type c_longlong = i64;
Equivalent to C's signed long long (long long) type.
This type will almost always be i64, but may differ on some systems. The C standard technically only requires that this type be a signed integer that is at least 64 bits and at least the size of a long, although in practice, no system would have a long long that is not an i64, as most systems do not have a standardised i128 type.
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
    https://doc.rust-lang.org/std/os/raw/type.c_longlong.html