lapacke_sgbbrd.c

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* Contents: Native high-level C interface to LAPACK function sgbbrd
* Author: Intel Corporation
* Generated November 2015
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_sgbbrd( int matrix_layout, char vect, lapack_int m,
                           lapack_int n, lapack_int ncc, lapack_int kl,
                           lapack_int ku, float* ab, lapack_int ldab, float* d,
                           float* e, float* q, lapack_int ldq, float* pt,
                           lapack_int ldpt, float* c, lapack_int ldc )
{
    lapack_int info = 0;
    float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_sgbbrd", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_sgb_nancheck( matrix_layout, m, n, kl, ku, ab, ldab ) ) {
            return -8;
        }
        if( ncc != 0 ) {
            if( LAPACKE_sge_nancheck( matrix_layout, m, ncc, c, ldc ) ) {
                return -16;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*MAX(m,n)) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_sgbbrd_work( matrix_layout, vect, m, n, ncc, kl, ku, ab, ldab,
                                d, e, q, ldq, pt, ldpt, c, ldc, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_sgbbrd", info );
    }
    return info;
}