C# - 是否有数学接口？

Question

I was working on a matrix-class, in which i want to make som linear algebra functions. I want to have a generic type in the matrix, which you can do arithmetic operations with, since i want to make a class representing a fraction instead of using double, but i also wanna use double in the future. Like this:

class Temp<T>
    {
        T[,] matrix;
        // Example of a math-using function
        public T Sum()
        {
            T sum = matrix[0,0];
            for(int i = 0; i < matrix.GetLength(0); i++)
            {
                for(int j = 0; j < matrix.GetLength(1); j++)
                {
                    sum += matrix[i, j]; // Error here
                }
            }
            return sum;
        }
    }

I thought that i could use something like where T: IMathable but i couldn't figure out what inheirentents it should have.

Answer 1

Have you tried the documents?

There is a Math class, you can check if that's the one you want Math Class

you import it with

using System;

Please give me a feedback on that. If this one doesn't solve try to be more specific, mentioning the language that has the function you want can help us to help you.

Answer 2

Yes, in .NET 7 / C# 11:

class Temp<T> where T : INumber<T>
{
    T[,] matrix;
    public T Sum()
    {
        T sum = matrix[0, 0];
        for (int i = 0; i < matrix.GetLength(0); i++)
        {
            for (int j = 0; j < matrix.GetLength(1); j++)
            {
                sum += matrix[i, j];
            }
        }
        return sum;
    }
}