Operator Shr (Shift Right)
Shifts the bits of a numeric expression to the right
Syntax
`
Declare Operator Shr ( ByRef lhs As Integer, ByRef rhs As Integer ) As Integer
Declare Operator Shr ( ByRef lhs As UInteger, ByRef rhs As UInteger ) As UInteger
Declare Operator Shr ( ByRef lhs As LongInt, ByRef rhs As LongInt ) As LongInt
Declare Operator Shr ( ByRef lhs As ULongInt, ByRef rhs As ULongInt ) As ULongInt
`
Usage
`
result = lhs Shr rhs
`
Parameters
`lhs`
The left-hand side expression.
`rhs`
The right-hand side shift expression.
Return Value
Returns the result of `lhs` being shifted right `rhs` number of times.
Description
`Operator Shr` (Shift right) shifts all of the bits in the left-hand side expression (`lhs`) right a number of times specified by the right-hand side expression (`rhs`). Numerically, the result is the same as "`Int(lhs` / `2 ^ rhs)`". For example, "`&b0101 Shr 1`" returns the binary number `&b010`, and "`5 Shr 1`" returns `2`.
If the left-hand side expression is signed and negative, the sign bit is copied in the newly created bits on the left after the shift. For example, "`-5 Shr 2`" returns `-2`.
Neither of the operands are modified in any way.
The results of this operation are undefined for values of `rhs` less than zero, or greater than or equal to the number of bits in the result's data type.
This operator can be overloaded for user-defined types.
Example
`
'Halve a number
For i As Integer = 0 To 10
Print 1000 Shr i, Bin(1000 Shr i, 16)
Next i
`
Output:

     1000         0000001111101000
     500          0000000111110100
     250          0000000011111010
     125          0000000001111101
     62           0000000000111110
     31           0000000000011111
     15           0000000000001111
     7            0000000000000111
     3            0000000000000011
     1            0000000000000001
     0            0000000000000000

Dialect Differences

- Not available in the -lang qb dialect unless referenced with the alias `__Shr`.

Differences from QB

- New to FreeBASIC

See also

- `Operator Shr= (Shift Right And Assign)`
- `Operator Shl (Shift Left)`
- `Bin`
- Mathematical Functions