8.6.3 bit_is_set Macro
A macro that returns true if a bit is set in an SFR.
Include
<avr/sfr_defs.h>
Prototype
int _bit_is_set(sfr, bit_number);
Remarks
This macro tests to see if the specified bit in sfr
is set, returning true if that is the case; 0 otherwise.
Example
#include <xc.h>
#include <avr/sfr_defs.h>
int main(void)
{
if(bit_is_set(EIMSK, PCIE2))
proceed = 0;
}