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Add CI on GitHub Actions
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‎.github/workflows/build_and_test.yml

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name: "Build & Test"
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on:
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# allow direct trigger
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workflow_dispatch:
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push:
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pull_request:
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concurrency:
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group: ${{ github.workflow }}-${{ github.ref }}
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cancel-in-progress: true
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permissions:
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contents: read
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env:
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GCC_VERSION: "12"
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LLVM_VERSION: "18"
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4.1.1
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with:
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persist-credentials: false
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- name: Install dependencies
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run: |
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sudo apt-get update -y -qq
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sudo apt-get install -y -qq build-essential curl ninja-build debootstrap
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# Needed for some target toolchains like ld
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- name: Install gcc
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run: |
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sudo apt-get install -y -qq gcc-${GCC_VERSION} gcc-${GCC_VERSION}-riscv64-linux-gnu g++-${GCC_VERSION} g++-${GCC_VERSION}-riscv64-linux-gnu
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- name: Install llvm
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run: |
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curl -o llvm.sh https://apt.llvm.org/llvm.sh
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chmod u+x llvm.sh
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sudo ./llvm.sh ${LLVM_VERSION}
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rm llvm.sh
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- name: Setup QEMU
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uses: docker/setup-qemu-action@v3.0.0
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- name: Check sysroot cache
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id: check-sysroot-cache
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uses: actions/cache@v4
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with:
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path: sysroot
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key: sysroot-${{ hashFiles('./.github/workflows/build_and_test.yml') }}
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- name: Create sysroot
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run: |
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sudo debootstrap --arch=riscv64 --verbose --include=fakeroot,symlinks --resolve-deps --variant=minbase --components=main,universe focal sysroot
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# Remove unused files to minimize cache
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sudo chroot sysroot symlinks -cr .
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sudo chown ${USER} -R sysroot
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rm -rf sysroot/{dev,proc,run,sys,var}
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rm -rf sysroot/usr/{sbin,bin,share}
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rm -rf sysroot/usr/lib/{apt,gcc,udev,systemd}
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rm -rf sysroot/usr/libexec/gcc
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if: steps.check-sysroot-cache.outputs.cache-hit != 'true'
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- name: Build
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shell: bash -ex -o pipefail {0}
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run: |
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cmake -S . -B build -GNinja \
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-DCMAKE_INSTALL_PREFIX="$(pwd)/install" \
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-DCMAKE_TOOLCHAIN_FILE=$(pwd)/CMakeToolchain/riscv.clang.cross.cmake \
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-DCMAKE_SYSROOT=$(pwd)/sysroot
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cmake --build build
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cmake --install build
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- name: Upload build artifacts
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uses: actions/upload-artifact@v4
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with:
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name: build
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path: |
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build
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install
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if: always()
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test:
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runs-on: ubuntu-latest
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needs: [build]
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strategy:
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fail-fast: false
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matrix:
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include:
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- qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=128,elen=64,vext_spec=v1.0"
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- qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=256,elen=64,vext_spec=v1.0"
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- qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=512,elen=64,vext_spec=v1.0"
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name: "test (qemu_cpu: \"${{ matrix.qemu_cpu }}\")"
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steps:
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- uses: actions/checkout@v4.1.1
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with:
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persist-credentials: false
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- name: Setup QEMU
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uses: docker/setup-qemu-action@v3.0.0
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- name: Check sysroot cache
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id: check-sysroot-cache
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uses: actions/cache@v4
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with:
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path: sysroot
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key: sysroot-${{ hashFiles('./.github/workflows/build_and_test.yml') }}
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- name: Install dependencies
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run: |
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sudo apt-get update -y -qq
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sudo apt-get install -y -qq libgmp-dev libmpfr-dev
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- name: Download build artifacts
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uses: actions/download-artifact@v4
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with:
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name: build
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- name: Fix build permissions
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run: |
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chmod +x build/test/test_*
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- name: Test
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env:
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CTEST_OUTPUT_ON_FAILURE: "TRUE"
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run: |
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if [[ -n "${{ matrix.qemu_cpu }}" ]]; then
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export QEMU_CPU="${{ matrix.qemu_cpu }}"
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fi
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export QEMU_LD_PREFIX=$(pwd)/sysroot
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cd build
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ctest -j$(nproc)
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- name: Upload test-${{ strategy.job-index }} artifacts
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uses: actions/upload-artifact@v4
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with:
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name: test-${{ strategy.job-index }}
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path: |
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build/Testing
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if: always()

‎.gitignore

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#
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# SPDX-License-Identifier: Apache-2.0
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build*
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build/
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install/
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sysroot/
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compile_commands.json
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LOCAL
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.*

‎CMakeToolchain/riscv.clang.cross.cmake

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#
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# SPDX-License-Identifier: Apache-2.0
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if (RISCV_TOOLCHAIN_INCLUDED)
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return()
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endif()
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set(RISCV_TOOLCHAIN_INCLUDED)
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SET (CMAKE_CROSSCOMPILING TRUE)
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SET (CMAKE_SYSTEM_NAME "Linux")
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SET (CMAKE_SYSTEM_PROCESSOR "riscv64")
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set(CMAKE_SYSTEM_NAME Linux)
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set(CMAKE_SYSTEM_PROCESSOR riscv)
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SET(CMAKE_FIND_ROOT_PATH /usr/riscv64-linux-gnu /usr/include/riscv64-linux-gnu /usr/lib/riscv64-linux-gnu /lib/riscv64-linux-gnu)
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set(CMAKE_C_COMPILER clang)
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set(CMAKE_C_COMPILER_TARGET riscv64-unknown-linux-gnu)
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set(CMAKE_CXX_COMPILER clang++)
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set(CMAKE_CXX_COMPILER_TARGET riscv64-unknown-linux-gnu)
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find_program(CMAKE_C_COMPILER NAMES clang-18 clang)
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set(CMAKE_C_COMPILER_TARGET riscv64-linux-gnu)
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set(CMAKE_C_FLAGS "-march=rv64gcv_zba_zbb_zbs")
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set(RISCV_TOOL_BASE /opt/riscv)
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set(SYSROOT_PATH ${RISCV_TOOL_BASE}/sysroot)
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find_program(CMAKE_CXX_COMPILER NAMES clang++-18 clang++)
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set(CMAKE_CXX_COMPILER_TARGET riscv64-linux-gnu)
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set(CMAKE_CXX_FLAGS "-march=rv64gcv_zba_zbb_zbs")
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set(CMAKE_FIND_ROOT_PATH ${SYSROOT_PATH})
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set(CMAKE_SYSROOT ${SYSROOT_PATH})
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# Find includes and libraries in the target environment
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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# General options to enable cross-compilation
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set(MARCH_OR_CPU -march=rv64gcv)
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set(GCC_TOOLCHAIN --gcc-toolchain=${RISCV_TOOL_BASE})
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set(ISYSTEM -isystem${RISCV_TOOL_BASE}/${CMAKE_C_COMPILER_TARGET}/include/c++/12.1.0/riscv64-unknown-linux-gnu -isystem${RISCV_TOOL_BASE}/${CMAKE_C_COMPILER_TARGET}/include/c++/12.1.0)
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add_compile_options(
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${MARCH_OR_CPU} ${GCC_TOOLCHAIN} ${ISYSTEM}
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)
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add_link_options(
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${MARCH_OR_CPU}
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${GCC_TOOLCHAIN}
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)
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SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
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SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

‎include/rvvlm_erfD.inc.h

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#define F_VER1 RVVLM_ERFDI_STD
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#endif
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#include <fenv.h>
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// T is 2.0
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#define T 0x1.0p+1
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‎include/rvvlm_erfcD.inc.h

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"Must compile for ERFC or CDFNORM when including " __FILE__);
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#endif
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#include <fenv.h>
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#if defined(COMPILE_FOR_ERFC)
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// polynomial coefficients Q62
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#define P_0 0x4f33682d757709e8

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