subtraction

This question already has an answer here: Pointer/Address difference [duplicate] 3 answers I'm trying to find the distance in memory between two variables. Specifically I need to find the distance between a char[] array and an int. char data[5]; int a = 0; printf("%p\n%p\n", &data[5], &a); long int distance = &a - &data[5]; printf("%ld\n", distance); When I run my my program without the last two lines I get the proper memory address of the two variables, something like this: 0x7fff5661aac7 0x7fff5661aacc Now I understand, if I'm not wrong, that there are 5 bytes of distance between the two

i am working on frames of a video and i want to subtract one frame from other to find out the difference but i dont know how to proceed. i tried converting my bitmap frames into mat and then subtracting them but its not working. i am using opencv 2.4.3 for mat function. can anybody tell me how to do that. if possible explain with code snippets. i tried something like this Bitmap myBitmap1 = BitmapFactory.decodeFile("/mnt/sdcard/Frames/mpgFrames/image001.jpg"); Bitmap myBitmap2 = BitmapFactory.decodeFile("/mnt/sdcard/Frames/mpgFrames/image002.jpg"); int width = myBitmap1.getWidth(); int height

In my program I'm calculating two numbers, and I want to make sure that subtraction of them equals 1. this is the code: var firstCount=element.all(by.repeater('app in userApps')).count(); var secondCount=element.all(by.repeater('app in userApps')).count(); so far it's good- I'm getting the numbers. the problem comes next: var sub=secondCount-firstCount; expect(sub).toEqual(1); I'm getting this error: Expected NaN to equal 1. any idea? Both firstCount and secondCount are promises that are needed to be resolved : element.all(by.repeater('app in userApps')).count().then(function (first) { element

I have two bitmaps, produced by different variations of an algorithm. I'd like to create a third bitmap by subtracting one from the other to show the differences. How can this be done in .NET? I've looked over the Graphics class and all its options, including the ImageAttributes class, and I have a hunch it involves the color matrix or remap tables functionality. Does anyone have a link to some example code, or can point me in the right direction? A google search doesn't reveal much, unless my google-fu is failing me today. The real question is, what differences do you want to show? If you

I've been reading around and with the 8086 Instruction Set, it says that a CMP (compare) can set the Carry Flag. I understand that a compare subtracts two operands but I was wondering if anyone can provide an example when that is the case. I just can't grasp the idea of adding a number and a negative number will set the carry flag. I've read into the borrow flag but I just needed an example to clarify my understanding of a compare instruction. Also, I understand that if 3 - 5 = -2 would set the negative flag... when is carry set? The carry flag is set after an operation that resulted in an

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center . Closed 7 years ago . I am beginner in C# and I am working with floating point numbers. I need to do subtraction between these two numbers but it does not work. I know it is caused by floating point number, but how can I fix it please and if you be so good can you explain me