Improwing speed and reduce code size when fast_float is using as internal parser code.

.github/pull_request_template.md

@@ -1,4 +1,4 @@
-We have benchmarks, please consider running them: [see our README for details](https://github.com/fastfloat/fast_float/blob/main/README.md#benchmarking). We expect you to run our benchmarks if you make claims with respect to the performance.
+We have benchmarks, please consider running them: [see our README for details](https://github.com/irainman/fast_float/blob/main/README.md#benchmarking). We expect you to run our benchmarks if you make claims with respect to the performance.
 
 
 Our CI tests check formatting automating. If such a test fails, please consider running the bash script:

.github/workflows/alpine.yml

@@ -1,13 +1,17 @@
 name: Alpine Linux
+
 on:
-  - push
-  - pull_request
+  push:
+  pull_request:
 
 jobs:
   build:
     name: Build on Alpine ${{ matrix.arch }}
+
     runs-on: ubuntu-latest
+
     strategy:
+      fail-fast: false
       matrix:
         arch:
           - x86_64
@@ -16,32 +20,44 @@ jobs:
           - armv7
           - ppc64le
           - riscv64
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v7
 
-      - name: Install latest Alpine Linux for ${{ matrix.arch }}
+      - name: Install Alpine Linux for ${{ matrix.arch }}
         uses: jirutka/setup-alpine@v1
         with:
           arch: ${{ matrix.arch }}
-          branch: ${{ matrix.arch == 'riscv64' && 'edge' || 'latest-stable' }}
+
+          # Keep CI reproducible.
+          # riscv64 currently uses edge because stable Alpine support
+          # for this architecture can lag behind the other architectures.
+          branch: ${{ matrix.arch == 'riscv64' && 'edge' || 'v3.23' }}
+
           packages: >
             build-base
             cmake
-            g++
             linux-headers
             git
             bash
-            build-base
+
       - name: Prepare
         run: |
-          cmake -DFASTFLOAT_TEST=ON -B build
+          cmake \
+            -DFASTFLOAT_TEST=ON \
+            -B build
         shell: alpine.sh {0}
+
       - name: Build
         run: |
           cmake --build build
         shell: alpine.sh {0}
+
       - name: Test
         run: |
-          ctest --test-dir build -R basictest
+          ctest \
+            --test-dir build \
+            -R basictest \
+            --output-on-failure
         shell: alpine.sh {0}

.github/workflows/lint_and_format_check.yml

@@ -29,5 +29,5 @@ jobs:
       - name: Run clang-format
         uses: jidicula/clang-format-action@654a770daa28443dd111d133e4083e21c1075674 # v4.18.0
         with:
-          clang-format-version: '17'
+          clang-format-version: '18'
 

.github/workflows/ubuntu.yml

@@ -0,0 +1,16 @@
+name: Ubuntu latest CI
+
+on: [push, pull_request]
+
+jobs:
+  ubuntu-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - name: Use cmake
+        run: |
+          mkdir build &&
+          cd build &&
+          cmake -DFASTFLOAT_TEST=ON  ..  &&
+          cmake --build .   &&
+          ctest --output-on-failure

.github/workflows/ubuntu22-clang.yml

@@ -1,4 +1,4 @@
-name: Ubuntu 22.04 CI (clang 14)
+name: Ubuntu 22.04 CI (clang 15)
 
 on: [push, pull_request]
 
@@ -7,19 +7,19 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v7
-      - name: Install clang++-14
-        run: sudo apt-get install -y clang++-14
+      - name: Install clang++-15
+        run: sudo apt-get install -y clang++-15
       - name: Use cmake
         run: |
           mkdir build &&
           cd build &&
-          CXX=clang++-14 cmake -DFASTFLOAT_TEST=ON  ..  &&
+          CXX=clang++-15 cmake -DFASTFLOAT_TEST=ON  ..  &&
           cmake --build .   &&
           ctest --output-on-failure
       - name: Use cmake CXX20
         run: |
           mkdir build20 &&
           cd build20 &&
-          CXX=clang++-14 cmake -DFASTFLOAT_CONSTEXPR_TESTS=ON -DFASTFLOAT_CXX_STANDARD=20 -DFASTFLOAT_TEST=ON  ..  &&
+          CXX=clang++-15 cmake -DFASTFLOAT_CXX_STANDARD=20 -DFASTFLOAT_TEST=ON  ..  &&
           cmake --build .   &&
           ctest --output-on-failure

.github/workflows/vs17-arm-ci.yml

@@ -5,19 +5,19 @@ on: [push, pull_request]
 jobs:
   ci:
     name: vs17/${{matrix.arch}}/${{matrix.cfg}}
-    runs-on: windows-latest
+    runs-on: windows-2022
     strategy:
       fail-fast: false
       matrix:
         include:
-          - {gen: Visual Studio 18 2026, arch: ARM64, cfg: Release}
-          - {gen: Visual Studio 18 2026, arch: ARM64, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: ARM64, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: ARM64, cfg: Debug}
     steps:
       - name: checkout
         uses: actions/checkout@v7
       - name: configure
         run: |
-          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DCMAKE_CROSSCOMPILING=1 -DFASTFLOAT_TEST=ON
+          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DCMAKE_CROSSCOMPILING=1 -DFASTFLOAT_CXX_STANDARD=14 -DFASTFLOAT_TEST=ON
       - name: build
         run: |
           cmake --build build --verbose --config ${{matrix.cfg}} --parallel

.github/workflows/vs17-ci.yml

@@ -5,21 +5,21 @@ on: [push, pull_request]
 jobs:
   ci:
     name: vs17/${{matrix.arch}}/${{matrix.cfg}}
-    runs-on: windows-latest
+    runs-on: windows-2022
     strategy:
       fail-fast: false
       matrix:
         include:
-          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Release}
-          #- {gen: Visual Studio 18 2026, arch: Win32, cfg: Debug}
-          - {gen: Visual Studio 18 2026, arch: x64, cfg: Release}
-          - {gen: Visual Studio 18 2026, arch: x64, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: Win32, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: Win32, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: x64, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, cfg: Debug}
     steps:
       - name: checkout
         uses: actions/checkout@v7
       - name: configure
         run: |
-          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DFASTFLOAT_BENCHMARKS=ON  -DFASTFLOAT_TEST=ON -DCMAKE_INSTALL_PREFIX:PATH=destination
+          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DFASTFLOAT_CXX_STANDARD=14 -DFASTFLOAT_BENCHMARKS=ON -DFASTFLOAT_TEST=ON -DCMAKE_INSTALL_PREFIX:PATH=destination
       - name: build
         run: |
           cmake --build build --verbose --config ${{matrix.cfg}} --parallel

.github/workflows/vs17-clang-ci.yml

@@ -5,15 +5,15 @@ on: [push, pull_request]
 jobs:
   ci:
     name: vs17/${{matrix.arch}}/${{matrix.cfg}}
-    runs-on: windows-latest
+    runs-on: windows-2022
     strategy:
       fail-fast: false
       matrix:
         include:
-          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Release}
-          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Debug}
-          - {gen: Visual Studio 18 2026, arch: x64, cfg: Release}
-          - {gen: Visual Studio 18 2026, arch: x64, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: Win32, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: Win32, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: x64, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, cfg: Debug}
     steps:
       - name: checkout
         uses: actions/checkout@v7

.github/workflows/vs17-cxx20.yml

@@ -5,15 +5,15 @@ on: [push, pull_request]
 jobs:
   ci:
     name: vs17/${{matrix.arch}}/${{matrix.cfg}}
-    runs-on: windows-latest
+    runs-on: windows-2022
     strategy:
       fail-fast: false
       matrix:
         include:
-          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Release}
-          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Debug}
-          - {gen: Visual Studio 18 2026, arch: x64, cfg: Release}
-          - {gen: Visual Studio 18 2026, arch: x64, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: Win32, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: Win32, cfg: Debug}
+          - {gen: Visual Studio 17 2022, arch: x64, cfg: Release}
+          - {gen: Visual Studio 17 2022, arch: x64, cfg: Debug}
     steps:
       - name: checkout
         uses: actions/checkout@v7

.github/workflows/vs18-arm-ci.yml

@@ -0,0 +1,28 @@
+name: VS18-ARM-CI
+
+on: [push, pull_request]
+
+jobs:
+  ci:
+    name: vs18/${{matrix.arch}}/${{matrix.cfg}}
+    runs-on: windows-2025
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - {gen: Visual Studio 18 2026, arch: ARM64, cfg: Release}
+          - {gen: Visual Studio 18 2026, arch: ARM64, cfg: Debug}
+    steps:
+      - name: checkout
+        uses: actions/checkout@v7
+      - name: configure
+        run: |
+          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DCMAKE_CROSSCOMPILING=1 -DFASTFLOAT_CXX_STANDARD=14 -DFASTFLOAT_TEST=ON
+      - name: build
+        run: |
+          cmake --build build --verbose --config ${{matrix.cfg}} --parallel
+      # disabled because it requires a toolchain
+      #- name: test
+      #  run: |
+      #    cd build &&
+      #    ctest --output-on-failure -C ${{matrix.cfg}}

.github/workflows/vs18-ci.yml

@@ -0,0 +1,43 @@
+name: VS18-CI
+
+on: [push, pull_request]
+
+jobs:
+  ci:
+    name: vs18/${{matrix.arch}}/${{matrix.cfg}}
+    runs-on: windows-2025
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Release}
+          - {gen: Visual Studio 18 2026, arch: Win32, cfg: Debug}
+          - {gen: Visual Studio 18 2026, arch: x64, cfg: Release}
+          - {gen: Visual Studio 18 2026, arch: x64, cfg: Debug}
+    steps:
+      - name: checkout
+        uses: actions/checkout@v7
+      - name: configure
+        run: |
+          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DFASTFLOAT_CXX_STANDARD=14 -DFASTFLOAT_BENCHMARKS=OFF -DFASTFLOAT_TEST=ON -DCMAKE_INSTALL_PREFIX:PATH=destination
+      - name: build
+        run: |
+          cmake --build build --verbose --config ${{matrix.cfg}} --parallel
+      - name: test
+        run: |
+          cd build &&
+          ctest --output-on-failure -C ${{matrix.cfg}}
+      - name: install
+        run: |
+          cd build &&
+          cmake --install .
+      - name: test install (find)
+        run: |
+          cd tests/installation_tests/find  &&
+          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DCMAKE_INSTALL_PREFIX:PATH=../../../build/destination &&
+          cmake --build build --verbose --config ${{matrix.cfg}} --parallel
+      - name: test install (issue 72)
+        run: |
+          cd tests/installation_tests/issue72_installation  &&
+          cmake -S . -B build -G "${{matrix.gen}}" -A ${{matrix.arch}} -DCMAKE_INSTALL_PREFIX:PATH=../../../build/destination &&
+          cmake --build build --verbose --config ${{matrix.cfg}} --parallel