Function std::intrinsics::rintf64

pub unsafe extern "rust-intrinsic" fn rintf64(x: f64) -> f64

🔬This is a nightly-only experimental API. (core_intrinsics)

Returns the nearest integer to an f64. May raise an inexact floating-point exception if the argument is not an integer.

The stabilized version of this intrinsic is f64::round_ties_even