Add PrimitiveFloat::next_down and next_up (MSRV 1.86)

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         rust: [
-          1.85.0, # MSRV
+          1.86.0, # MSRV
           stable,
           beta,
           nightly,
@@ -52,7 +52,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.85.0
+      - uses: dtolnay/rust-toolchain@1.86.0
         with:
           components: rustfmt
       - run: cargo fmt --all --check

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "num-primitive"
-version = "0.2.1"
+version = "0.2.2"
 description = "Traits for primitive numeric types"
 repository = "https://github.com/rust-num/num-primitive"
 license = "MIT OR Apache-2.0"
 keywords = ["generic", "mathematics", "numerics", "primitive"]
 categories = ["algorithms", "science", "no-std"]
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.86"
 
 [features]
 default = ["std"]

RELEASES.md

@@ -1,3 +1,8 @@
+# Release 0.2.2 (2025-12-16)
+
+- Updated to MSRV 1.86.
+- Added `PrimitiveFloat::next_down` and `next_up`.
+
 # Release 0.2.1 (2025-12-16)
 
 - Doc-only, updated 0.1 references to 0.2.

src/float.rs

@@ -224,6 +224,12 @@ pub trait PrimitiveFloat:
     /// Returns the minimum of the two numbers, ignoring NaN.
     fn min(self, other: Self) -> Self;
 
+    /// Returns the greatest number less than `self`.
+    fn next_down(self) -> Self;
+
+    /// Returns the least number greater than `self`.
+    fn next_up(self) -> Self;
+
     /// Takes the reciprocal (inverse) of a number, `1/x`.
     fn recip(self) -> Self;
 
@@ -523,6 +529,8 @@ macro_rules! impl_float {
                 fn max(self, other: Self) -> Self;
                 fn midpoint(self, other: Self) -> Self;
                 fn min(self, other: Self) -> Self;
+                fn next_down(self) -> Self;
+                fn next_up(self) -> Self;
                 fn recip(self) -> Self;
                 fn signum(self) -> Self;
                 fn to_bits(self) -> Self::Bits;