Operator Shl (Shift Left)
Shifts the bits of a numeric expression to the left
Declare Operator Shl ( ByRef lhs As Integer, ByRef rhs As Integer ) As Integer
Declare Operator Shl ( ByRef lhs As UInteger, ByRef rhs As UInteger ) As UInteger
Declare Operator Shl ( ByRef lhs As LongInt, ByRef rhs As LongInt ) As LongInt
Declare Operator Shl ( ByRef lhs As ULongInt, ByRef rhs As ULongInt ) As ULongInt
result = lhs Shl rhs
lhs
Returns the result of lhs being shifted left rhs number of times.
Operator Shl (Shift left) shifts all of the bits in the left-hand side expression (lhs) left a number of times specified by the right-hand side expression (rhs). This has the effect of multiplying lhs by two for each shift. For example, "&b0101 Shl 1" returns the binary number &b01010, and "5 Shl 1" returns 10.
Neither of the operands are modified in any way.
This operator can be overloaded for user-defined types.
Output:
Syntax
Declare Operator Shl ( ByRef lhs As Integer, ByRef rhs As Integer ) As Integer
Declare Operator Shl ( ByRef lhs As UInteger, ByRef rhs As UInteger ) As UInteger
Declare Operator Shl ( ByRef lhs As LongInt, ByRef rhs As LongInt ) As LongInt
Declare Operator Shl ( ByRef lhs As ULongInt, ByRef rhs As ULongInt ) As ULongInt
Usage
result = lhs Shl rhs
Parameters
lhs
The left-hand side expression.
rhsThe right-hand side shift expression.
Return Value
Returns the result of lhs being shifted left rhs number of times.
Description
Operator Shl (Shift left) shifts all of the bits in the left-hand side expression (lhs) left a number of times specified by the right-hand side expression (rhs). This has the effect of multiplying lhs by two for each shift. For example, "&b0101 Shl 1" returns the binary number &b01010, and "5 Shl 1" returns 10.
Neither of the operands are modified in any way.
This operator can be overloaded for user-defined types.
Example
'Double a number
For i As Integer = 0 To 10
Print 5 Shl i, Bin(5 Shl i, 16)
Next i
For i As Integer = 0 To 10
Print 5 Shl i, Bin(5 Shl i, 16)
Next i
Output:
5 0000000000000101 10 0000000000001010 20 0000000000010100 40 0000000000101000 80 0000000001010000 160 0000000010100000 320 0000000101000000 640 0000001010000000 1280 0000010100000000 2560 0000101000000000 5120 0001010000000000
Dialect Differences
- Not available in the -lang qb dialect unless referenced with the alias __Shl.
Differences from QB
- New to FreeBASIC
See also
