Why use __line__ instead of constant
Dear All,
kindly can any one clear this point to me?
in COROUTINE.H header file i found this defination
from coroutine.h—————————————————–
#define crSET_STATE0( xHandle ) ( ( corCRCB * )xHandle)->uxState = (__LINE__ * 2); return; case (__LINE__ * 2):
#define crSET_STATE1( xHandle ) ( ( corCRCB * )xHandle)->uxState = ((__LINE__ * 2)+1); return; case ((__LINE__ * 2)+1):
-——————————————————————-
what is "__line__"?
and why "__line__" is used instead of a constant.
best regards
ashawky
Why use __line__ instead of constant
…because each use of the macros has to have a unique number, using the line number is the easiest way of doing this. The generated numbers are used as ‘cases’ in a switch statement so need all be unique.
As an aside – I tried replying to your email but it bounced. I have some TMS470 code I can send but it is based on an old version and I have not tested it myself. I will need a non SourceForge address if you want me to send it. Do not post email addresses in this forum however.
Regards.