3 fn parse_sign<'a>(bytes: &'a [u8]) -> (bool, &'a [u8]) {  in parse_sign()
4     match bytes.get(0) {  in parse_sign()
5         Some(&b'+') => (true, &bytes[1..]),  in parse_sign()
6         Some(&b'-') => (false, &bytes[1..]),  in parse_sign()
7         _ => (true, bytes),  in parse_sign()
56 fn ltrim_zero<'a>(bytes: &'a [u8]) -> &'a [u8] {  in ltrim_zero()
57     let count = bytes.iter().take_while(|&&si| si == b'0').count();  in ltrim_zero()
58     &bytes[count..]  in ltrim_zero()
63 fn rtrim_zero<'a>(bytes: &'a [u8]) -> &'a [u8] {  in rtrim_zero()
64     let count = bytes.iter().rev().take_while(|&&si| si == b'0').count();  in rtrim_zero()
65     let index = bytes.len() - count;  in rtrim_zero()
66     &bytes[..index]  in rtrim_zero()
130 pub fn parse_float<'a, F>(bytes: &'a [u8]) -> (F, &'a [u8])  in parse_float()
134     let start = bytes;  in parse_float()
137     let (is_positive, bytes) = parse_sign(bytes);  in parse_float()
140     if case_insensitive_starts_with(bytes.iter(), b"NaN".iter()) {  in parse_float()
145         return (float, &bytes[3..]);  in parse_float()
146     } else if case_insensitive_starts_with(bytes.iter(), b"Infinity".iter()) {  in parse_float()
151         return (float, &bytes[8..]);  in parse_float()
152     } else if case_insensitive_starts_with(bytes.iter(), b"inf".iter()) {  in parse_float()
157         return (float, &bytes[3..]);  in parse_float()
164     let (integer_slc, bytes) = consume_digits(bytes);  in parse_float()
165     let (fraction_slc, bytes) = match bytes.first() {  in parse_float()
166         Some(&b'.') => consume_digits(&bytes[1..]),  in parse_float()
167         _ => (&bytes[..0], bytes),  in parse_float()
169     let (exponent, bytes) = match bytes.first() {  in parse_float()
172             let (is_positive, bytes) = parse_sign(&bytes[1..]);  in parse_float()
173             let (exponent, bytes) = consume_digits(bytes);  in parse_float()
174             (parse_exponent(exponent, is_positive), bytes)  in parse_float()
176         _ => (0, bytes),  in parse_float()
179     if bytes.len() == start.len() {  in parse_float()
180         return (F::from_u64(0), bytes);  in parse_float()
205     (float, bytes)  in parse_float()