C++ 模板偏特化错误

Question

下面的代码给我一个编译错误:class Q64 is not a valid type for a template constant parameter

template<int GRIDD, class T>
INLINE T grid_residue(T amount) {
  T rem = amount%(GRIDD);
  if (rem > GRIDD/2) rem -= GRIDD;
  return rem;
}


template<int GRIDD, Q64>
INLINE Q64 grid_residue(Q64 amount) {
  return Q64(grid_residue<GRIDD, int64_t>(to_int(amount)));
}

怎么了？我正在努力专注 grid_residue上课 Q64 .

更新:

更改语法。现在出现错误 error: function template partial specialization 'grid_residue<GRIDD, Q64>' is not allowed

template<int GRIDD>
INLINE Q64 grid_residue(Q64 amount) {
    return Q64(grid_residue<GRIDD, int>(to_int(amount)));
}

谢谢

Answer 1

函数不能部分特化!要么使用函数重载:template <int GRIDD> inline Q64 grid_residue(Q64 amount)或将您的函数包装在一个类型中(可以部分特化)。