Programming Forums - View Single Post

Klarre · Apr 2nd, 2006, 1:42 PM

I have this function written in C++, where a Vec3 is a structure with 3 floats.

Vec3 foo(Vec v1, Vec2 v2)
{
    Vec3 retVec;

    retVec.x = v1.x + v2.x;
    retVec.y = v1.y + v2.y;
    retVec.z = v1.z + v2.z;

    return retVec;
}

Now I want to rewrite this function into asm. But I need some design suggestions. How should you do this? Should I store the three values that retVec keeps after each other and return the adress to the first element? This is the only idea I can come up with.

Thanks for any suggestions!

/Klarre

Apr 2nd, 2006, 1:42 PM	#1
Klarre Game engine designer Join Date: May 2005 Location: Sweden Posts: 301 Rep Power: 4	[x86, MASM] Design thoughts I have this function written in C++, where a Vec3 is a structure with 3 floats. (Toggle Plain Text) Vec3 foo(Vec v1, Vec2 v2) { Vec3 retVec; retVec.x = v1.x + v2.x; retVec.y = v1.y + v2.y; retVec.z = v1.z + v2.z; return retVec; } Vec3 foo(Vec v1, Vec2 v2) { Vec3 retVec; retVec.x = v1.x + v2.x; retVec.y = v1.y + v2.y; retVec.z = v1.z + v2.z; return retVec; } Now I want to rewrite this function into asm. But I need some design suggestions. How should you do this? Should I store the three values that retVec keeps after each other and return the adress to the first element? This is the only idea I can come up with. Thanks for any suggestions! /Klarre