The infinf in C is a macro that represents infinity. It is a floating-point constant used to represent infinity values, limit values as algorithm stopping conditions, or to handle infinity in mathematical operations. It has two forms: positive infinity and negative infinity. It is limited by the IEEE floating point number standard and is not infinity in the true sense.
inf
inf in C is a macro that represents infinity in C. It is a floating point constant, defined by the <climits>
header file.
Usage
inf is often used to represent infinite values, for example:
Note
std::numeric_limits<double>::infinity()
) or negative infinity (-std::numeric_limits<double>::infinity()
). Example
<code class="cpp">#include <iostream> #include <climits> using namespace std; int main() { // 创建一个无穷大的数组 int arr[std::numeric_limits<int>::max()]; // 计算无穷大和有限数的和 double sum = 1.0 + std::numeric_limits<double>::infinity(); cout << "无穷大和有限数的和: " << sum << endl; // 判断是否达到无穷大的停止条件 while (i < std::numeric_limits<int>::max()) { // ... } return 0; }</code>
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