BitWiseLeadingOnes / Computation Layer
Count consecutive one bits from the most significant bit until the first zero. Similar to GCC's __builtin_clz with bitwise NOT.
Example bit pattern: 11110000 → 4 leading ones
Common applications:
- Priority encoding
- Network subnet masks
- Permission bit analysis
- Range boundary detection
- Binary data alignment
Note: Count starts from the most significant bit position.
Table
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Table
Transforms
[, ...]Select
columnThe integer column to count leading ones. Examples:
- 0xF000 → 4 leading ones
- 0xFFFF → 16 leading ones
- 0x0FFF → 0 leading ones
Must be an integer type column
AsColumn
nameName for the new column. If not provided, the system generates a unique name. If AsColumn matches an existing column, the existing column is replaced. The name should follow valid column naming conventions.