Hello, I am working on a Compiler and I've made it to the point it has to resolve arithmetic operations, however I would like to save some time and implementing some sort of already existing algorithm, I would like to ask if anyone knows an internet place or a book or has the link to somewher shere it is already done, please, this is to save time, so if anyone could tell me I would be thankful really.

when I finish it, I can upload my code so some other people could see how it was done

OK, Thanks in advance (i've already googled "postix notation resolve mathematic operations" but I found nothing)