(payload: &[u8], dim: usize)
| 37 | } |
| 38 | |
| 39 | fn decode_payload(payload: &[u8], dim: usize) -> Result<(f32, Vec<f32>), RerankError> { |
| 40 | let expected = 4 + dim * 4; |
| 41 | if payload.len() != expected { |
| 42 | return Err(RerankError::BadInput(format!( |
| 43 | "bbq distance: payload len {} != expected {} for dim {}", |
| 44 | payload.len(), |
| 45 | expected, |
| 46 | dim |
| 47 | ))); |
| 48 | } |
| 49 | let query_norm = f32::from_le_bytes( |
| 50 | payload[..4] |
| 51 | .try_into() |
| 52 | .expect("slice of 4 bytes always converts to [u8;4]"), |
| 53 | ); |
| 54 | let centered: Vec<f32> = payload[4..] |
| 55 | .chunks_exact(4) |
| 56 | .map(|b| f32::from_le_bytes(b.try_into().expect("chunks_exact(4) always 4 bytes"))) |
| 57 | .collect(); |
| 58 | Ok((query_norm, centered)) |
| 59 | } |
| 60 | |
| 61 | // ── Inline dequantize (mirrors BbqCodec::dequantize, which is private) ──────── |
| 62 |
no test coverage detected