slavikn
asked on
Imitating % for ints
Hi,
I need to imitate the '%' operator that C offers.
But I also need it to work with floats.
The floats isn't the problem.
What I need it the code that imitates '%' (for negative number too, of course).
Thanks in advance.
I need to imitate the '%' operator that C offers.
But I also need it to work with floats.
The floats isn't the problem.
What I need it the code that imitates '%' (for negative number too, of course).
Thanks in advance.
Sjef Bosman
How far did you get yourself? Converting a number to a string isn't too difficult.
ASKER
strings? hmm....
while (a >= b)
a -= b;
but this doesn't work if a and b are negative.
while (a >= b)
a -= b;
but this doesn't work if a and b are negative.
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ASKER
> Try if it works for negative numbers.
Yes, it does. Thanks!
Yes, it does. Thanks!
ASKER
heh :-D
'fmod' from 'math.h' does exactly the same :-))
'man pages' say it uses same formula :-))
'fmod' from 'math.h' does exactly the same :-))
'man pages' say it uses same formula :-))
They didn't get it from me ;-) Nor did I do a man fmod, but maybe I will...
ASKER
Heh ;-) I wrote this to say two things:
1) your formula is correct.
2) I could use a ready-made function instead.
:-)))
1) your formula is correct.
2) I could use a ready-made function instead.
:-)))
Better to use fmod, since converting to int will not work for numbers that go beyond integer precision. Probably fmod is then defined as a-floor(a/b)*b. Or so.
Sjef :)
Sjef :)