, lapack_int n,
lapack_complex_double alpha,
const lapack_complex_double* a,
lapack_complex_double* b, lapack_int ldb )
{
if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_ztfsm", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
if( LAPACKE_get_nancheck() ) {
/* Optionally check input matrices for NaNs */
if( IS_Z_NONZERO(alpha) ) {
if( LAPACKE_ztf_nancheck( matrix_layout, transr, uplo, diag, n, a ) ) {
return -10;
}
}
if( LAPACKE_z_nancheck( 1, &alpha, 1 ) ) {
return -9;
}
if( IS_Z_NONZERO(alpha) ) {
if( LAPACKE_zge_nancheck( matrix_layout, m, n, b, ldb ) ) {
return -11;
}
}
}
#endif
return LAPACKE_ztfsm_work( matrix_layout, transr, side, uplo, trans, diag, m,
n, alpha, a, b, ldb );
}
lapack_int LAPACKE_ztfsm_work( int matrix_order, char transr, char side,
char uplo, char trans, char diag, lapack_int m,
lapack_int n, lapack_complex_double alpha,
const lapack_complex_double* a,
lapack_complex_double* b, lapack_int ldb )
{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_ztfsm( &transr, &side, &uplo, &trans, &diag, &m, &n, &alpha, a,
b, &ldb );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldb_t = MAX(1,m);
lapack_complex_double* b_t = NULL;
lapack_complex_double* a_t = NULL;
/* Check leading dimension(s) */
if( ldb < n ) {
info = -12;
LAPACKE_xerbla( "LAPACKE_ztfsm_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
b_t = (lapack_complex_double*)
LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
if( b_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
if( IS_Z_NONZERO(alpha) ) {
a_t = (lapack_complex_double*)
LAPACKE_malloc( sizeof(lapack_complex_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 */
if( IS_Z_NONZERO(alpha) ) {
LAPACKE_zge_trans( matrix_order, m, n, b, ldb, b_t, ldb_t );
}
if( IS_Z_NONZERO(alpha) ) {
LAPACKE_ztf_trans( matrix_order, transr, uplo, diag, n, a, a_t );
}
/* Call LAPACK function and adjust info */
LAPACK_ztfsm( &transr, &side, &uplo, &trans, &diag, &m, &n, &alpha, a_t,
b_t, &ldb_t );
info = 0; /* LAPACK call is ok! */
/* Transpose output matrices */
LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, b_t, ldb_t, b, ldb );
/* Release memory and exit */
if( IS_Z_NONZERO(alpha) ) {
LAPACKE_free( a_t );
}
exit_level_1:
LAPACKE_free( b_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_ztfsm_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_ztfsm_work", info );
}
return info;
}