Function nom::number::complete::be_f64

pub fn be_f64<'a, E: ParseError<&'a [u8]>>(
    input: &'a [u8]
) -> IResult<&'a [u8], f64, E>

Recognizes a big endian 8 bytes floating point number

complete version: returns an error if there is not enough input data

use nom::number::complete::be_f64;

let parser = |s| {
  be_f64(s)
};

assert_eq!(parser(&[0x40, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00][..]), Ok((&b""[..], 12.5)));
assert_eq!(parser(b"abc"), Err(Err::Error((&b"abc"[..], ErrorKind::Eof))));