CODEWITHSUNDEEP
c#math
Majs
Majs

Reputation: 66

Subtract if number is negative, add if number is positive

I want to remove 10 from Vector3 diff x & z if is is < 0, and add 10 if it is >= 0. Is there a better way to do that?

            if (diff.x < 0)
                diff.x -= 10;
            else if (diff.x >= 0)
                diff.x += 10;
            if (diff.z < 0)
                diff.z -= 10;
            else if (diff.z >= 0)
                diff.z += 10;

Upvotes: 0

Views: 901

Answers (2)

dmuir
dmuir

Reputation: 4431

If your numbers are doubles, you could use Math.CopySign. Math.CopySign(x,y) has the magnitude of x and the sign of y.

diff.x += Math.CopySign( 10, diff.x);
diff.z += Math.CopySign( 10, diff.z);

Upvotes: 0

Kasper Davidsen
Kasper Davidsen

Reputation: 142

You could use the conditional operator to only make a single comparison for both x and z. Again, people can have many different opinions about conciseness, readability, etc.

diff.x += (diff.x < 0 ? -10 : 10);
diff.z += (diff.z < 0 ? -10 : 10);

Upvotes: 1

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