# Difference between revisions of "Lua:qwordToByteTable"

function qwordToByteTable(Number) : table

Converts a QWORD (8 bytes) to a byte table, interpreting it as an integer.

Note: If the number is a float only the integer no greater than or no less than the given value will be used.

Same as value from 'math.floor'.

``` i.e.: 8.1 : 8, 8.9 : 8, -8.1 : -8, -8.9 : -8
```

Note: If the number is larger than a QWORD (8 bytes) only the lower portion of the number will be used.

``` i.e.: 0xFFFFFFFFFFFFFFFF00 : 0xFFFFFFFFFFFFFF00
8 7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
```

## Contents

### Function Parameters

Parameter Type Description
Number number The number to convert to a byte table

## Examples

``` local bt = qwordToByteTable(0xFFFFFFFFFFFFFFFF)
--7 6 5 4 3 2 1 0
writeBytes('00123ABC', bt)
```

Code:

``` local bt = qwordToByteTable(10)
for i, v in ipairs(bt) do
print(i - 1, string.format('%02X', v))
end
```

Output:

``` 0 0A
1 00
2 00
3 00
4 00
5 00
6 00
7 00
```

Code:

``` local bt = qwordToByteTable(10.9)
for i, v in ipairs(bt) do
print(i - 1, string.format('%02X', v))
end
```

Output:

``` 0 0A
1 00
2 00
3 00
4 00
5 00
6 00
7 00
```

Code:

``` local bt = qwordToByteTable(0xFFFFFFFFFFFFFFFFFF00)
--8 7 6 5 4 4 3 2 1 0
for i, v in ipairs(bt) do
print(i - 1, string.format('%02X', v))
end
```

Output:

``` 0 00
1 FF
2 FF
3 FF
4 FF
5 FF
6 FF
7 FF
```