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Quick Random Number Generator
When a computer produces a random number it is almost certainly bassed on the time. Might be worth you writing your own algorythum bassed on it.
A while back I read that they were making new cpu's that could give a random number based on the amount of heat in the chip. Has anyone heard anything more of this?
There is a really simple and very quick random number generator to do in asm, based on just multiplying a register by itself after adding something. works best on 8-bit regs like ah,al. i havent got any code but this is off the top of my head:
first:
_asm
{
mov ah,54
mul ah,al
mul ah,bh
}
later:
unsigned char randomnumber;
_asm
{
add ah,7
mul ah,ah
mov randomnumber,ah
}
randomnumber = apparently random number
Author
Does anybody out there know any good algorithms for quickly generating pseudo-random numbers that DOESN'T make use of the rand() function? Something with tables perhaps? I have come up with a few myself, but I would like to know if there are some better ones out there.
Thanks.
About random number generation in hardware . . .
I heard that some CPU's may have a compute random number instruction. This would make use of a oscillator, spinning down inside the chip. As the CPU gets hotter, it slows down, as it gets cooler, it speeds up. When a random number is needed, the current count in the oscillator is simply read.
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