Function `be_i64`

fn be_i64<I, E: ParseError<I>>() -> impl Parser<I, Output = i64, Error = E>
where
    I: Input<Item = u8>

Recognizes a big endian signed 8 bytes integer.

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

let mut parser = be_i64::<_, (_, ErrorKind)>();

assert_eq!(parser.parse(&b"\x00\x01\x02\x03\x04\x05\x06\x07abcd"[..]), Ok((&b"abcd"[..], 0x0001020304050607)));
assert_eq!(parser.parse(&b"\x01"[..]), Err(Err::Incomplete(Needed::new(7))));