ShiftLeft()
Summary
Performs a left arithmetic shift of the bits in an integer.
Syntax
int = ShiftLeft(integer int1, integer shift)
| Argument | Contents |
|---|---|
| int1 | An integer |
| shift | Number of bits to shift left, from 1 to 32; a negative value will shift right |
Returns
An integer with an arithmetic shift of the bits the specified number of places to the left.
Notes
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Bits are dropped from the left end, and new bits on the right are set to 0.
-
The sign bit can change if a different value moves into the sign (leftmost) bit.
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Until the sign bit is changed, ShiftLeft() is the equivalent of multiplying by powers of 2.
Examples
int = ShiftLeft(15, 1) // int = 30: in binary, 1111 becomes 11110
int = ShiftLeft(1073741824, 1) // int = -2147483648: leftmost numeric bit moved to sign bitSee Also
| Function | Summary |
|---|---|
| BitwiseAnd() | Computes the bitwise AND of two integers |
| BitwiseNot() | Computes the bitwise NOT of an integer |
| BitwiseOr() | Computes the bitwise OR of two integers |
| BitwiseXor() | Computes the bitwise exclusive OR of an integer |
| ShiftRight() | Does a right arithmetic shift of the bits in an integer |