Was thinking about stuff and got too deep in thought the other day.


Random question appeared:


How does a math function, a simple one like addition for example, look like as a bare bones kind of thing.

Like if you bring up the calculator program on windows or if you use 99% of programming languages, you can just use '+' syntax and it does the work for you. I am curious as to what the code behind the '+' looks like.

Maybe it is really simple. I dunno.

At some point there has to be something that defines addition right? Or else no one would be able to use it....

It's "implemented" on processor level, it's just operation it does on two values.

all base arithmetical functions are done using bitwise operators, i think (you can google for examples of them)
correct me if i'm wrong

software level: ADD - http://en.wikipedia.org/wiki/Assembly_language

hardware level: http://en.wikipedia.org/wiki/Adder_(electronics)

This post was edited by irimi on Jul 13 2012 05:21pm

it's like a microwave. it just works.

there were only three classes i took in college that i found useful, and two of them were computer engineering courses. if you have any interest in how computers work or if you want to pursue CS as a hobby/professionally, i highly recommend taking a few CE courses.