Function `be_i64`

fn be_i64<I, E: ParseError<I>>(input: I) -> IResult<I, i64, E>
where
    I: Input<Item = u8>

Recognizes a big endian signed 8 bytes integer.

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

# use nom::{Err, error::ErrorKind, Needed};
# use nom::Needed::Size;
use nom::number::complete::be_i64;

let parser = |s| {
  be_i64(s)
};

assert_eq!(parser(&b"\x00\x01\x02\x03\x04\x05\x06\x07abcefg"[..]), Ok((&b"abcefg"[..], 0x0001020304050607)));
assert_eq!(parser(&b"\x01"[..]), Err(Err::Error((&[0x01][..], ErrorKind::Eof))));