micromath/float/
abs.rs

1//! Compute the absolute value of a single-precision float.
2//!
3//! Method described at: <https://bits.stephan-brumme.com/absFloat.html>
4
5use super::{F32, SIGN_MASK};
6
7impl F32 {
8    /// Computes the absolute value of `self`.
9    ///
10    /// Returns [`Self::NAN`] if the number is [`Self::NAN`].
11    pub fn abs(self) -> Self {
12        Self::from_bits(self.to_bits() & !SIGN_MASK)
13    }
14}
15
16#[cfg(test)]
17mod tests {
18    use super::F32;
19
20    #[test]
21    fn sanity_check() {
22        assert_eq!(F32::ONE.abs(), 1.0);
23        assert_eq!(F32::ZERO.abs(), 0.0);
24        assert_eq!(F32(-1.0).abs(), 1.0);
25    }
26
27    #[test]
28    fn nan() {
29        assert!(F32::NAN.abs().is_nan());
30    }
31}
micromath/float/abs.rs

micromath/float/
abs.rs
