Function r

Function that performs an arithmetic shift to the left of the specified number of bits.

Syntax	i32 r_shl (i32 value, i32 nBit)
value	Unit on which to perform the shift
nBit	Number of bits
result	Returns the result of the shift
Validity	Rule, Task
Note	In the left shift the heaviest bit exiting to the left is lost. A 0 enters on the right

Example usage:

r(100) = r_shl(r(101), 3)

; Assuming a value of r(101) = 0x12481248, after execution of the function the contents of r(100) will be : 0x92409240

NOTE: Since the heaviest bit does not exit to the left the behavior is similar to r_rol().

Example usage:

r(100) = r_rshl(r(101), 4)

; Assuming a value of r(101) = 0x12481248, after execution of the instruction the contents of r(100) will be : 0x24812480

Note: The heaviest bit exits to the left and is lost. A 0 enters on the right (different behavior from r_rol()).

Example usage:

r(1) = r_shl(r(1), 1)

Please enable JavaScript to view this site.