add constexpr construct #79

	# This starter workflow is for a CMake project running on multiple platforms. There is a different starter workflow if you just want a single platform.
	# See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-single-platform.yml
	name: cmake ktm wasm test

	on:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	jobs:
	build:
	runs-on: ${{ matrix.os }}

	strategy:
	fail-fast: false

	matrix:
	os: [macos-latest, ubuntu-latest]
	build_type: [Release]
	include:
	- os: macos-latest
	- os: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Setup emsdk
	uses: mymindstorm/setup-emsdk@v14
	with:
	version: "latest"
	actions-cache-folder: 'emsdk-cache'

	- name: Set reusable strings
	id: strings
	shell: bash
	run: \|
	echo $EMSDK
	echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
	echo "build-output-test-dir=${{ github.workspace }}/build/test" >> "$GITHUB_OUTPUT"

	- name: Configure CMake
	run: >
	cmake -B ${{ steps.strings.outputs.build-output-dir }}
	-DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
	-DKTM_BUILD_TESTING=ON
	-DKTM_BUILD_WASM=ON
	-DCMAKE_TOOLCHAIN_FILE="$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
	-S ${{ github.workspace }}

	- name: Build
	run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}

	- name: Test
	working-directory: ${{ steps.strings.outputs.build-output-test-dir }}
	run: ctest --build-config ${{ matrix.build_type }}

	- name: Install
	run: cmake --install ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}

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