##### Synopsis

    #include <inavr.h>
    unsigned char __bis_SR_register(unsigned char mask);

##### Description

__bis_SR_register sets the bits specified in mask in the AVR status register (i.e. it bitwise ors mask into the status register) and returns the value of the AVR status register before the update.

__bis_SR_register is an intrinsic function and produces inline code.

##### Portability

__bis_SR_register can be used on any AVR device.