Function dtgsna_

extern(C) void dtgsna_ (
  char* job,
  char* howmny,
  int* select,
  int* n,
  double* a,
  int* lda,
  double* b,
  int* ldb,
  double* vl,
  int* ldvl,
  double* vr,
  int* ldvr,
  double* s,
  double* dif,
  int* mm,
  int* m,
  double* work,
  int* lwork,
  int* iwork,
  int* info,
  int job_len,
  int howmny_len
);