pub fn be_f64<Input, Error>(input: &mut Input) -> PResult<f64, Error>where
Input: StreamIsPartial + Stream<Token = u8>,
<Input as Stream>::Slice: AsBytes,
Error: ParserError<Input>,
Expand description
Recognizes a big endian 8 bytes floating point number.
Complete version: Returns an error if there is not enough input data.
[Partial version][crate::_topic::partial]: Will return Err(winnow::error::ErrMode::Incomplete(_))
if there is not enough data.
§Example
use winnow::binary::be_f64;
fn parser(s: &[u8]) -> IResult<&[u8], f64> {
be_f64.parse_peek(s)
}
assert_eq!(parser(&[0x40, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00][..]), Ok((&b""[..], 12.5)));
assert_eq!(parser(&b"abc"[..]), Err(ErrMode::Backtrack(InputError::new(&b"abc"[..], ErrorKind::Slice))));
use winnow::binary::be_f64;
fn parser(s: Partial<&[u8]>) -> IResult<Partial<&[u8]>, f64> {
be_f64::<_, InputError<_>>.parse_peek(s)
}
assert_eq!(parser(Partial::new(&[0x40, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00][..])), Ok((Partial::new(&b""[..]), 12.5)));
assert_eq!(parser(Partial::new(&[0x01][..])), Err(ErrMode::Incomplete(Needed::new(7))));