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

lapack_int LAPACKE_strsna (int matrix_order, char job, char howmny, const lapack_logical *select, lapack_int n, const float *t, lapack_int ldt, const float *vl, lapack_int ldvl, const float *vr, lapack_int ldvr, float *s, float *sep, lapack_int mm, lapack_int *m)

Function/Subroutine Documentation

lapack_int LAPACKE_strsna ( int  matrix_order,
char  job,
char  howmny,
const lapack_logical select,
lapack_int  n,
const float *  t,
lapack_int  ldt,
const float *  vl,
lapack_int  ldvl,
const float *  vr,
lapack_int  ldvr,
float *  s,
float *  sep,
lapack_int  mm,
lapack_int m 
)

Definition at line 36 of file lapacke_strsna.c.

{
lapack_int info = 0;
lapack_int ldwork = LAPACKE_lsame( job, 'e' ) ? 1 : MAX(1,n) ;
lapack_int* iwork = NULL;
float* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_strsna", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_sge_nancheck( matrix_order, n, n, t, ldt ) ) {
return -6;
}
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
if( LAPACKE_sge_nancheck( matrix_order, n, mm, vl, ldvl ) ) {
return -8;
}
}
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
if( LAPACKE_sge_nancheck( matrix_order, n, mm, vr, ldvr ) ) {
return -10;
}
}
#endif
/* Allocate memory for working array(s) */
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
iwork = (lapack_int*)
LAPACKE_malloc( sizeof(lapack_int) * MAX(1,2*(n-1)) );
if( iwork == NULL ) {
goto exit_level_0;
}
}
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
work = (float*)LAPACKE_malloc( sizeof(float) * ldwork * MAX(1,n+6) );
if( work == NULL ) {
goto exit_level_1;
}
}
/* Call middle-level interface */
info = LAPACKE_strsna_work( matrix_order, job, howmny, select, n, t, ldt,
vl, ldvl, vr, ldvr, s, sep, mm, m, work, ldwork,
iwork );
/* Release memory and exit */
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
LAPACKE_free( work );
}
exit_level_1:
if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'v' ) ) {
LAPACKE_free( iwork );
}
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_strsna", info );
}
return info;
}

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