abs() function operator

[dallin]

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.

[picogeek]

Try the fabs() function for floating point numbers.

[Acidburn]

abs function is for doubles...fabs is for floats

[Dave Sinkula]

abs function is for doubles...fabs is for floats

No. Care to try again?

[vegaseat]

Roll your own, it's just too simple ...

if (number < 0)  number = -number;

[Acidburn]

No. Care to try again?

its not? thats what my linux help manual said

[Dave Sinkula]

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]

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]

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]

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