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Document the resulting values produced when using From<bool> on floats #108946

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Merged
merged 4 commits into from
Mar 10, 2023
Merged

Document the resulting values produced when using From<bool> on floats #108946

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d5bb605
Document the resulting values produced when using `From<bool>` on floats
bmoxb Mar 9, 2023
73016bb
Indicate that `0.0` refers to positive `0.0`
bmoxb Mar 9, 2023
8d2bdb8
Add missing comment for f64
bmoxb Mar 9, 2023
b439189
Add examples section which demonstrates the behaviour (specifically t…
bmoxb Mar 9, 2023
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3 changes: 2 additions & 1 deletion library/core/src/convert/num.rs
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Expand Up @@ -172,7 +172,8 @@ impl_from! { f32, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0"
#[stable(feature = "float_from_bool", since = "1.68.0")]
#[rustc_const_unstable(feature = "const_num_from_num", issue = "87852")]
impl const From<bool> for f32 {
/// Converts `bool` to `f32` losslessly.
/// Converts `bool` to `f32` losslessly. The resulting value is `0.0` for
/// `false` and `1.0` for `true` values.
#[inline]
fn from(small: bool) -> Self {
small as u8 as Self
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