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

lapack_int LAPACKE_cstein (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, lapack_complex_float *z, lapack_int ldz, lapack_int *ifailv)

Function/Subroutine Documentation

lapack_int LAPACKE_cstein ( 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,
lapack_complex_float z,
lapack_int  ldz,
lapack_int ifailv 
)

Definition at line 36 of file lapacke_cstein.c.

{
lapack_int info = 0;
lapack_int* iwork = NULL;
float* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_cstein", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_s_nancheck( n, d, 1 ) ) {
return -3;
}
if( LAPACKE_s_nancheck( n, e, 1 ) ) {
return -4;
}
if( LAPACKE_s_nancheck( n, w, 1 ) ) {
return -6;
}
#endif
/* Allocate memory for working array(s) */
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
if( iwork == NULL ) {
goto exit_level_0;
}
work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,5*n) );
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_cstein_work( matrix_order, n, d, e, m, w, iblock, isplit, z,
ldz, work, iwork, ifailv );
/* 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_cstein", info );
}
return info;
}

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