Module smallfloat 

SmallFloat: 1-byte quantized document lengths for BM25 fieldnorms.

Maps u32 doc lengths to a monotonic 0..255 byte scale.

• Byte 0 → length 0
• Byte 255 → length ~16M+
• Monotonic: larger length → larger (or equal) byte
• Max relative error dampened by BM25’s b=0.75 length normalization
• 4x space reduction vs raw u32

Functions

decode

Decode a byte back to an approximate u32 value.

encode

Encode a u32 value into a single byte.