lapacke_zggglm_work.c
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00001 /*****************************************************************************
00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
00004 
00005   Redistribution and use in source and binary forms, with or without
00006   modification, are permitted provided that the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice,
00009       this list of conditions and the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright
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00014       may be used to endorse or promote products derived from this software
00015       without specific prior written permission.
00016 
00017   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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00028 ******************************************************************************
00029 * Contents: Native middle-level C interface to LAPACK function zggglm
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_zggglm_work( int matrix_order, lapack_int n, lapack_int m,
00038                                 lapack_int p, lapack_complex_double* a,
00039                                 lapack_int lda, lapack_complex_double* b,
00040                                 lapack_int ldb, lapack_complex_double* d,
00041                                 lapack_complex_double* x,
00042                                 lapack_complex_double* y,
00043                                 lapack_complex_double* work, lapack_int lwork )
00044 {
00045     lapack_int info = 0;
00046     if( matrix_order == LAPACK_COL_MAJOR ) {
00047         /* Call LAPACK function and adjust info */
00048         LAPACK_zggglm( &n, &m, &p, a, &lda, b, &ldb, d, x, y, work, &lwork,
00049                        &info );
00050         if( info < 0 ) {
00051             info = info - 1;
00052         }
00053     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00054         lapack_int lda_t = MAX(1,n);
00055         lapack_int ldb_t = MAX(1,n);
00056         lapack_complex_double* a_t = NULL;
00057         lapack_complex_double* b_t = NULL;
00058         /* Check leading dimension(s) */
00059         if( lda < m ) {
00060             info = -6;
00061             LAPACKE_xerbla( "LAPACKE_zggglm_work", info );
00062             return info;
00063         }
00064         if( ldb < p ) {
00065             info = -8;
00066             LAPACKE_xerbla( "LAPACKE_zggglm_work", info );
00067             return info;
00068         }
00069         /* Query optimal working array(s) size if requested */
00070         if( lwork == -1 ) {
00071             LAPACK_zggglm( &n, &m, &p, a, &lda_t, b, &ldb_t, d, x, y, work,
00072                            &lwork, &info );
00073             return (info < 0) ? (info - 1) : info;
00074         }
00075         /* Allocate memory for temporary array(s) */
00076         a_t = (lapack_complex_double*)
00077             LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,m) );
00078         if( a_t == NULL ) {
00079             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00080             goto exit_level_0;
00081         }
00082         b_t = (lapack_complex_double*)
00083             LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,p) );
00084         if( b_t == NULL ) {
00085             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00086             goto exit_level_1;
00087         }
00088         /* Transpose input matrices */
00089         LAPACKE_zge_trans( matrix_order, n, m, a, lda, a_t, lda_t );
00090         LAPACKE_zge_trans( matrix_order, n, p, b, ldb, b_t, ldb_t );
00091         /* Call LAPACK function and adjust info */
00092         LAPACK_zggglm( &n, &m, &p, a_t, &lda_t, b_t, &ldb_t, d, x, y, work,
00093                        &lwork, &info );
00094         if( info < 0 ) {
00095             info = info - 1;
00096         }
00097         /* Transpose output matrices */
00098         LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, m, a_t, lda_t, a, lda );
00099         LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, p, b_t, ldb_t, b, ldb );
00100         /* Release memory and exit */
00101         LAPACKE_free( b_t );
00102 exit_level_1:
00103         LAPACKE_free( a_t );
00104 exit_level_0:
00105         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00106             LAPACKE_xerbla( "LAPACKE_zggglm_work", info );
00107         }
00108     } else {
00109         info = -1;
00110         LAPACKE_xerbla( "LAPACKE_zggglm_work", info );
00111     }
00112     return info;
00113 }


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