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

lapack_int LAPACKE_shsein (int matrix_order, char job, char eigsrc, char initv, lapack_logical *select, lapack_int n, const float *h, lapack_int ldh, float *wr, const float *wi, float *vl, lapack_int ldvl, float *vr, lapack_int ldvr, lapack_int mm, lapack_int *m, lapack_int *ifaill, lapack_int *ifailr)

Function/Subroutine Documentation

lapack_int LAPACKE_shsein ( int  matrix_order,
char  job,
char  eigsrc,
char  initv,
lapack_logical select,
lapack_int  n,
const float *  h,
lapack_int  ldh,
float *  wr,
const float *  wi,
float *  vl,
lapack_int  ldvl,
float *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m,
lapack_int ifaill,
lapack_int ifailr 
)

Definition at line 36 of file lapacke_shsein.c.

{
lapack_int info = 0;
float* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_shsein", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_sge_nancheck( matrix_order, n, n, h, ldh ) ) {
return -7;
}
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'l' ) ) {
if( LAPACKE_sge_nancheck( matrix_order, n, mm, vl, ldvl ) ) {
return -11;
}
}
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'r' ) ) {
if( LAPACKE_sge_nancheck( matrix_order, n, mm, vr, ldvr ) ) {
return -13;
}
}
if( LAPACKE_s_nancheck( n, wi, 1 ) ) {
return -10;
}
if( LAPACKE_s_nancheck( n, wr, 1 ) ) {
return -9;
}
#endif
/* Allocate memory for working array(s) */
work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) * MAX(1,n+2) );
if( work == NULL ) {
goto exit_level_0;
}
/* Call middle-level interface */
info = LAPACKE_shsein_work( matrix_order, job, eigsrc, initv, select, n, h,
ldh, wr, wi, vl, ldvl, vr, ldvr, mm, m, work,
ifaill, ifailr );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_shsein", info );
}
return info;
}

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