You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: float.rs
    path of file: ./repos/cnosdb/tskv/src/tsm/codec
    
    the code of the file until where you have to start completion: use std::error::Error;

use q_compress::{auto_compress, auto_decompress, DEFAULT_COMPRESSION_LEVEL};

use crate::byte_utils::decode_be_f64;
use crate::tsm::codec::Encoding;

// note: encode/decode adapted from influxdb_iox
// https://github.com/influxdata/influxdb_iox/tree/main/influxdb_tsm/src/encoders

// SENTINEL is used to terminate a float-encoded block. A sentinel marker value
// is useful because blocks do not always end aligned to bytes, and spare empty
// bits can otherwise have undesirable semantic meaning.
const SENTINEL: u64 = 0x7ff8_0000_0000_00ff; // in the quiet NaN range.

fn is_sentinel_f64(v: f64, sent
    
    fn encode_special_values() {
        let src: Vec<f64> = vec![
            100.0,
            222.12,
            f64::from_bits(0x7ff8000000000001), /* Go representation of
                                                 * signalling NaN */
            45.324,
            f64::NAN,
            2453.023,
            -1234.235312132,
            f64::INFINITY,
            f64::NEG_INFINITY,
            9123419329123.1234,
            f64::from_bits(0x7ff0000000000002), // Prometheus stale NaN
            -19292929929292929292.22,
            -0.0000000000000000000000000092,
        ];
        let mut dst = vec![];

        // check for error
        f64_gorilla_encode(&src, &mut dst).expect("failed to encode src");

        let mut got = vec![];
        f64_gorilla_decode(&dst, &mut got).expect("failed to decode");

        // Verify decoded values.
        assert_eq!(got.len(), src.len());

        for (i, v) in got.iter().enumerate() {
            if v.is_nan() || v.is_infinite() {
                assert_eq!(src[i].to_bits(), v.to_bits());
            } else {
                // assert!(approximately_equal(src[i], *v));
            }
        }
    }