Function redox::intrinsics::i64_sub_with_overflow

pub unsafe extern "rust-intrinsic" fn i64_sub_with_overflow(x: i64, y: i64) -> (i64, bool)

Unstable (core_intrinsics)

: intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

Performs checked i64 subtraction.