# Type Alias std::ffi::c_ulonglong

1.64.0 · source ·

    pub type c_ulonglong = u64;

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Equivalent to C’s `unsigned long long` type.

This type will almost always be `u64`, but may differ on some systems. The C standard technically only requires that this type be an unsigned integer with the size of a `long long`, although in practice, no system would have a `long long` that is not a `u64`, as most systems do not have a standardised `u128` type.