ci,mod: bump go version and replace travis

.github/workflows/ci.yml

@@ -0,0 +1,68 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+    name: Build
+    strategy:
+      matrix:
+        # Do not move this line; it is referred to by README.md.
+        # Versions of Go that are explicitly supported by Gonum.
+        go-version: [1.24.x, 1.23.x]
+        # macOS is omitted due to rings failing for float precision
+        # reasons. Fixing this requires updating plot dep version
+        # but this brings a whole heap of other issues that I'm
+        # just don't have time for right now.
+        platform: [ubuntu-latest]
+
+    runs-on: ${{ matrix.platform }}
+    env:
+        GOPATH: ${{ github.workspace }}
+    defaults:
+        run:
+            working-directory: ${{ env.GOPATH }}/src/gonum.org/v1/exp
+
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+          path: ${{ env.GOPATH }}/src/gonum.org/v1/exp
+
+    - name: Cache-Go
+      uses: actions/cache@v4
+      with:
+        # In order:
+        # * Module download cache 
+        # * Build cache (Linux)
+        # * Build cache (Mac)
+        # * Build cache (Windows)
+        path: |
+          ~/go/pkg/mod
+          ~/.cache/go-build
+          ~/Library/Caches/go-build
+          '%LocalAppData%\go-build'
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+
+    - name: Test
+      run: |
+        ./.github/workflows/script.d/test.sh
+
+    - name: Coverage
+      if: matrix.platform == 'ubuntu-latest'
+      run: |
+        ./.github/workflows/script.d/test-coverage.sh
+
+    - name: Upload-Coverage
+      if: matrix.platform == 'ubuntu-latest'
+      uses: codecov/codecov-action@v1

.github/workflows/codecov.yml

@@ -0,0 +1,65 @@
+name: Codecov
+
+on:
+  pull_request:
+    branches: [ master ]
+    types:
+      - closed
+
+jobs:
+
+  build:
+    name: Build
+    if: github.event.pull_request.merged == true
+    strategy:
+      matrix:
+        go-version: [1.24.x]
+        platform: [ubuntu-latest]
+
+    runs-on: ${{ matrix.platform }}
+    env:
+        GOPATH: ${{ github.workspace }}
+    defaults:
+        run:
+            working-directory: ${{ env.GOPATH }}/src/gonum.org/v1/exp
+
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        path: ${{ env.GOPATH }}/src/gonum.org/v1/exp
+
+    - name: Cache-Go
+      uses: actions/cache@v4
+      with:
+        # In order:
+        # * Module download cache
+        # * Build cache (Linux)
+        # * Build cache (Mac)
+        # * Build cache (Windows)
+        path: |
+          ~/go/pkg/mod
+          ~/.cache/go-build
+          ~/Library/Caches/go-build
+          '%LocalAppData%\go-build'
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+
+    - name: Coverage
+      if: matrix.platform == 'ubuntu-latest'
+      run: |
+        ./.github/workflows/script.d/test-coverage.sh
+
+    - name: Upload-Coverage
+      if: matrix.platform == 'ubuntu-latest'
+      uses: codecov/codecov-action@v1
+      with:
+        override_pr: ${{ github.event.pull_request.number }}
+        override_commit: ${{ github.event.pull_request.merge_commit_sha }}
+        override_branch: "refs/heads/master"

.github/workflows/script.d/test-coverage.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+MODE=set
+PROFILE_OUT="${PWD}/profile.out"
+ACC_OUT="${PWD}/coverage.txt"
+
+testCover() {
+    # set the return value to 0 (successful)
+    retval=0
+    # get the directory to check from the parameter. Default to '.'
+    d=${1:-.}
+    # skip if there are no Go files here
+    ls $d/*.go &> /dev/null || return $retval
+    # switch to the directory to check
+    pushd $d > /dev/null
+    # create the coverage profile
+    coverageresult=$(go test $TAGS -coverprofile="${PROFILE_OUT}" -covermode=${MODE})
+    # output the result so we can check the shell output
+    echo ${coverageresult}
+    # append the results to acc.out if coverage didn't fail, else set the retval to 1 (failed)
+    ( [[ ${coverageresult} == *FAIL* ]] && retval=1 ) || ( [ -f "${PROFILE_OUT}" ] && grep -v "mode: ${MODE}" "${PROFILE_OUT}" >> "${ACC_OUT}" )
+    # return to our working dir
+    popd > /dev/null
+    # return our return value
+    return $retval
+}
+
+# Init coverage.txt
+echo "mode: ${MODE}" > $ACC_OUT
+
+# Run test coverage on all directories containing go files except testlapack, testblas, testgraph and testrand.
+find . -type d -not -path '*testlapack*' -and -not -path '*testblas*' -and -not -path '*testgraph*' -and -not -path '*testrand*' | while read d; do testCover $d || exit; done

.github/workflows/script.d/test.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# Travis clobbers GOARCH env vars so this is necessary here.
+if [[ -n $FORCE_GOARCH ]]; then
+	export GOARCH=$FORCE_GOARCH
+fi
+
+go get -d -v ./...
+go build -v ./...
+go test $TAGS -v ./...

go.mod

@@ -1,6 +1,6 @@
 module gonum.org/v1/exp
 
-go 1.19
+go 1.23.0
 
 require (
 	golang.org/x/exp v0.0.0-20240823005443-9b4947da3948