Function core::intrinsics::roundf64

pub unsafe extern "rust-intrinsic" fn roundf64(x: f64) -> f64

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

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

返回最接近 f64 的整数。将中途案例从零舍入。

此内联函数的稳定版本是 f64::round