[CI] Add support for GitHub Actions

.github/workflows/pull_request.yml

@@ -0,0 +1,19 @@
+name: Pull request
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+  soundness:
+    name: Soundness
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+    with:
+      license_header_check_project_name: "Swift Numerics"
+      # https://github.com/apple/swift-numerics/issues/303
+      license_header_check_enabled: false
+      # https://github.com/apple/swift-numerics/issues/302
+      format_check_enabled: false

README.md

@@ -84,7 +84,7 @@ Swift Numerics uses GitHub issues to track bugs and features. We use pull reques
 1. Raise an issue with the [new module] tag.
 2. Raise a PR with an implementation sketch.
 3. Once you have some consensus, ask an admin to create a feature branch against which PRs can be raised.
-4. When the design has stabilized and is functional enough to be useful, raise a PR to merge the new module to master.
+4. When the design has stabilized and is functional enough to be useful, raise a PR to merge the new module to main.
 
 ### How to propose a new feature for an existing module
 

Sources/RealModule/README.md

@@ -73,5 +73,5 @@ Not having this protocol is a significant missing feature for numerical computin
 
 [ErrorFunction]: https://en.wikipedia.org/wiki/Error_function
 [GammaFunction]: https://en.wikipedia.org/wiki/Gamma_function
-[SE-0246]: https://github.com/apple/swift-evolution/blob/master/proposals/0246-mathable.md
+[SE-0246]: https://github.com/swiftlang/swift-evolution/blob/main/proposals/0246-mathable.md
 [Sigmoid]: https://en.wikipedia.org/wiki/Sigmoid_function

Tests/RealTests/RelaxedArithmeticTests.swift

@@ -102,7 +102,7 @@ final class RelaxedArithmeticTests: XCTestCase {
     // Summing all values in an array can be associated however we want, but
     // has to satisfy the usual error bound of 0.5 * sum.ulp * numberOfElements.
     // We don't have a golden reference, but we can compare two sums with twice
-    // the bound for a sanity check.
+    // the bound for a sanity check. // ignore-unacceptable-language
     let array = (0 ..< 128).map { _ in T.random(in: 1 ..< 2) }
     var ref = strictSum(array)
     var tst = relaxedSum(array)