Function dgtcon_

extern(C) void dgtcon_ (
  char* norm,
  int* n,
  double* dl,
  double* d,
  double* du,
  double* du2,
  int* ipiv,
  double* anorm,
  double* rcond,
  double* work,
  int* iwork,
  int* info,
  int norm_len
);