LAPACK  3.5.0
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lapacke_sstein_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_sstein_work (int matrix_order, lapack_int n, const float *d, const float *e, lapack_int m, const float *w, const lapack_int *iblock, const lapack_int *isplit, float *z, lapack_int ldz, float *work, lapack_int *iwork, lapack_int *ifailv)

Function/Subroutine Documentation

lapack_int LAPACKE_sstein_work ( int  matrix_order,
lapack_int  n,
const float *  d,
const float *  e,
lapack_int  m,
const float *  w,
const lapack_int iblock,
const lapack_int isplit,
float *  z,
lapack_int  ldz,
float *  work,
lapack_int iwork,
lapack_int ifailv 
)

Definition at line 36 of file lapacke_sstein_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_sstein( &n, d, e, &m, w, iblock, isplit, z, &ldz, work, iwork,
ifailv, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldz_t = MAX(1,n);
float* z_t = NULL;
/* Check leading dimension(s) */
if( ldz < m ) {
info = -10;
LAPACKE_xerbla( "LAPACKE_sstein_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
z_t = (float*)LAPACKE_malloc( sizeof(float) * ldz_t * MAX(1,m) );
if( z_t == NULL ) {
goto exit_level_0;
}
/* Call LAPACK function and adjust info */
LAPACK_sstein( &n, d, e, &m, w, iblock, isplit, z_t, &ldz_t, work,
iwork, ifailv, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, m, z_t, ldz_t, z, ldz );
/* Release memory and exit */
LAPACKE_free( z_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_sstein_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_sstein_work", info );
}
return info;
}

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