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Boolean Math Functions
Boolean operations work with the invidual bits in
the binary composition of a number. The lua language includes
syntax for
bitwise operations, such as &, ~, <<,
and others. This class extends those built-in functions for Boolean
math.
The Boolean operations always take numbers as
arguments. However, strings showing the bit patterns ate often
useful or convenient. Bit strings can show either hexadecimal or
binary representations of numbers, but the strings must be
converted to decimal numbers to be used by Boolean functions like
BitAnd or
BitTest. The hexadecimal and binary representations
have the least significant bit at the right end of the string.
To aid in converting between decimal numbers and
hexadecimal or binary strings, 6 conversion functions are provided.
For example, the number 46 can be converted to the string "2E"
(hexadecimal) or "101110" (binary), and vice versa. Hexadecimal and
binary strings are returned at full length, which means 32
characters for the binary representation of a 32-bit number or 8
characters for the hexadecimal representation of a 32-bit number.
To reduce the string length, you can use the
BitTrim function to strip all leading 0's from the
hexadecimal or binary string. Conversions from binary or
hexadecimal strings to decimal form do not care whether the leading
0's are present.
Boolean Operations
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BitAnd
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Performs the bit-wise AND of two numbers.
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BitOr
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Performs the bit-wise OR of two numbers.
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BitXor
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Performs the bit-wise XOR of two numbers.
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BitNot
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Performs the bit-wise NOT, or complement of a
number.
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BitNand
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Performs the bit-wise NAND of two numbers.
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BitNor
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Performs the bit-wise NOR of two numbers.
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BitTest
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Tests if the bit in a given position is a 1 or
0.
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Conversions
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BitDtoX
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Converts a decimal number to a hexadecimal
string.
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BitXtoD
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Converts a hexadecimal string to a decimal
number.
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BitXtoB
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Converts a hexadecimal string to a binary
string.
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BitBtoX
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Converts a binary string to a hexadecimal
string.
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BitDtoB
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Converts a decimal number to a binary string.
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BitBtoD
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Converts a binary string to a decimal number.
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BitTrim
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Trims leading 0's from a hexadecimal or binary
string.
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Related Topics
Contents
lua bitwise operators
Mira Pro x64 Script User's Guide, v.8.76 Copyright Ⓒ 2024
Mirametrics, Inc. All Rights Reserved.
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