Function winnow::binary::le_f32

source · 
pub fn le_f32<Input, Error>(input: &mut Input) -> PResult<f32, Error>
where
    Input: StreamIsPartial + Stream<Token = u8>,
    Error: ParserError<Input>,
Expand description

Recognizes a little endian 4 bytes floating point number.

Complete version: Returns an error if there is not enough input data.

Partial version: Will return Err(winnow::error::ErrMode::Incomplete(_)) if there is not enough data.

§Example

use winnow::binary::le_f32;

fn parser(s: &[u8]) -> IResult<&[u8], f32> {
      le_f32.parse_peek(s)
}

assert_eq!(parser(&[0x00, 0x00, 0x48, 0x41][..]), Ok((&b""[..], 12.5)));
assert_eq!(parser(&b"abc"[..]), Err(ErrMode::Backtrack(InputError::new(&b"abc"[..], ErrorKind::Slice))));
use winnow::binary::le_f32;

fn parser(s: Partial<&[u8]>) -> IResult<Partial<&[u8]>, f32> {
      le_f32::<_, InputError<_>>.parse_peek(s)
}

assert_eq!(parser(Partial::new(&[0x00, 0x00, 0x48, 0x41][..])), Ok((Partial::new(&b""[..]), 12.5)));
assert_eq!(parser(Partial::new(&[0x01][..])), Err(ErrMode::Incomplete(Needed::new(3))));