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

lapack_int LAPACKE_dspgvd (int matrix_order, lapack_int itype, char jobz, char uplo, lapack_int n, double *ap, double *bp, double *w, double *z, lapack_int ldz)

Function/Subroutine Documentation

lapack_int LAPACKE_dspgvd ( int  matrix_order,
lapack_int  itype,
char  jobz,
char  uplo,
lapack_int  n,
double *  ap,
double *  bp,
double *  w,
double *  z,
lapack_int  ldz 
)

Definition at line 36 of file lapacke_dspgvd.c.

{
lapack_int info = 0;
lapack_int liwork = -1;
lapack_int lwork = -1;
lapack_int* iwork = NULL;
double* work = NULL;
lapack_int iwork_query;
double work_query;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dspgvd", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dsp_nancheck( n, ap ) ) {
return -6;
}
if( LAPACKE_dsp_nancheck( n, bp ) ) {
return -7;
}
#endif
/* Query optimal working array(s) size */
info = LAPACKE_dspgvd_work( matrix_order, itype, jobz, uplo, n, ap, bp, w,
z, ldz, &work_query, lwork, &iwork_query,
liwork );
if( info != 0 ) {
goto exit_level_0;
}
liwork = (lapack_int)iwork_query;
lwork = (lapack_int)work_query;
/* Allocate memory for work arrays */
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
if( iwork == NULL ) {
goto exit_level_0;
}
work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_dspgvd_work( matrix_order, itype, jobz, uplo, n, ap, bp, w,
z, ldz, work, lwork, iwork, liwork );
/* 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_dspgvd", info );
}
return info;
}

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