I'm using the abs() function in a probability calculation using float and int variables however I'm getting error messages. What I'm trying to do is get a decimal answer using abs() but it appears to only accept integer variables? How do I get the abs() to give me a a 3 decimal place answer.
dallin 0 Newbie Poster
picogeek 0 Newbie Poster
Try the fabs() function for floating point numbers.
Acidburn 0 Posting Pro
abs function is for doubles...fabs is for floats
Dave Sinkula 2,398 long time no c Team Colleague
abs function is for doubles...fabs is for floats
No. Care to try again?
vegaseat 1,735 DaniWeb's Hypocrite Team Colleague
Roll your own, it's just too simple ...
if (number < 0) number = -number; Acidburn 0 Posting Pro
No. Care to try again?
its not? thats what my linux help manual said
Dave Sinkula 2,398 long time no c Team Colleague
its not? thats what my linux help manual said
Really?
http://www.rt.com/man/abs.3.html:
int abs(int j);
http://www.rt.com/man/fabs.3.html:
double fabs(double x);
Acidburn 0 Posting Pro
don't supose you could explain that a little more, I got the feeling that fabs and abs do different things pther than double and floats?
Dave Sinkula 2,398 long time no c Team Colleague
Given the prototypes, I thought it was quite obvious. (You didn't follow the links and read the descriptions either, did you?)
- abs is for int (not double)
- fabs is for floating point (double or float)
Acidburn 0 Posting Pro
Given the prototypes, I thought it was quite obvious. (You didn't follow the links and read the descriptions either, did you?)
- abs is for int (not double)
- fabs is for floating point (double or float)
i followed the links ..............never mind
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