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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ***************************************************************************** * Contents: Native middle-level C interface to LAPACK function clarfb * Author: Intel Corporation * Generated December 2016 *****************************************************************************/ #include "lapacke_utils.h" lapack_int LAPACKE_clarfb_work( int matrix_layout, char side, char trans, char direct, char storev, lapack_int m, lapack_int n, lapack_int k, const lapack_complex_float* v, lapack_int ldv, const lapack_complex_float* t, lapack_int ldt, lapack_complex_float* c, lapack_int ldc, lapack_complex_float* work, lapack_int ldwork ) { lapack_int info = 0; lapack_int nrows_v, ncols_v; lapack_int ldc_t, ldt_t, ldv_t; lapack_complex_float *v_t = NULL, *t_t = NULL, *c_t = NULL; if( matrix_layout == LAPACK_COL_MAJOR ) { /* Call LAPACK function and adjust info */ LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v, &ldv, t, &ldt, c, &ldc, work, &ldwork ); if( info < 0 ) { info = info - 1; } } else if( matrix_layout == LAPACK_ROW_MAJOR ) { nrows_v = ( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( side, 'l' ) ) ? m : ( ( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( side, 'r' ) ) ? n : ( LAPACKE_lsame( storev, 'r' ) ? k : 1) ); ncols_v = LAPACKE_lsame( storev, 'c' ) ? k : ( ( LAPACKE_lsame( storev, 'r' ) && LAPACKE_lsame( side, 'l' ) ) ? m : ( ( LAPACKE_lsame( storev, 'r' ) && LAPACKE_lsame( side, 'r' ) ) ? n : 1) ); ldc_t = MAX(1,m); ldt_t = MAX(1,k); ldv_t = MAX(1,nrows_v); /* Check leading dimension(s) */ if( ldc < n ) { info = -14; LAPACKE_xerbla( "LAPACKE_clarfb_work", info ); return info; } if( ldt < k ) { info = -12; LAPACKE_xerbla( "LAPACKE_clarfb_work", info ); return info; } if( ldv < ncols_v ) { info = -10; LAPACKE_xerbla( "LAPACKE_clarfb_work", info ); return info; } /* Allocate memory for temporary array(s) */ v_t = (lapack_complex_float*) LAPACKE_malloc( sizeof(lapack_complex_float) * ldv_t * MAX(1,ncols_v) ); if( v_t == NULL ) { info = LAPACK_TRANSPOSE_MEMORY_ERROR; goto exit_level_0; } t_t = (lapack_complex_float*) LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,k) ); if( t_t == NULL ) { info = LAPACK_TRANSPOSE_MEMORY_ERROR; goto exit_level_1; } c_t = (lapack_complex_float*) LAPACKE_malloc( sizeof(lapack_complex_float) * ldc_t * MAX(1,n) ); if( c_t == NULL ) { info = LAPACK_TRANSPOSE_MEMORY_ERROR; goto exit_level_2; } /* Transpose input matrices */ if( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( direct, 'f' ) ) { LAPACKE_ctr_trans( matrix_layout, 'l', 'u', k, v, ldv, v_t, ldv_t ); LAPACKE_cge_trans( matrix_layout, nrows_v-k, ncols_v, &v[k*ldv], ldv, &v_t[k], ldv_t ); } else if( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( direct, 'b' ) ) { if( k > nrows_v ) { LAPACKE_xerbla( "LAPACKE_clarfb_work", -8 ); return -8; } LAPACKE_ctr_trans( matrix_layout, 'u', 'u', k, &v[(nrows_v-k)*ldv], ldv, &v_t[nrows_v-k], ldv_t ); LAPACKE_cge_trans( matrix_layout, nrows_v-k, ncols_v, v, ldv, v_t, ldv_t ); } else if( LAPACKE_lsame( storev, 'r' ) && LAPACKE_lsame( direct, 'f' ) ) { LAPACKE_ctr_trans( matrix_layout, 'u', 'u', k, v, ldv, v_t, ldv_t ); LAPACKE_cge_trans( matrix_layout, nrows_v, ncols_v-k, &v[k], ldv, &v_t[k*ldv_t], ldv_t ); } else if( LAPACKE_lsame( storev, 'r' ) && LAPACKE_lsame( direct, 'b' ) ) { if( k > ncols_v ) { LAPACKE_xerbla( "LAPACKE_clarfb_work", -8 ); return -8; } LAPACKE_ctr_trans( matrix_layout, 'l', 'u', k, &v[ncols_v-k], ldv, &v_t[(ncols_v-k)*ldv_t], ldv_t ); LAPACKE_cge_trans( matrix_layout, nrows_v, ncols_v-k, v, ldv, v_t, ldv_t ); } LAPACKE_cge_trans( matrix_layout, k, k, t, ldt, t_t, ldt_t ); LAPACKE_cge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t ); /* Call LAPACK function and adjust info */ LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v_t, &ldv_t, t_t, &ldt_t, c_t, &ldc_t, work, &ldwork ); info = 0; /* LAPACK call is ok! */ /* Transpose output matrices */ LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc ); /* Release memory and exit */ LAPACKE_free( c_t ); exit_level_2: LAPACKE_free( t_t ); exit_level_1: LAPACKE_free( v_t ); exit_level_0: if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) { LAPACKE_xerbla( "LAPACKE_clarfb_work", info ); } } else { info = -1; LAPACKE_xerbla( "LAPACKE_clarfb_work", info ); } return info; }