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

lapack_int LAPACKE_cggsvd_work (int matrix_order, char jobu, char jobv, char jobq, lapack_int m, lapack_int n, lapack_int p, lapack_int *k, lapack_int *l, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, float *alpha, float *beta, lapack_complex_float *u, lapack_int ldu, lapack_complex_float *v, lapack_int ldv, lapack_complex_float *q, lapack_int ldq, lapack_complex_float *work, float *rwork, lapack_int *iwork)

Function/Subroutine Documentation

lapack_int LAPACKE_cggsvd_work ( int  matrix_order,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  n,
lapack_int  p,
lapack_int k,
lapack_int l,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
float *  alpha,
float *  beta,
lapack_complex_float u,
lapack_int  ldu,
lapack_complex_float v,
lapack_int  ldv,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float work,
float *  rwork,
lapack_int iwork 
)

Definition at line 36 of file lapacke_cggsvd_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_cggsvd( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a, &lda, b, &ldb,
alpha, beta, u, &ldu, v, &ldv, q, &ldq, work, rwork,
iwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,m);
lapack_int ldb_t = MAX(1,p);
lapack_int ldq_t = MAX(1,n);
lapack_int ldu_t = MAX(1,m);
lapack_int ldv_t = MAX(1,p);
lapack_complex_float* a_t = NULL;
lapack_complex_float* b_t = NULL;
lapack_complex_float* u_t = NULL;
lapack_complex_float* v_t = NULL;
lapack_complex_float* q_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
return info;
}
if( ldb < n ) {
info = -13;
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
return info;
}
if( ldq < n ) {
info = -21;
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
return info;
}
if( ldu < m ) {
info = -17;
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
return info;
}
if( ldv < p ) {
info = -19;
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
return 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;
}
LAPACKE_malloc( sizeof(lapack_complex_float) * ldb_t * MAX(1,n) );
if( b_t == NULL ) {
goto exit_level_1;
}
if( LAPACKE_lsame( jobu, 'u' ) ) {
ldu_t * MAX(1,m) );
if( u_t == NULL ) {
goto exit_level_2;
}
}
if( LAPACKE_lsame( jobv, 'v' ) ) {
ldv_t * MAX(1,p) );
if( v_t == NULL ) {
goto exit_level_3;
}
}
if( LAPACKE_lsame( jobq, 'q' ) ) {
ldq_t * MAX(1,n) );
if( q_t == NULL ) {
goto exit_level_4;
}
}
/* Transpose input matrices */
LAPACKE_cge_trans( matrix_order, m, n, a, lda, a_t, lda_t );
LAPACKE_cge_trans( matrix_order, p, n, b, ldb, b_t, ldb_t );
/* Call LAPACK function and adjust info */
LAPACK_cggsvd( &jobu, &jobv, &jobq, &m, &n, &p, k, l, a_t, &lda_t, b_t,
&ldb_t, alpha, beta, u_t, &ldu_t, v_t, &ldv_t, q_t,
&ldq_t, work, rwork, iwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
LAPACKE_cge_trans( LAPACK_COL_MAJOR, p, n, b_t, ldb_t, b, ldb );
if( LAPACKE_lsame( jobu, 'u' ) ) {
LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, m, u_t, ldu_t, u, ldu );
}
if( LAPACKE_lsame( jobv, 'v' ) ) {
LAPACKE_cge_trans( LAPACK_COL_MAJOR, p, p, v_t, ldv_t, v, ldv );
}
if( LAPACKE_lsame( jobq, 'q' ) ) {
LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
}
/* Release memory and exit */
if( LAPACKE_lsame( jobq, 'q' ) ) {
LAPACKE_free( q_t );
}
exit_level_4:
if( LAPACKE_lsame( jobv, 'v' ) ) {
LAPACKE_free( v_t );
}
exit_level_3:
if( LAPACKE_lsame( jobu, 'u' ) ) {
LAPACKE_free( u_t );
}
exit_level_2:
LAPACKE_free( b_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_cggsvd_work", info );
}
return info;
}

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