Add new methods for MSRV 1.87

Author: cuviper

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         rust: [
-          1.86.0, # MSRV
+          1.87.0, # MSRV
           stable,
           beta,
           nightly,
@@ -52,7 +52,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.86.0
+      - uses: dtolnay/rust-toolchain@1.87.0
         with:
           components: rustfmt
       - run: cargo fmt --all --check

Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 keywords = ["generic", "mathematics", "numerics", "primitive"]
 categories = ["algorithms", "science", "no-std"]
 edition = "2024"
-rust-version = "1.86"
+rust-version = "1.87"
 
 [features]
 default = ["std"]

src/integer.rs

@@ -382,6 +382,12 @@ pub trait PrimitiveInteger:
     /// Returns the number of trailing zeros in the binary representation of `self`.
     fn trailing_zeros(self) -> u32;
 
+    /// Unbounded shift left. Computes `self << rhs`, without bounding the value of `rhs`.
+    fn unbounded_shl(self, rhs: u32) -> Self;
+
+    /// Unbounded shift right. Computes `self >> rhs`, without bounding the value of `rhs`.
+    fn unbounded_shr(self, rhs: u32) -> Self;
+
     /// Wrapping (modular) addition. Computes `self + rhs`, wrapping around at the boundary of the
     /// type.
     fn wrapping_add(self, rhs: Self) -> Self;
@@ -588,6 +594,8 @@ macro_rules! impl_integer {
                 fn to_le(self) -> Self;
                 fn trailing_ones(self) -> u32;
                 fn trailing_zeros(self) -> u32;
+                fn unbounded_shl(self, rhs: u32) -> Self;
+                fn unbounded_shr(self, rhs: u32) -> Self;
                 fn wrapping_add(self, rhs: Self) -> Self;
                 fn wrapping_div(self, rhs: Self) -> Self;
                 fn wrapping_div_euclid(self, rhs: Self) -> Self;

src/signed.rs

@@ -60,6 +60,9 @@ pub trait PrimitiveSigned: PrimitiveInteger + From<i8> + core::ops::Neg<Output =
     /// Computes the absolute difference between `self` and `other`.
     fn abs_diff(self, other: Self) -> Self::Unsigned;
 
+    /// Returns the bit pattern of `self` reinterpreted as an unsigned integer of the same size.
+    fn cast_unsigned(self) -> Self::Unsigned;
+
     /// Checked absolute value. Computes `self.abs()`, returning `None` if `self == MIN`.
     fn checked_abs(self) -> Option<Self>;
 
@@ -80,6 +83,9 @@ pub trait PrimitiveSigned: PrimitiveInteger + From<i8> + core::ops::Neg<Output =
     /// Returns true if `self` is positive and false if the number is zero or negative.
     fn is_positive(self) -> bool;
 
+    /// Calculates the middle point of `self` and `other`.
+    fn midpoint(self, other: Self) -> Self;
+
     /// Computes the absolute value of `self`. Returns a tuple of the absolute version of `self`
     /// along with a boolean indicating whether an overflow happened.
     fn overflowing_abs(self) -> (Self, bool);
@@ -141,12 +147,14 @@ macro_rules! impl_signed {
             forward! {
                 fn abs(self) -> Self;
                 fn abs_diff(self, other: Self) -> Self::Unsigned;
+                fn cast_unsigned(self) -> Self::Unsigned;
                 fn checked_abs(self) -> Option<Self>;
                 fn checked_add_unsigned(self, rhs: Self::Unsigned) -> Option<Self>;
                 fn checked_isqrt(self) -> Option<Self>;
                 fn checked_sub_unsigned(self, rhs: Self::Unsigned) -> Option<Self>;
                 fn is_negative(self) -> bool;
                 fn is_positive(self) -> bool;
+                fn midpoint(self, other: Self) -> Self;
                 fn overflowing_abs(self) -> (Self, bool);
                 fn overflowing_add_unsigned(self, rhs: Self::Unsigned) -> (Self, bool);
                 fn overflowing_sub_unsigned(self, rhs: Self::Unsigned) -> (Self, bool);

src/unsigned.rs

@@ -40,6 +40,9 @@ pub trait PrimitiveUnsigned: PrimitiveInteger + From<u8> {
     /// Computes the absolute difference between `self` and `other`.
     fn abs_diff(self, other: Self) -> Self;
 
+    /// Returns the bit pattern of `self` reinterpreted as a signed integer of the same size.
+    fn cast_signed(self) -> Self::Signed;
+
     /// Checked addition with a signed integer. Computes `self + rhs`, returning `None` if overflow
     /// occurred.
     fn checked_add_signed(self, rhs: Self::Signed) -> Option<Self>;
@@ -56,7 +59,10 @@ pub trait PrimitiveUnsigned: PrimitiveInteger + From<u8> {
     /// Calculates the quotient of `self` and rhs, rounding the result towards positive infinity.
     fn div_ceil(self, rhs: Self) -> Self;
 
-    /// Returns true if and only if `self == 2^k` for some `k`.
+    /// Returns `true` if `self` is an integer multiple of `rhs`, and false otherwise.
+    fn is_multiple_of(self, rhs: Self) -> bool;
+
+    /// Returns `true` if and only if `self == 2^k` for some `k`.
     fn is_power_of_two(self) -> bool;
 
     /// Calculates the middle point of `self` and `other`.
@@ -94,10 +100,12 @@ macro_rules! impl_unsigned {
 
             forward! {
                 fn abs_diff(self, other: Self) -> Self;
+                fn cast_signed(self) -> Self::Signed;
                 fn checked_add_signed(self, rhs: Self::Signed) -> Option<Self>;
                 fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>;
                 fn checked_next_power_of_two(self) -> Option<Self>;
                 fn div_ceil(self, rhs: Self) -> Self;
+                fn is_multiple_of(self, rhs: Self) -> bool;
                 fn is_power_of_two(self) -> bool;
                 fn midpoint(self, other: Self) -> Self;
                 fn next_multiple_of(self, rhs: Self) -> Self;