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

lapack_int LAPACKE_sorcsd (int matrix_order, char jobu1, char jobu2, char jobv1t, char jobv2t, char trans, char signs, lapack_int m, lapack_int p, lapack_int q, float *x11, lapack_int ldx11, float *x12, lapack_int ldx12, float *x21, lapack_int ldx21, float *x22, lapack_int ldx22, float *theta, float *u1, lapack_int ldu1, float *u2, lapack_int ldu2, float *v1t, lapack_int ldv1t, float *v2t, lapack_int ldv2t)

Function/Subroutine Documentation

lapack_int LAPACKE_sorcsd ( int  matrix_order,
char  jobu1,
char  jobu2,
char  jobv1t,
char  jobv2t,
char  trans,
char  signs,
lapack_int  m,
lapack_int  p,
lapack_int  q,
float *  x11,
lapack_int  ldx11,
float *  x12,
lapack_int  ldx12,
float *  x21,
lapack_int  ldx21,
float *  x22,
lapack_int  ldx22,
float *  theta,
float *  u1,
lapack_int  ldu1,
float *  u2,
lapack_int  ldu2,
float *  v1t,
lapack_int  ldv1t,
float *  v2t,
lapack_int  ldv2t 
)

Definition at line 36 of file lapacke_sorcsd.c.

{
lapack_int info = 0;
lapack_int lwork = -1;
lapack_int* iwork = NULL;
float* work = NULL;
float work_query;
lapack_int nrows_x11, nrows_x12, nrows_x21, nrows_x22;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_sorcsd", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
nrows_x11 = ( LAPACKE_lsame( trans, 'n' ) ? p : q);
nrows_x12 = ( LAPACKE_lsame( trans, 'n' ) ? p : m-q);
nrows_x21 = ( LAPACKE_lsame( trans, 'n' ) ? m-p : q);
nrows_x22 = ( LAPACKE_lsame( trans, 'n' ) ? m-p : m-q);
if( LAPACKE_sge_nancheck( matrix_order, nrows_x11, q, x11, ldx11 ) ) {
return -11;
}
if( LAPACKE_sge_nancheck( matrix_order, nrows_x12, m-q, x12, ldx12 ) ) {
return -13;
}
if( LAPACKE_sge_nancheck( matrix_order, nrows_x21, q, x21, ldx21 ) ) {
return -15;
}
if( LAPACKE_sge_nancheck( matrix_order, nrows_x22, m-q, x22, ldx22 ) ) {
return -17;
}
#endif
/* Allocate memory for working array(s) */
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,m-q) );
if( iwork == NULL ) {
goto exit_level_0;
}
/* Query optimal working array(s) size */
info = LAPACKE_sorcsd_work( matrix_order, jobu1, jobu2, jobv1t, jobv2t,
trans, signs, m, p, q, x11, ldx11, x12, ldx12,
x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
ldu2, v1t, ldv1t, v2t, ldv2t, &work_query,
lwork, iwork );
if( info != 0 ) {
goto exit_level_1;
}
lwork = (lapack_int)work_query;
/* Allocate memory for work arrays */
work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_sorcsd_work( matrix_order, jobu1, jobu2, jobv1t, jobv2t,
trans, signs, m, p, q, x11, ldx11, x12, ldx12,
x21, ldx21, x22, ldx22, theta, u1, ldu1, u2,
ldu2, v1t, ldv1t, v2t, ldv2t, work, lwork,
iwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_1:
LAPACKE_free( iwork );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_sorcsd", info );
}
return info;
}

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