Update CI setup, add dependabot, and update Julia compat to 1.10

.github/dependabot.yml

@@ -0,0 +1,7 @@
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "monthly"

.github/workflows/CI.yml

@@ -1,6 +1,5 @@
-# from https://discourse.julialang.org/t/easy-workflow-file-for-setting-up-github-actions-ci-for-your-julia-package/49765
-
 name: CI
+
 on:
   pull_request:
     branches:
@@ -9,49 +8,45 @@ on:
     branches:
       - master
     tags: '*'
+
+# needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
 jobs:
   test:
-    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
+    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         version:
-          - '1.0' # Replace this with the minimum Julia version that your package supports. E.g. if your package requires Julia 1.5 or higher, change this to '1.5'.
-          - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
-          - 'nightly'
+          - 'min'
+          - '1'
+          - 'pre'
         os:
           - ubuntu-latest
-        arch:
-          - x64
     steps:
-      - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
-          arch: ${{ matrix.arch }}
-      - uses: actions/cache@v1
-        env:
-          cache-name: cache-artifacts
-        with:
-          path: ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-test-${{ env.cache-name }}-
-            ${{ runner.os }}-test-
-            ${{ runner.os }}-
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
   docs:
     name: Documentation
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1'
       - run: |

Project.toml

@@ -27,7 +27,7 @@ ChangesOfVariables = "0.1"
 DocStringExtensions = "0.8, 0.9"
 InverseFunctions = "0.1"
 IrrationalConstants = "0.1, 0.2"
-julia = "1"
+julia = "1.10"
 
 [extras]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"

src/LogExpFunctions.jl

@@ -11,16 +11,6 @@ export xlogx, xlogy, xlog1py, xexpx, xexpy, logistic, logit, log1psq, log1pexp,
     softmax!, logcosh, logabssinh, cloglog, cexpexp,
     loglogistic, logitexp, log1mlogistic, logit1mexp
 
-# expm1(::Float16) is not defined in older Julia versions,
-# hence for better Float16 support we use an internal function instead
-# https://github.com/JuliaLang/julia/pull/40867
-if VERSION < v"1.7.0-DEV.1172"
-    _expm1(x) = expm1(x)
-    _expm1(x::Float16) = Float16(expm1(Float32(x)))
-else
-    const _expm1 = expm1
-end
-
 include("basicfuns.jl")
 include("logsumexp.jl")
 

src/basicfuns.jl

@@ -237,7 +237,7 @@ function log1mexp(x::Real)
     if x < oftype(float(x), IrrationalConstants.loghalf)
         return log1p(-exp(x))
     else
-        return log(-_expm1(x))
+        return log(-expm1(x))
     end
 end
 
@@ -246,15 +246,15 @@ $(SIGNATURES)
 
 Return `log(2 - exp(x))` evaluated as `log1p(-expm1(x))`
 """
-log2mexp(x::Real) = log1p(-_expm1(x))
+log2mexp(x::Real) = log1p(-expm1(x))
 
 """
 $(SIGNATURES)
 
 Return `log(exp(x) - 1)` or the “invsoftplus” function.  It is the inverse of
 [`log1pexp`](@ref) (aka “softplus”).
 """
-logexpm1(x::Real) = x <= 18.0 ? log(_expm1(x)) : x <= 33.3 ? x - exp(-x) : oftype(exp(-x), x)
+logexpm1(x::Real) = x <= 18.0 ? log(expm1(x)) : x <= 33.3 ? x - exp(-x) : oftype(exp(-x), x)
 logexpm1(x::Float32) = x <= 9f0 ? log(expm1(x)) : x <= 16f0 ? x - exp(-x) : oftype(exp(-x), x)
 
 const softplus = log1pexp
@@ -440,7 +440,7 @@ $(SIGNATURES)
 
 Compute the complementary double exponential, `1 - exp(-exp(x))`.
 """
-cexpexp(x) = -_expm1(-exp(x))
+cexpexp(x) = -expm1(-exp(x))
 
 #=
 this uses the identity:

test/basicfuns.jl

@@ -448,7 +448,7 @@ end
             @test cloglog(T(x)) ≈ cloglog_big(T(x))
             # Julia bug for Float32 and Float16 initially introduced in https://github.com/JuliaLang/julia/pull/37440
             # and fixed in https://github.com/JuliaLang/julia/pull/50989
-            if T === Float64 || VERSION < v"1.7.0-DEV.887" || VERSION >= v"1.11.0-DEV.310"
+            if T === Float64 || VERSION >= v"1.11.0-DEV.310"
                 @test cexpexp(T(x)) ≈ cexpexp_big(T(x))
             end
         end