Pseudo random number generator

[zemtex]

I  have the Mersenne Twister library for masm here and it works wonderfully, creates uniform numbers, nice spread and very fast, it comes both as normal and SSE version.


My question is if masm32 already have a pseudo random number generator somewhere in its libraries?

[oex]

Antariy has an excellent one here:
http://www.masm32.com/board/index.php?topic=11679.msg122749#msg122749
(There might be a more up to date version in that thread)

Also check the whole thread for other random infos
(Though the sex life of snails is in another thread :bg)

[jj2007]

See MasmBasic Rand() or Random generator thread.

   Rand()   ; initialise
   Print Str$("Blazing fast and versatile RNG with excellent randomness, e.g. Rand(1000)=%i\n", Rand(1000))


Rand
            Rand()                     [/color]; empty args = initialise using rdtsc
            Rand(0, 100, xmm1)      ; 0....+100, dest can be local/global REAL8 var or xmm
            Rand(0, ebx, MyReal8)   ; 0....ebx, dest can be local/global REAL8 var or xmm
            Rand(0, 100)               ; 0....+100, left on FPU in st(0)
            Rand(-5.5, 9.3)            ; -5.3...+9.3, left on FPU in st(0)
            Print Str$("-5.5, 9.3: ST(0)=\t%If\n", ST(0))
            void Rand(123)            ; leaves dword in eax
            mov ecx, Rand(123)      ; range 0...123
            mov ecx, Rand(MyDword)   ; range passed as dword variable
Rem   [/color]- high-speed RNG generates pseudo random sequence with excellent randomness
   - for testing, do not initialise; for release version, use Rand() before the innermost loop
   - credits to Alex Bagayev for his AxRand algo
[/color]