#ifndef HANDMADE_MATH_H
#define HANDMADE_MATH_H

// TODO: Make these static.
struct v2 {
    float X, Y;
    float E[2];
};

struct v2 V2(float X, float Y)
{
    struct v2 Result;

    Result.X = X;
    Result.Y = Y;

    return Result;
}

struct v2 V2Multiply(float A, struct v2 B)
{
    struct v2 Result;

    Result.X = A * B.X;
    Result.Y = A * B.Y;

    return Result;
}

struct v2 V2Unary(struct v2 A)
{
    struct v2 Result;

    Result.X = -A.X;
    Result.Y = -A.Y;

    return Result;
}

struct v2 V2Add(struct v2 A, struct v2 B)
{
    struct v2 Result;

    Result.X = A.X + B.X;
    Result.Y = A.Y + B.Y;

    return Result;
}

struct v2 V2Subtract(struct v2 A, struct v2 B)
{
    struct v2 Result;

    Result.X = A.X - B.X;
    Result.Y = A.Y - B.Y;

    return Result;
}

float Square(float A)
{
    float Result;

    Result = A * A;

    return Result;
}

float InnerProduct(struct v2 A, struct v2 B)
{
    float Result = A.X*B.X + A.Y*B.Y;
    return Result;
}

float LengthSq(struct v2 A)
{
    float Result = InnerProduct(A, A);
    return Result;
}

#endif