![division 2 hack division 2 hack](https://www.ordinaryreviews.com/wp-content/uploads/2020/03/Tom-Clancys-The-Division-2-Screenshot-2020.03.05-10.43.21.66-800x450.jpg)
#Division 2 hack software
Starting back in 1988, I developed some critical embedded system software for an Instrument Landing System (ILS).
![division 2 hack division 2 hack](https://i.postimg.cc/7PVyzRjR/icon.png)
Posted in ARM, Software Development, Software Hacks Tagged arm, division, dsPIC30, math, newton, recipriocal, RISC-V Post navigation If you are working on AVR and floating point, don’t miss this method. We love math tricks we can use in assembly language.
#Division 2 hack code
We liked that the post has a fixed-point implementation and then examines the resulting assembly code for ARM, RISC-V, and dsPIC30. Of course, then you have to multiply one more time to do the division. The right answer is a repeating decimal 0.0454545 and if you keep going, you’ll get there. So if you decide the reciprocal of 22 might be. If the estimate is off, you’ll get a scaling factor.Īs a formula it looks like this: x=x*(2-a*x) Skipping ahead, it is clear if your estimate was right, the multiplication would give you 1 which would not change the old estimate at all. Subtract that number from 2 and you have a factor to multiply your old estimate by to get a new estimate. For some number a, You take your estimate ( x) and multiply them together. So now you have a poor estimate of your reciprocal. But you could look up, say, the first 8 bits of the 32-bit number. But what about 32 bits? Now the table is just too big. A look-up table of 256 elements would provide perfect accuracy and would be very fast. For example, let’s just assume we want to find the reciprocal of a byte (presumably a fixed point byte). You can use this to perform a classic speed/space trade-off. Each multiplication creates better accuracy. Newton’s approximation for reciprocals lets you take a guess at the answer and then refine it through a series of multiplications. In other words, if we need to divide 34 by 6, you could rewrite 34/6 to 34 * 1/6 and the answer is the same. The basic premise is twofold: Newton’s method let you refine an estimate of a reciprocal by successive multiplications and then multiplying a number a reciprocal is the same as dividing.
#Division 2 hack how to
Then…” This method is a bit like that since you first have to know how to multiply before you can divide. He started out by saying, “First… get a million dollar. Steve Martin had a famous bit about how to be a millionaire and never pay taxes. The current installment covers using Newton’s algorithm to do division. Knowing how to roll your own might allow you to optimize for speed or space. But some processors lack the instructions and a library to do it might be less than ideal. This used to be a hotter topic, but nowadays many computers or computer languages have support for multiplication and division built-in. Over at Segger has an interesting series of blog posts about calculating division.