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*****************************************************************************
* Contents: Native high-level C interface to LAPACK function cgejsv
* Author: Intel Corporation
*****************************************************************************/

#include "lapacke_utils.h"

lapack_int LAPACKE_cgejsv( int matrix_layout, char joba, char jobu, char jobv,
                           char jobr, char jobt, char jobp, lapack_int m,
                           lapack_int n, lapack_complex_float* a, lapack_int lda, float* sva,
                           lapack_complex_float* u, lapack_int ldu, lapack_complex_float* v, lapack_int ldv,
                           float* stat, lapack_int* istat )
{
    lapack_int info = 0;
    lapack_int lwork = (
                // 1.1
        (        LAPACKE_lsame( jobu, 'n' ) &&  LAPACKE_lsame( jobv, 'n' ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? 2*n+1 :

                //1.2
     (   (       LAPACKE_lsame( jobu, 'n' ) &&  LAPACKE_lsame( jobv, 'n' ) &&
              !( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? n*n+3*n :

                //2.1
    (   (      ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) )  &&
              !( LAPACKE_lsame( jobu, 'u') ||  LAPACKE_lsame( jobu, 'f' ) )&&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 3*n :


                //2.2
    (   (      ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) )  &&
              !( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' ) ) &&
              !( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 3*n :

               //3.1
     (   (      ( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' )) &&
              !( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' )) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))?  3*n :

               //3.2
     (   (      ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' )) &&
              !(LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' )) &&
              !(LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))?  3*n  :

              //4.1
     (  (       ( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' ) ) &&
               ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 5*n+2*n*n :

              //4.2
     (  (       ( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' ) ) &&
               ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? 4*n*n:
                       1) ) ) ) ) ) ) );
    lapack_int lrwork = (
                // 1.1
        (        LAPACKE_lsame( jobu, 'n' ) &&  LAPACKE_lsame( jobv, 'n' ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? MAX(7,n+2*m) :

                //1.2
     (   (        LAPACKE_lsame( jobu, 'n' ) &&  LAPACKE_lsame( jobv, 'n' ) &&
              !( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) )) ? MAX(7,2*n) :

                //2.1
    (   (      ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) )  &&
              !( LAPACKE_lsame( jobu, 'u') ||  LAPACKE_lsame( jobu, 'f' ) ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX( 7, n+ 2*m ) :


                //2.2
    (   (      ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) )  &&
              !( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' ) ) &&
              !( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX(7,2*n) :

               //3.1
     (   (      ( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' )) &&
              !( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' )) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))?  MAX( 7, n+ 2*m ) :

               //3.2
     (   (      ( LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' )) &&
              !(LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' )) &&
              !(LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))?  MAX(7,2*n)  :

              //4.1
     (  (       ( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' ) ) &&
               ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX( 7, n+ 2*m ) :

              //4.2
     (  (       ( LAPACKE_lsame( jobu, 'u' ) ||  LAPACKE_lsame( jobu, 'f' ) ) &&
               ( LAPACKE_lsame( jobv, 'v' ) ||  LAPACKE_lsame( jobv, 'j' ) ) &&
               ( LAPACKE_lsame( jobt, 't' ) ||  LAPACKE_lsame( joba, 'f' ) || LAPACKE_lsame( joba, 'g' ) ))? MAX(7,2*n) :
                       7) ) ) ) ) ) ) );
    lapack_int* iwork = NULL;
    float* rwork = NULL;
    lapack_complex_float* cwork = NULL;
    lapack_int i;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_cgejsv", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
            return -10;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(3,m+2*n) );
    if( iwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    lwork = MAX( lwork, 1 );
    { /* FIXUP LWORK */
        int want_u = LAPACKE_lsame( jobu, 'u' ) || LAPACKE_lsame( jobu, 'f' );
        int want_v = LAPACKE_lsame( jobv, 'v' ) || LAPACKE_lsame( jobv, 'j' );
        int want_sce = LAPACKE_lsame( joba, 'e' ) || LAPACKE_lsame( joba, 'g' );
        if( !want_u && !want_v && !want_sce )  lwork = MAX( lwork, 2*n+1 ); // 1.1
        if( !want_u && !want_v && want_sce )   lwork = MAX( lwork, n*n+3*n ); // 1.2
        if( want_u && LAPACKE_lsame( jobv, 'v' ) ) lwork = MAX( lwork, 5*n+2*n*n ); // 4.1
        if( want_u && LAPACKE_lsame( jobv, 'j' ) ) lwork = MAX( lwork, 4*n+n*n ); // 4.2
    }
    cwork = (lapack_complex_float*)LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
    if( cwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    lrwork = MAX3( lrwork, 7, n+2*m );
    rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_2;
    }
    /* Call middle-level interface */
    info = LAPACKE_cgejsv_work( matrix_layout, joba, jobu, jobv, jobr, jobt,
                                jobp, m, n, a, lda, sva, u, ldu, v, ldv, cwork,
                                lwork, rwork, lrwork, iwork );
    /* Backup significant data from working array(s) */
    for( i=0; i<7; i++ ) {
        stat[i] = rwork[i];
    }
    for( i=0; i<3; i++ ) {
        istat[i] = iwork[i];
    }
    /* Release memory and exit */
    LAPACKE_free( cwork );
exit_level_2:
    LAPACKE_free( rwork );
exit_level_1:
    LAPACKE_free( iwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_cgejsv", info );
    }
    return info;
}
