Merge #240

240: Upgrade to 2018 edition, MSRV 1.31 r=cuviper a=cuviper



Co-authored-by: Josh Stone <[email protected]>

Author: bors[bot]

.github/workflows/ci.yaml

@@ -12,7 +12,17 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: [1.8.0, 1.15.0, 1.20.0, 1.26.0, 1.31.0, stable, beta, nightly]
+        rust: [
+          1.31.0, # MSRV
+          1.35.0, # has_copysign
+          1.37.0, # has_reverse_bits
+          1.38.0, # has_div_euclid
+          1.44.0, # has_to_int_unchecked
+          1.46.0, # has_leading_trailing_ones
+          stable,
+          beta,
+          nightly,
+        ]
     steps:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@master
@@ -44,7 +54,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           target: thumbv6m-none-eabi
-      - run: cargo build --target thumbv6m-none-eabi --no-default-features --features i128
+      - run: cargo build --target thumbv6m-none-eabi --no-default-features
       - run: cargo build --target thumbv6m-none-eabi --no-default-features --features libm
 
   fmt:

.github/workflows/master.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: [1.8.0, stable]
+        rust: [1.31.0, stable]
     steps:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@master

.github/workflows/pr.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: [1.8.0, stable]
+        rust: [1.31.0, stable]
     steps:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@master

Cargo.toml

@@ -12,6 +12,8 @@ version = "0.2.15"
 readme = "README.md"
 build = "build.rs"
 exclude = ["/bors.toml", "/ci/*", "/.github/*"]
+edition = "2018"
+rust-version = "1.31"
 
 [package.metadata.docs.rs]
 features = ["std"]
@@ -22,6 +24,8 @@ libm = { version = "0.2.0", optional = true }
 [features]
 default = ["std"]
 std = []
+
+# vestigial features, now always in effect
 i128 = []
 
 [build-dependencies]

README.md

@@ -2,7 +2,7 @@
 
 [![crate](https://img.shields.io/crates/v/num-traits.svg)](https://crates.io/crates/num-traits)
 [![documentation](https://docs.rs/num-traits/badge.svg)](https://docs.rs/num-traits)
-[![minimum rustc 1.8](https://img.shields.io/badge/rustc-1.8+-red.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
+[![minimum rustc 1.31](https://img.shields.io/badge/rustc-1.31+-red.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
 [![build status](https://github.com/rust-num/num-traits/workflows/master/badge.svg)](https://github.com/rust-num/num-traits/actions)
 
 Numeric traits for generic mathematics in Rust.
@@ -29,23 +29,18 @@ default-features = false
 ```
 
 The `Float` and `Real` traits are only available when either `std` or `libm` is enabled.  
-The `libm` feature is only available with Rust 1.31 and later ([see PR #99](https://github.com/rust-num/num-traits/pull/99)).
 
 The `FloatCore` trait is always available.  `MulAdd` and `MulAddAssign` for `f32`
 and `f64` also require `std` or `libm`, as do implementations of signed and floating-
 point exponents in `Pow`.
 
-Implementations for `i128` and `u128` are only available with Rust 1.26 and
-later.  The build script automatically detects this, but you can make it
-mandatory by enabling the `i128` crate feature.
-
 ## Releases
 
 Release notes are available in [RELEASES.md](RELEASES.md).
 
 ## Compatibility
 
-The `num-traits` crate is tested for rustc 1.8 and greater.
+The `num-traits` crate is tested for rustc 1.31 and greater.
 
 ## License
 

bors.toml

@@ -1,9 +1,10 @@
 status = [
-  "Test (1.8.0)",
-  "Test (1.15.0)",
-  "Test (1.20.0)",
-  "Test (1.26.0)",
   "Test (1.31.0)",
+  "Test (1.35.0)",
+  "Test (1.37.0)",
+  "Test (1.38.0)",
+  "Test (1.44.0)",
+  "Test (1.46.0)",
   "Test (stable)",
   "Test (beta)",
   "Test (nightly)",

build.rs

@@ -1,24 +1,15 @@
-extern crate autocfg;
-
 use std::env;
 
 fn main() {
     let ac = autocfg::new();
 
-    // If the "i128" feature is explicity requested, don't bother probing for it.
-    // It will still cause a build error if that was set improperly.
-    if env::var_os("CARGO_FEATURE_I128").is_some() || ac.probe_type("i128") {
-        autocfg::emit("has_i128");
-    }
-
     ac.emit_expression_cfg(
         "unsafe { 1f64.to_int_unchecked::<i32>() }",
         "has_to_int_unchecked",
     );
 
     ac.emit_expression_cfg("1u32.reverse_bits()", "has_reverse_bits");
     ac.emit_expression_cfg("1u32.trailing_ones()", "has_leading_trailing_ones");
-    ac.emit_expression_cfg("{ let mut x = 1; x += &2; }", "has_int_assignop_ref");
     ac.emit_expression_cfg("1u32.div_euclid(1u32)", "has_div_euclid");
 
     if env::var_os("CARGO_FEATURE_STD").is_some() {

ci/rustup.sh

@@ -5,6 +5,6 @@
 set -ex
 
 ci=$(dirname $0)
-for version in 1.8.0 1.15.0 1.20.0 1.26.0 1.31.0 stable beta nightly; do
+for version in 1.31.0 1.35.0 1.37.0 1.38.0 1.44.0 1.46.0 stable beta nightly; do
     rustup run "$version" "$ci/test_full.sh"
 done

ci/test_full.sh

@@ -3,7 +3,7 @@
 set -e
 
 CRATE=num-traits
-MSRV=1.8
+MSRV=1.31
 
 get_rust_version() {
   local array=($(rustc --version));
@@ -27,9 +27,7 @@ if ! check_version $MSRV ; then
   exit 1
 fi
 
-FEATURES=()
-check_version 1.26 && FEATURES+=(i128)
-check_version 1.27 && FEATURES+=(libm)
+FEATURES=(libm)
 echo "Testing supported features: ${FEATURES[*]}"
 
 set -x

src/bounds.rs

@@ -1,9 +1,7 @@
 use core::num::Wrapping;
 use core::{f32, f64};
-#[cfg(has_i128)]
-use core::{i128, u128};
-use core::{i16, i32, i64, i8, isize};
-use core::{u16, u32, u64, u8, usize};
+use core::{i128, i16, i32, i64, i8, isize};
+use core::{u128, u16, u32, u64, u8, usize};
 
 /// Numbers which have upper and lower bounds
 pub trait Bounded {
@@ -61,15 +59,13 @@ bounded_impl!(u8, u8::MIN, u8::MAX);
 bounded_impl!(u16, u16::MIN, u16::MAX);
 bounded_impl!(u32, u32::MIN, u32::MAX);
 bounded_impl!(u64, u64::MIN, u64::MAX);
-#[cfg(has_i128)]
 bounded_impl!(u128, u128::MIN, u128::MAX);
 
 bounded_impl!(isize, isize::MIN, isize::MAX);
 bounded_impl!(i8, i8::MIN, i8::MAX);
 bounded_impl!(i16, i16::MIN, i16::MAX);
 bounded_impl!(i32, i32::MIN, i32::MAX);
 bounded_impl!(i64, i64::MIN, i64::MAX);
-#[cfg(has_i128)]
 bounded_impl!(i128, i128::MIN, i128::MAX);
 
 impl<T: Bounded> Bounded for Wrapping<T> {
@@ -130,7 +126,6 @@ fn wrapping_bounded() {
     test_wrapping_bounded!(usize u8 u16 u32 u64 isize i8 i16 i32 i64);
 }
 
-#[cfg(has_i128)]
 #[test]
 fn wrapping_bounded_i128() {
     macro_rules! test_wrapping_bounded {