我有一个名为FloatTensor的类。在那我已经为+和*重载了运算符。这是代码。
class FloatTensor {
public:
float val; // value of tensor
float grad; // value of grad
Operation *frontOp =NULL, *backOp =NULL;
FloatTensor* two;
FloatTensor() {
// default
}
FloatTensor(float val) {
this->val = val;
}
FloatTensor(float val, Operation* op) {
this->val = val;
this->backOp = op;
}
void backward(float grad) {
this->grad = grad;
if(this->backOp != NULL) {
this->backOp->backward(grad);
}
}
FloatTensor exp() {
this->frontOp = new ExponentOperation(this);
return this->frontOp->compute();
}
FloatTensor operator * (FloatTensor &two) {
this->frontOp = new MultiplyOperation(this, &two);
return this->frontOp->compute();
}
FloatTensor operator + (FloatTensor &two) {
this->frontOp = new AddOperation(this, &two);
return this->frontOp->compute();
}
FloatTensor operator / (FloatTensor &two) {
this->frontOp = new DivideOperation(this, &two);
return this->frontOp->compute();
}
};
在我的主要功能中,当我尝试简单的重载时,一切运行良好
int main() {
// X
FloatTensor x1(200); // heap declaration
FloatTensor x2(300);
// Weights
FloatTensor w1(222);
FloatTensor w2(907);
FloatTensor temp = (x1*w1);
}
但是,当我尝试使用更多这样的运算符重载此公式
int main() {
// X
FloatTensor x1(200); // heap declaration
FloatTensor x2(300);
// Weights
FloatTensor w1(222);
FloatTensor w2(907);
FloatTensor temp = (x1*w1) + (x2*w2);
}
我收到此错误:
no operator "+" matches these operands -- operand types are: FloatTensor + FloatTensor
如果有人能解释为什么会发生,我将不胜感激。我观察到这可行:
x1*w1*x2*x1;
x1*w1 + x2;
但是x1*w1 + x2*w2
没有。
很奇怪..
答案 0 :(得分:3)
您的运算符接受非const
左值引用作为参数。临时不会绑定到非const
左值引用。要接受临时人员,请使用:
FloatTensor operator + (const FloatTensor &two)