Description
Exchange a byte's high and low nibbles.
Bit positions are usually counted from the least-significant bit, while a displayed binary string has its own left-to-right indexing convention. Masks, fields and parity predicates describe a selected region or pattern; local agreement does not validate a complete encoded record.
Exchange a byte's high and low nibbles.
When to use this tool
Use Bitwise: Packed Nibble Swap when checking the stated mask, field, parity or bit-index convention.
How to use the tool and how it works
- Enter byte. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Exchange a byte's high and low nibbles. Require byte 0..255; swappedByte = lowNibble*16+highNibble.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| byte | Byte | Required. Safe integer. Calculation range: 0 through 255, inclusive. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Returned calculated value or nested object under the stated output convention. | Required. Object. |
| result.swappedByte | Swapped Byte | Calculated result member: number. |
{
"input": {
"byte": 163
},
"output": {
"result": {
"swappedByte": 58
}
}
}Limitations and assumptions
- This is a within-byte permutation, not a multi-byte endian conversion or numeric digit reversal.
- Outputs are nested inside result. Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Choose an explicit bit order, word width and missing-position policy; use the complete record format and appropriate parsing or checksum methods for full validation.
References
Similar or alternative tools
- Bitword Extract One Packed Bit
Extract one packed bit as a Boolean.
- Bitwise: Field Mask From Low Bit Width
Return a shifted contiguous field mask.