Defined in rt_sys.h, this is the library exit function. All exits from the library eventually call
This function must not return. You can intercept application exit at a higher level by either:
Implementing the C library function
exit()as part of your application. You lose
atexit()processing and library shutdown if you do this.
Implementing the function
__rt_exit(int n)as part of your application. You lose library shutdown if you do this, but
atexit()processing is still performed when
exit()is called or
The return code is advisory. An implementation might attempt to pass it to the execution environment.