nasm random number generator function

Question

I need a random number generator function written in nasm. I'm sorry for asking, but I couldn't find any!

Answer 1

I don't know NASM, and I'm not in the habit of writing code on demand, unless they pay me.

But, here are algorithms you could investigate:

• http://en.wikipedia.org/wiki/Pseudorandom_number_generator
• http://en.wikipedia.org/wiki/Mersenne_twister
• http://www.codeproject.com/KB/recipes/SimpleRNG.aspx
• http://www.xkcd.org/221/

Answer 2

In many cases a call to rdtsc is enough. Anyway, it depends on your needs. It's perfect when you need a small random number rarely: rdtsc % N, or as seed for more complicate algorithms for other cases.

Answer 3

Among other things, Agner Fog has a random number generator written in assembly, see here.