LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_cgeev_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_cgeev_work (int matrix_order, char jobvl, char jobvr, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *w, lapack_complex_float *vl, lapack_int ldvl, lapack_complex_float *vr, lapack_int ldvr, lapack_complex_float *work, lapack_int lwork, float *rwork)

Function/Subroutine Documentation

lapack_int LAPACKE_cgeev_work ( int  matrix_order,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float w,
lapack_complex_float vl,
lapack_int  ldvl,
lapack_complex_float vr,
lapack_int  ldvr,
lapack_complex_float work,
lapack_int  lwork,
float *  rwork 
)

Definition at line 36 of file lapacke_cgeev_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_cgeev( &jobvl, &jobvr, &n, a, &lda, w, vl, &ldvl, vr, &ldvr,
work, &lwork, rwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
lapack_int ldvl_t = MAX(1,n);
lapack_int ldvr_t = MAX(1,n);
lapack_complex_float* a_t = NULL;
lapack_complex_float* vl_t = NULL;
lapack_complex_float* vr_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -6;
LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
return info;
}
if( ldvl < n ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
return info;
}
if( ldvr < n ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
return info;
}
/* Query optimal working array(s) size if requested */
if( lwork == -1 ) {
LAPACK_cgeev( &jobvl, &jobvr, &n, a, &lda_t, w, vl, &ldvl_t, vr,
&ldvr_t, work, &lwork, rwork, &info );
return (info < 0) ? (info - 1) : info;
}
/* Allocate memory for temporary array(s) */
LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
goto exit_level_0;
}
if( LAPACKE_lsame( jobvl, 'v' ) ) {
ldvl_t * MAX(1,n) );
if( vl_t == NULL ) {
goto exit_level_1;
}
}
if( LAPACKE_lsame( jobvr, 'v' ) ) {
ldvr_t * MAX(1,n) );
if( vr_t == NULL ) {
goto exit_level_2;
}
}
/* Transpose input matrices */
LAPACKE_cge_trans( matrix_order, n, n, a, lda, a_t, lda_t );
/* Call LAPACK function and adjust info */
LAPACK_cgeev( &jobvl, &jobvr, &n, a_t, &lda_t, w, vl_t, &ldvl_t, vr_t,
&ldvr_t, work, &lwork, rwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
if( LAPACKE_lsame( jobvl, 'v' ) ) {
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
}
if( LAPACKE_lsame( jobvr, 'v' ) ) {
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
}
/* Release memory and exit */
if( LAPACKE_lsame( jobvr, 'v' ) ) {
LAPACKE_free( vr_t );
}
exit_level_2:
if( LAPACKE_lsame( jobvl, 'v' ) ) {
LAPACKE_free( vl_t );
}
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
}
return info;
}

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