how to get a fraction in blue

[tester]

How to get (simplest way) a factional part in blue?
Like 4.543 -> 0.543
rndint(x) works differently than green int philosophy.

[strangeChild]

Code: Select all

out = in-rndint(in);

[tester]

Nope. Check the numbers with fraction above #.5, like 3.8
Code int rounds up or down. Green integer splits the integer and fractional part.

[strangeChild]

Yeah... posted without checking (or thinking!)... Sorry.

[strangeChild]

out = in - rndint(in-0.5);

But only with positive values

For negative and positive values this looks like it works:

Code: Select all

streamin in;
streamout out;
float adj;

adj = 0.5 - (1 & (in<0));

out = in - rndint(in-adj);

(the assembly people can give you a proper solution)

EDIT - final - DOESN'T WORK WITH FLOATS THAT ARE ALREADY INTEGERS... I'll shut up now.

[tester]

Need for both - positive and negative values.

[strangeChild]

Was editing last post when you replied... but as I said the assembly guys will give you something much better but this does seem to work.

[tester]

Yeah, just came to similar thing, but I was wondering - if there is a simpler, "one operation" way.

[MyCo]

This doesn't look simpler, but actually it's a lot faster.

[strangeChild]

for something that looks simple...

Code: Select all

out = in%1;

I missed that there's a modulus divide.