Function dtgexc_

extern(C) void dtgexc_ (
  int* wantq,
  int* wantz,
  int* n,
  double* a,
  int* lda,
  double* b,
  int* ldb,
  double* q,
  int* ldq,
  double* z,
  int* ldz,
  int* ifst,
  int* ilst,
  double* work,
  int* lwork,
  int* info
);