1: #pragma once

  3: typedef struct _PetscHashIJKey {
  4:   PetscInt i, j;
  5: } PetscHashIJKey;

  7: #define PetscHashIJKeyHash(key)     PetscHashCombine(PetscHashInt((key).i), PetscHashInt((key).j))
  8: #define PetscHashIJKeyEqual(k1, k2) ((k1).i == (k2).i && (k1).j == (k2).j)