Function dtgevc_

extern(C) void dtgevc_ (
  char* side,
  char* howmny,
  int* select,
  int* n,
  double* a,
  int* lda,
  double* b,
  int* ldb,
  double* vl,
  int* ldvl,
  double* vr,
  int* ldvr,
  int* mm,
  int* m,
  double* work,
  int* info,
  int side_len,
  int howmny_len
);