| /* SPDX-License-Identifier: MIT OR Apache-2.0 */ | |
| //! IEEE 754-2019 `maximumNumber`. | |
| //! | |
| //! Per the spec, returns: | |
| //! - `x` if `x > y` | |
| //! - `y` if `y > x` | |
| //! - +0.0 if x and y are zero with opposite signs | |
| //! - Either `x` or `y` if `x == y` and the signs are the same | |
| //! - Non-NaN if one operand is NaN | |
| //! - qNaN if both operands are NaNx | |
| //! | |
| //! Note that the IEEE 754-2019 specifies that a sNaN in either argument should signal invalid, | |
| //! but we do not implement this. | |
| use crate::support::Float; | |
| #[inline] | |
| pub fn fmaximum_num<F: Float>(x: F, y: F) -> F { | |
| let res = if x > y || y.is_nan() { | |
| x | |
| } else if y > x || x.is_nan() { | |
| y | |
| } else if x.is_sign_positive() { | |
| x | |
| } else { | |
| y | |
| }; | |
| res.canonicalize() | |
| } |