Difference between revisions of "Lua:doubleToByteTable"
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(Created page with ''''function''' doubleToByteTable(''Number'') Converts a QWORD (8 bytes), interpreted as a double precision floating point, to a byte table. === Function Parameters === {|width…') |
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| − | '''function''' doubleToByteTable(''Number'') | + | [[Category:Lua]] |
| + | {{CodeBox|'''function''' doubleToByteTable(''Number'') ''':''' Table}} | ||
| − | Converts a | + | Converts a double precision (64-bit) floating point number to a table of bytes. |
| − | + | ===Function Parameters=== | |
| − | === Function Parameters === | + | {|width="85%" cellpadding="10%" cellspacing="0" border="0" |
| − | {|width="85%" cellpadding="10 | ||
!align="left"|Parameter | !align="left"|Parameter | ||
!align="left"|Type | !align="left"|Type | ||
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|- | |- | ||
|Number | |Number | ||
| − | | | + | |Number |
| − | |The | + | |The double precision floating point value to convert. |
|} | |} | ||
| + | ===Returns=== | ||
| + | Table — A table containing the bytes representing the double. | ||
| − | == | + | ===Explanation=== |
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| − | + | The "ToByteTable" functions convert a value (such as an integer or floating-point number) into a table of bytes that represent how the value is stored in memory. | |
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| − | + | For example, if you use <code>wordToByteTable(1337)</code>: | |
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| + | - The decimal number <code>1337</code> is <code>0x0539</code> in hexadecimal. | ||
| + | - Computers typically use little-endian order, meaning the least significant byte comes first. | ||
| + | - So, <code>0x0539</code> is split into two bytes: <code>0x39</code> (57 in decimal) and <code>0x05</code> (5 in decimal). | ||
| + | - The resulting byte table is <code>{0x39, 0x05}</code> or <code>{57, 5}</code>. | ||
| − | + | This means: | |
| − | + | - <code>bytes[1] = 0x39</code> (the low byte) | |
| − | + | - <code>bytes[2] = 0x05</code> (the high byte) | |
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| − | + | This process applies to all "ToByteTable" functions: | |
| − | + | They break down the value into its raw bytes, ordered from least significant to most significant (little-endian). | |
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| + | ===Examples=== | ||
| + | <pre> | ||
| + | local bytes = doubleToByteTable(3.1415926535) | ||
| + | for i, b in ipairs(bytes) do | ||
| + | print(string.format("Byte %d: %02X", i, b)) | ||
| + | end | ||
| + | -- Output: 8 bytes representing the double in little-endian order | ||
| + | </pre> | ||
| − | + | {{LuaSeeAlso}} | |
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=== Related Functions === | === Related Functions === | ||
| − | + | {{ReadWriteMemory}} | |
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Latest revision as of 23:10, 4 December 2025
| <> Function function doubleToByteTable(Number) : Table |
Converts a double precision (64-bit) floating point number to a table of bytes.
Function Parameters[edit]
| Parameter | Type | Description |
|---|---|---|
| Number | Number | The double precision floating point value to convert. |
Returns[edit]
Table — A table containing the bytes representing the double.
Explanation[edit]
The "ToByteTable" functions convert a value (such as an integer or floating-point number) into a table of bytes that represent how the value is stored in memory.
For example, if you use wordToByteTable(1337):
- The decimal number 1337 is 0x0539 in hexadecimal.
- Computers typically use little-endian order, meaning the least significant byte comes first.
- So, 0x0539 is split into two bytes: 0x39 (57 in decimal) and 0x05 (5 in decimal).
- The resulting byte table is {0x39, 0x05} or {57, 5}.
This means:
- bytes[1] = 0x39 (the low byte)
- bytes[2] = 0x05 (the high byte)
This process applies to all "ToByteTable" functions: They break down the value into its raw bytes, ordered from least significant to most significant (little-endian).
Examples[edit]
local bytes = doubleToByteTable(3.1415926535)
for i, b in ipairs(bytes) do
print(string.format("Byte %d: %02X", i, b))
end
-- Output: 8 bytes representing the double in little-endian order
See also[edit]
| Lua |
| Script Engine |
Related Functions[edit]
| Read Functions |
|---|
| readBytes |
| readSmallInteger |
| readInteger |
| readQword |
| readPointer |
| readFloat |
| readDouble |
| readString |
| Read Functions (Local Process) |
| readBytesLocal |
| readIntegerLocal |
| readQwordLocal |
| readPointerLocal |
| readFloatLocal |
| readDoubleLocal |
| readStringLocal |
| Write Functions |
| writeBytes |
| writeSmallInteger |
| writeInteger |
| writeQword |
| writeFloat |
| writeDouble |
| writeString |
| Write Functions (Local Process) |
| writeBytesLocal |
| writeIntegerLocal |
| writeQwordLocal |
| writeFloatLocal |
| writeDoubleLocal |
| writeStringLocal |
| Byte Table Conversions (Value → Byte Table) |
| wordToByteTable |
| dwordToByteTable |
| qwordToByteTable |
| floatToByteTable |
| doubleToByteTable |
| stringToByteTable |
| wideStringToByteTable |
| Byte Table Conversions (Byte Table → Value) |
| byteTableToWord |
| byteTableToDword |
| byteTableToQword |
| byteTableToFloat |
| byteTableToDouble |
| byteTableToString |
| byteTableToWideString |
