bobo1234:
I've dug into the Arduino internals and I have come across macros sbi() & cbi() and although they are functionally equivalent to sbi/cbi machine instructions they do not actually expand to those instructions.
Bullshit.
#define sbi(r,b) r |= _BV(b)
#define cbi(r,b) r &= ~_BV(b)
void setup()
{
sbi( PORTB, 3 );
}
void loop()
{
}
...
000000a6 <setup>:
a6: 2b 9a sbi 0x05, 3 ; 5
a8: 08 95 ret
...