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Rephrase -0.0 docs

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This commit is contained in:
Jubilee Young 2020-11-01 10:31:08 -08:00
parent 6fdb8d8b36
commit e8dfbaca76
1 changed files with 4 additions and 4 deletions
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8
library/std/src/primitive_docs.rs
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@ -807,10 +807,10 @@ mod prim_tuple {}
///
/// Additionally, `f32` can represent some special values:
///
/// - `-0`: this value exists due to how floats are encoded. -0 == 0 is true, but for other
/// operations they are not equal and the difference can be useful to certain algorithms.
/// For example, operations on negative numbers that underflow to 0 will usually generate -0
/// instead of +0.
/// - -0.0: IEEE 754 floating point numbers have a bit that indicates their sign, so -0.0 is a
/// possible value. For comparison `-0.0 == +0.0` is true but floating point operations can
/// carry the sign bit through arithmetic operations. This means `-1.0 * 0.0` produces -0.0 and
/// a negative number rounded to a value smaller than a float can represent also produces -0.0.
/// - [∞](#associatedconstant.INFINITY) and
/// [−∞](#associatedconstant.NEG_INFINITY): these result from calculations
/// like `1.0 / 0.0`.