How to "optimize" self-defined 32bit shift-left routine ?

Dear all, I encountered one problem about "executing self-defined 32bit shift-left routine too long"... That is, I built my own routine to execute 32-bit shift left operation and found it takes...
How to "optimize" self-defined 32bit shift-left routine ?

Dear all, I encountered one problem about "executing self-defined 32bit shift-left routine too long"... That is, I built my own routine to execute 32-bit shift left operation and found it takes...
arithmetic left-shift wrap-around

I have run into an issue when performing arithmetic left-shifts in C with Keil when the shift operand is a constant. Specifically, if the operand is a constant and specifies a shift value larger than...
arithmetic left-shift wrap-around

I have run into an issue when performing arithmetic left-shifts in C with Keil when the shift operand is a constant. Specifically, if the operand is a constant and specifies a shift value larger than...
Left and right arrowkeys and the // do not work in the mcu 8051 ide

As the title says the Left and Right arrow keys are not working in the 8051 ide. I installed the latest version I could find on my ubuntu 16.04 machine. Also when I use // for comments I get...