OpenBLAS/lapack-netlib/LAPACKE/src/lapacke_dlascl.c

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* Contents: Native high-level C interface to LAPACK function dlaswp
* Author: Intel Corporation
* Generated November, 2011
*****************************************************************************/

#include "lapacke_utils.h"

lapack_int LAPACKE_dlascl( int matrix_layout, char type, lapack_int kl,
                           lapack_int ku, double cfrom, double cto, 
                           lapack_int m, lapack_int n, double* a, 
                           lapack_int lda )
{
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dlascl", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    switch (type) {
    case 'G':
       if( LAPACKE_dge_nancheck( matrix_layout, lda, n, a, lda ) ) {
           return -9;
           }
        break;
    case 'L':
       // TYPE = 'L' - lower triangular matrix.
       if( LAPACKE_dtr_nancheck( matrix_layout, 'L', 'N', n, a, lda ) ) {
           return -9;
          }
        break;
    case 'U':
       // TYPE = 'U' - upper triangular matrix
       if( LAPACKE_dtr_nancheck( matrix_layout, 'U', 'N', n, a, lda ) ) {
           return -9;
           } 
        break;
    case 'H':
       // TYPE = 'H' - upper Hessenberg matrix   
       if( LAPACKE_dhs_nancheck( matrix_layout, n, a, lda ) ) {
           return -9;
           }    
        break;
    case 'B':
       // TYPE = 'B' - A is a symmetric band matrix with lower bandwidth KL
       //             and upper bandwidth KU and with the only the lower
       //             half stored.   
       if( LAPACKE_dsb_nancheck( matrix_layout, 'L', n, kl, a, lda ) ) {
           return -9;
           }
         break;
   case 'Q':
       // TYPE = 'Q' - A is a symmetric band matrix with lower bandwidth KL
       //             and upper bandwidth KU and with the only the upper
       //             half stored.   
       if( LAPACKE_dsb_nancheck( matrix_layout, 'U', n, ku, a, lda ) ) {
           return -9;
           }
        break;
    case 'Z':
       // TYPE = 'Z' -  A is a band matrix with lower bandwidth KL and upper
       //             bandwidth KU. See DGBTRF for storage details.        
       if( LAPACKE_dgb_nancheck( matrix_layout, n, n, kl, kl+ku, a, lda ) ) {
           return -6;
           }
        break;
    }
#endif
    return LAPACKE_dlascl_work( matrix_layout, type, kl, ku, cfrom, cto, m,  n, a, lda );
}