How can I make random with 'real' numbers?

How can I make random with 'real' numbers? - Printable Version

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+--- Thread: How can I make random with 'real' numbers? (/showthread.php?tid=318985)

How can I make random with 'real' numbers? - nuriel8833 - 17.02.2012

How can I make a random with 'real' numbers (=not integers)
for ex:

pawn Код:

RandomEx(2264.60,2267.20); // From a stock

stock RandomEx(min,max) { return random(max-min)+min; }

^^
The above gives me the 'tag mismatch' warning
-----------------------
Thanks 4 helpers

Re: How can I make random with 'real' numbers? - KingHual - 17.02.2012

The native random doesn't accept floats. You just mindfucked me, but I figured it out, anyway I scripted this, and it worked like a charm

Код:

stock Float:RandomEx(Float:max)
{
new Float:range = max;
new Float:num = range * random(32767)/32767;
return num;
}

And if you want minimum value param, try this:

Код:

stock Float:RandomEx(Float:min,Float:max)
{
new Float:range = max-min;
new Float:num = min+range * random(32767)/32767;
return num;
}

Re: How can I make random with 'real' numbers? - KingHual - 17.02.2012

Quote:

Originally Posted by ******

What's with all the extra variables?

pawn Код:

stock Float:frandom(Float:max)
{
    return max * random(32768) / 32768.0;
}

pawn Код:

stock Float:frandomex(Float:min, Float:max)
{
    return min + (max - min) * random(32768) / 32768.0;
}

Trust me, reduction like this is good in PAWN (as is the ".0") and the use of "32768" instead of "32767".

Mm'kay, though I only gave him the example function. And why is "32768" better than "32767" ? Because it's even?

Re: How can I make random with 'real' numbers? - KingHual - 17.02.2012

Quote:

Originally Posted by ******

Power of two.

Ah, yes, didn't even go through my mind lol

Re: How can I make random with 'real' numbers? - nuriel8833 - 18.02.2012

Quote:

Originally Posted by ******

What's with all the extra variables?

pawn Код:

stock Float:frandom(Float:max)
{
    return max * random(32768) / 32768.0;
}

pawn Код:

stock Float:frandomex(Float:min, Float:max)
{
    return min + (max - min) * random(32768) / 32768.0;
}

Trust me, reduction like this is good in PAWN (as is the ".0") and the use of "32768" instead of "32767".

What do I need to put instead of the Float:frandomex?

Re: How can I make random with 'real' numbers? - KingHual - 18.02.2012

Quote:

Originally Posted by nuriel8833

What do I need to put instead of the Float:frandomex?

That's your stock's name. Don't remove the float, but you can change the part after the Float: to whatever you like.

Re: How can I make random with 'real' numbers? - nuriel8833 - 18.02.2012

Quote:

Originally Posted by king_hual

That's your stock's name. Don't remove the float, but you can change the part after the Float: to whatever you like.

Alright,thanks a lot both!

Re: How can I make random with 'real' numbers? - nuriel8833 - 18.02.2012

Sorry for doublepost,but theres a warning:

pawn Код:

warning 208: function with tag result used before definition, forcing reparse

Why?

Re: How can I make random with 'real' numbers? - KingHual - 18.02.2012

Quote:

Originally Posted by nuriel8833

Sorry for doublepost,but theres a warning:

pawn Код:

warning 208: function with tag result used before definition, forcing reparse

Why?

Well, not sure, but what did you change in the code? Because it worked fine for me.

Re: How can I make random with 'real' numbers? - nuriel8833 - 18.02.2012

Quote:

Originally Posted by king_hual

Well, not sure, but what did you change in the code? Because it worked fine for me.

All I did is this:

pawn Код:

stock Float:RandomEx(Float:min, Float:max) { return min + (max - min) * random(32768) / 32768.0; }