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

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Functions/Subroutines

lapack_int LAPACKE_sstebz (char range, char order, lapack_int n, float vl, float vu, lapack_int il, lapack_int iu, float abstol, const float *d, const float *e, lapack_int *m, lapack_int *nsplit, float *w, lapack_int *iblock, lapack_int *isplit)

Function/Subroutine Documentation

lapack_int LAPACKE_sstebz ( char  range,
char  order,
lapack_int  n,
float  vl,
float  vu,
lapack_int  il,
lapack_int  iu,
float  abstol,
const float *  d,
const float *  e,
lapack_int m,
lapack_int nsplit,
float *  w,
lapack_int iblock,
lapack_int isplit 
)

Definition at line 36 of file lapacke_sstebz.c.

{
lapack_int info = 0;
lapack_int* iwork = NULL;
float* work = NULL;
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_s_nancheck( 1, &abstol, 1 ) ) {
return -8;
}
if( LAPACKE_s_nancheck( n, d, 1 ) ) {
return -9;
}
if( LAPACKE_s_nancheck( n-1, e, 1 ) ) {
return -10;
}
if( LAPACKE_lsame( range, 'v' ) ) {
if( LAPACKE_s_nancheck( 1, &vl, 1 ) ) {
return -4;
}
}
if( LAPACKE_lsame( range, 'v' ) ) {
if( LAPACKE_s_nancheck( 1, &vu, 1 ) ) {
return -5;
}
}
#endif
/* Allocate memory for working array(s) */
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,3*n) );
if( iwork == NULL ) {
goto exit_level_0;
}
work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,4*n) );
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_sstebz_work( range, order, n, vl, vu, il, iu, abstol, d, e,
m, nsplit, w, iblock, isplit, work, 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_sstebz", info );
}
return info;
}

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