LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_dbdsqr.c File Reference
#include "lapacke_utils.h"
Include dependency graph for lapacke_dbdsqr.c:

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Functions/Subroutines

lapack_int LAPACKE_dbdsqr (int matrix_order, char uplo, lapack_int n, lapack_int ncvt, lapack_int nru, lapack_int ncc, double *d, double *e, double *vt, lapack_int ldvt, double *u, lapack_int ldu, double *c, lapack_int ldc)

Function/Subroutine Documentation

lapack_int LAPACKE_dbdsqr ( int  matrix_order,
char  uplo,
lapack_int  n,
lapack_int  ncvt,
lapack_int  nru,
lapack_int  ncc,
double *  d,
double *  e,
double *  vt,
lapack_int  ldvt,
double *  u,
lapack_int  ldu,
double *  c,
lapack_int  ldc 
)

Definition at line 36 of file lapacke_dbdsqr.c.

{
lapack_int info = 0;
double* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dbdsqr", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( ncc != 0 ) {
if( LAPACKE_dge_nancheck( matrix_order, n, ncc, c, ldc ) ) {
return -13;
}
}
if( LAPACKE_d_nancheck( n, d, 1 ) ) {
return -7;
}
if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
return -8;
}
if( nru != 0 ) {
if( LAPACKE_dge_nancheck( matrix_order, nru, n, u, ldu ) ) {
return -11;
}
}
if( ncvt != 0 ) {
if( LAPACKE_dge_nancheck( matrix_order, n, ncvt, vt, ldvt ) ) {
return -9;
}
}
#endif
/* Allocate memory for working array(s) */
work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,4*n) );
if( work == NULL ) {
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_dbdsqr_work( matrix_order, uplo, n, ncvt, nru, ncc, d, e, vt,
ldvt, u, ldu, c, ldc, work );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dbdsqr", info );
}
return info;
}

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