Carry-Bit vs. Documentation

Note: This was originally posted on 27th June 2012 at http://forums.arm.com Hello, in every documentation I found something like "A carry occurs (..) , if the result of a subtraction is positive, (.....
Carry-Bit vs. Documentation

Note: This was originally posted on 27th June 2012 at http://forums.arm.com Hello, in every documentation I found something like "A carry occurs (..) , if the result of a subtraction is positive, (.....
Does _crol_ in intrins.h affect the carry bit?

I want to avoid the use of inline assembler in my code so I was hoping to replace RLC A with _crol(). Will this work or is _crol_() implemented with RL A (no carry bit)? Thanks in advance.
Does _crol_ in intrins.h affect the carry bit?

I want to avoid the use of inline assembler in my code so I was hoping to replace RLC A with _crol(). Will this work or is _crol_() implemented with RL A (no carry bit)? Thanks in advance.
passing carry bit to a function as parameter in C

Dear all, I have a small keyboard in my application and I poll all the keys periodically. I can read all the key values with 2 bytes. Next, I check the bits of these bytes for specific keys. In...