fhelium.core.scale

Validation helpers for per-value CKKS scales.

coerce_scale

function View source

def coerce_scale(value: Any, *, value_name: str) -> float: ...

Validate and convert one actual CKKS scale to binary64.

The result is a Python float satisfying $0<\mathrm{\Delta }(v)<\mathrm{\infty }$. This conversion does not normalize the scale to default_scale or alter any value payload. Centralizing the conversion prevents construction and operation paths from assigning different meanings to zero, infinities, NaNs, or booleans.