Miscellaneous

Routine	Attributes	Description
setjmp	reentrant	Saves the current stack condition and program address
longjmp	reentrant	Restores the stack condition and program address
_nop_	intrinsic, reentrant	Inserts an 8051 NOP instruction
_testbit_	intrinsic, reentrant	Tests the value of a bit and clears it to 0

Routines found in the miscellaneous category do not fit easily into any other library routine category. The setjmp and longjmp routines are implemented as functions and are prototyped in the STDJMP.H include file.

The _nop_ and _testbit_ routines are used to direct the compiler to generate a NOP instruction and a JBC instruction respectively. These routines are prototyped in the INTRINS.H include file.