| /* 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() |
| } |
