Difference between revisions of "Lua:floatToByteTable"

From Cheat Engine
Jump to navigation Jump to search
(Created page with ''''function''' floatToByteTable(''Number'') Converts a DWORD (4 bytes), interpreted as a single precision floating point, to a byte table. === Function Parameters === {|width=…')
 
m
 
(5 intermediate revisions by 3 users not shown)
Line 1: Line 1:
−
'''function''' floatToByteTable(''Number'')
+
[[Category:Lua]]
 +
'''function''' floatToByteTable(''Number'') ''':''' Table
  
−
Converts a DWORD (4 bytes), interpreted as a single precision floating point, to a byte table.
+
Converts a single precision (32-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%" cellpadding="5%" cellspacing="0" border="0"
 
 
!align="left"|Parameter
 
!align="left"|Parameter
 
!align="left"|Type
 
!align="left"|Type
Line 11: Line 11:
 
|-
 
|-
 
|Number
 
|Number
−
|number
+
|Number
−
|The number to convert to a byte table
+
|The single precision floating point value to convert.
 
|}
 
|}
  
 +
===Returns===
 +
Table — A table containing the bytes representing the float.
  
−
== Examples ==
+
===Explanation===
−
  local bt = floatToByteTable(100.0)
 
−
  writeBytes('00123ABC', bt)
 
−
 
 
  
−
Code:
+
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.
−
  local bt = floatToByteTable(10)
 
−
  for i, v in ipairs(bt) do
 
−
    print(i - 1, string.format('%02X', v))
 
−
  end
 
  
−
Output:
+
For example, if you use <code>wordToByteTable(1337)</code>:
−
  0 00
 
−
  1 00
 
−
  2 20
 
−
  3 41
 
  
 +
- 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>.
  
−
Code:
+
This means:
−
  local bt = floatToByteTable(10.9)
+
- <code>bytes[1] = 0x39</code> (the low byte)
−
  for i, v in ipairs(bt) do
+
- <code>bytes[2] = 0x05</code> (the high byte)
−
    print(i - 1, string.format('%02X', v))
 
−
  end
 
  
−
Output:
+
This process applies to all "ToByteTable" functions:
−
  0 66
+
They break down the value into its raw bytes, ordered from least significant to most significant (little-endian).
−
  1 66
 
−
  2 2E
 
−
  3 41
 
  
 +
===Examples===
 +
<pre>
 +
local bytes = floatToByteTable(3.14)
 +
for i, b in ipairs(bytes) do
 +
  print(string.format("Byte %d: %02X", i, b))
 +
end
 +
-- Output: 4 bytes representing the float in little-endian order
 +
</pre>
  
−
== See also ==
+
{{LuaSeeAlso}}
−
* [[Lua]]
 
−
* [[Help_File:Script engine|Script engine]]
 
  
 
=== Related Functions ===
 
=== Related Functions ===
−
* [[readBytes]]
+
{{ReadWriteMemory}}
−
* [[readInteger]]
 
−
* [[readQword]]
 
−
* [[readPointer]]
 
−
* [[readFloat]]
 
−
* [[readDouble]]
 
−
* [[readString]]
 
−
* [[writeBytes]]
 
−
* [[writeInteger]]
 
−
* [[writeQword]]
 
−
* [[writeFloat]]
 
−
* [[writeDouble]]
 
−
* [[writeString]]
 
−
* [[readBytesLocal]]
 
−
* [[readIntegerLocal]]
 
−
* [[readQwordLocal]]
 
−
* [[readPointerLocal]]
 
−
* [[readFloatLocal]]
 
−
* [[readDoubleLocal]]
 
−
* [[readStringLocal]]
 
−
* [[writeBytesLocal]]
 
−
* [[writeIntegerLocal]]
 
−
* [[writeQwordLocal]]
 
−
* [[writeFloatLocal]]
 
−
* [[writeDoubleLocal]]
 
−
* [[writeStringLocal]]
 
−
* [[wordToByteTable]]
 
−
* [[dwordToByteTable]]
 
−
* [[qwordToByteTable]]
 
−
* [[doubleToByteTable]]
 
−
* [[stringToByteTable]]
 
−
* [[wideStringToByteTable]]
 
−
* [[byteTableToWord]]
 
−
* [[byteTableToDword]]
 
−
* [[byteTableToQword]]
 
−
* [[byteTableToFloat]]
 
−
* [[byteTableToDouble]]
 
−
* [[byteTableToString]]
 
−
* [[byteTableToWideString]]
 

Latest revision as of 17:34, 11 July 2025

function floatToByteTable(Number) : Table

Converts a single precision (32-bit) floating point number to a table of bytes.

Function Parameters[edit]

Parameter Type Description
Number Number The single precision floating point value to convert.

Returns[edit]

Table — A table containing the bytes representing the float.

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 = floatToByteTable(3.14)
for i, b in ipairs(bytes) do
  print(string.format("Byte %d: %02X", i, b))
end
-- Output: 4 bytes representing the float in little-endian order

See also[edit]

Related Functions[edit]



Retrieved from "https://wiki.cheatengine.org/index.php?title=Lua:floatToByteTable&oldid=7683"