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

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*****************************************************************************
* Contents: Native middle-level C interface to LAPACK function sgedmdq
* Author: Intel Corporation
*****************************************************************************/

#include "lapacke_utils.h"

lapack_int LAPACKE_sgedmdq_work( int matrix_layout, char jobs, char jobz,
                                 char jobr, char jobq, char jobt, char jobf,
                                 lapack_int whtsvd, lapack_int m, lapack_int n,
                                 float* f, lapack_int ldf, float* x,
                                 lapack_int ldx, float* y, lapack_int ldy,
                                 lapack_int nrnk, float* tol, lapack_int k,
                                 float* reig, float* imeig, float* z,
                                 lapack_int ldz, float* res, float* b,
                                 lapack_int ldb, float* v, lapack_int ldv,
                                 float* s, lapack_int lds, float* work,
                                 lapack_int lwork, lapack_int* iwork,
                                 lapack_int liwork )
{
    lapack_int info = 0;
    if( matrix_layout == LAPACK_COL_MAJOR ) {
        /* Call LAPACK function and adjust info */
        LAPACK_sgedmdq( &jobs, &jobz, &jobr, &jobq, &jobt, &jobf, &whtsvd, &m,
                        &n, f, &ldf, x, &ldx, y, &ldy, &nrnk, tol, &k, reig, imeig,
                        z, &ldz, res, b, &ldb, v, &ldv, s, &lds,
                        work, &lwork, iwork, &liwork, &info );
        if( info < 0 ) {
            info = info - 1;
        }
    } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
        lapack_int ldf_t = MAX(1,m);
        lapack_int ldx_t = MAX(1,m);
        lapack_int ldy_t = MAX(1,m);
        lapack_int ldz_t = MAX(1,m);
        lapack_int ldb_t = MAX(1,m);
        lapack_int ldv_t = MAX(1,m);
        lapack_int lds_t = MAX(1,m);
        float* f_t = NULL;
        float* x_t = NULL;
        float* y_t = NULL;
        float* z_t = NULL;
        float* b_t = NULL;
        float* v_t = NULL;
        float* s_t = NULL;
        /* Check leading dimension(s) */
        if( ldf < n ) {
            info = -12;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        if( ldx < n ) {
            info = -14;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        if( ldy < n ) {
            info = -16;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        if( ldz < n ) {
            info = -23;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        if( ldb < n ) {
            info = -26;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        if( ldv < n ) {
            info = -28;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        if( lds < n ) {
            info = -30;
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
            return info;
        }
        /* Query optimal working array(s) size if requested */
        if( lwork == -1 || liwork == -1 ) {
            LAPACK_sgedmdq( &jobs, &jobz, &jobr, &jobq, &jobt, &jobf, &whtsvd, &m,
                            &n, f, &ldf, x, &ldx, y, &ldy, &nrnk, tol, &k, reig, imeig,
                            z, &ldz, res, b, &ldb, v, &ldv, s, &lds,
                            work, &lwork, iwork, &liwork, &info );
            return (info < 0) ? (info - 1) : info;
        }
        /* Allocate memory for temporary array(s) */
        f_t = (float*)LAPACKE_malloc( sizeof(float) * ldf_t * MAX(1,n) );
        if( f_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_0;
        }
        x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,n) );
        if( x_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_1;
        }
        y_t = (float*)LAPACKE_malloc( sizeof(float) * ldy_t * MAX(1,n) );
        if( y_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_2;
        }
        z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,n) );
        if( z_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_3;
        }
        b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
        if( b_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_4;
        }
        v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,n) );
        if( v_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_5;
        }
        s_t = (float*)LAPACKE_malloc( sizeof(float) * lds_t * MAX(1,n) );
        if( s_t == NULL ) {
            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
            goto exit_level_6;
        }
        /* Transpose input matrices */
        LAPACKE_sge_trans( matrix_layout, m, n, f, ldf, f_t, ldf_t );
        LAPACKE_sge_trans( matrix_layout, m, n, x, ldx, x_t, ldx_t );
        LAPACKE_sge_trans( matrix_layout, m, n, y, ldy, y_t, ldy_t );
        LAPACKE_sge_trans( matrix_layout, m, n, z, ldz, z_t, ldz_t );
        LAPACKE_sge_trans( matrix_layout, m, n, b, ldb, b_t, ldb_t );
        LAPACKE_sge_trans( matrix_layout, m, n, v, ldv, v_t, ldv_t );
        LAPACKE_sge_trans( matrix_layout, m, n, s, lds, s_t, lds_t );
        /* Call LAPACK function and adjust info */
        LAPACK_sgedmdq( &jobs, &jobz, &jobr, &jobq, &jobt, &jobf, &whtsvd, &m,
                        &n, f, &ldf, x, &ldx, y, &ldy, &nrnk, tol, &k, reig, imeig,
                        z, &ldz, res, b, &ldb, v, &ldv, s, &lds,
                        work, &lwork, iwork, &liwork, &info );
        if( info < 0 ) {
            info = info - 1;
        }
        /* Transpose output matrices */
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, f_t, ldf_t, f, ldf );
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, x_t, ldx_t, x, ldx );
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, y_t, ldy_t, y, ldy );
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, z_t, ldz_t, z, ldz );
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, b_t, ldb_t, b, ldb );
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, v_t, ldv_t, v, ldv );
        LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, s_t, lds_t, s, lds );
        /* Release memory and exit */
        LAPACKE_free( s_t );
exit_level_6:
        LAPACKE_free( v_t );
exit_level_5:
        LAPACKE_free( b_t );
exit_level_4:
        LAPACKE_free( z_t );
exit_level_3:
        LAPACKE_free( y_t );
exit_level_2:
        LAPACKE_free( x_t );
exit_level_1:
        LAPACKE_free( f_t );
exit_level_0:
        if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
            LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
        }
    } else {
        info = -1;
        LAPACKE_xerbla( "LAPACKE_sgedmdq_work", info );
    }
    return info;
}