Round function

VEX V5 General Discussion General Forum
1

Generally, in C, you’d use #include <math.h> to use a round function. However, using that line causes a compiler error. Is there a built-in round() function in RobotC? If not, how can I work around it?

2

I don’t think ROBOTC has a round function, but one can do:

int round(float x) {
   return (f>0)?(int)(f+0.5):(int)(f - 0.5);
}

Source: ROBOTC

I learned something new today: when you cast a float/double to an integer in C, it rounds towards zero, rather than flooring the number.

3

ROBOTC has a round function, this from (an old) RobotCIntrinsics.c

intrinsic float ceil(const float input)         
intrinsic float floor(const float input)  
intrinsic long  round(const float input)

No need to include <math.h>