C++ 错误 : ‘_mm_sin_ps’ was not declared in this scope

Question

我正在尝试对将函数应用于数组的不同方法进行基准测试。

为什么是https://software.intel.com/sites/landingpage/IntrinsicsGuide/#expand=3260,2124,4779,4779&cats=Trigonometry&text=_sin

_mm_sin_ps 在我的范围内未知，但 _mm_sqrt_ps 是？

我如何让它为人所知？并编译无误。

#include <random>
#include <iostream>
#include <cmath>
#include <chrono>
#include <algorithm>
#include <valarray>
#include "immintrin.h"
#include <array>
int main()
{
    std::cout<<"start\n";
    std::random_device rd;
    std::mt19937 gen(rd());
    std::uniform_real_distribution<> dis(-1000, 1000);
    int N=100;
    while(N--)
    {   
        std::cout<<"\nN: "<<N;

    const int T1=4E6;
      { 
        int T=T1,T0=T1/4;
        std::array<float,T1> array;
        while(T--)
        {
            array[T]=dis(gen);
        }
        auto start_time = std::chrono::high_resolution_clock::now();
        auto it =array.begin();
        while(T0--)
        {
            __m128 X = _mm_loadu_ps(it);
            __m128 result = _mm_sin_ps(X);
            _mm_storeu_ps(it, result);
            it+=4;
        }
        auto time2=std::chrono::high_resolution_clock::now()-start_time;
            std::cout<<"\nintr1: "<<std::chrono::duration_cast<std::chrono::microseconds>(time2).count();
        }
  }
    std::cout<<"\nfin\n";
    return 0;
}

编译器

g++ -v

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu      4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs   --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable- plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu  --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) 

Answer 1

_mm_sin_ps 是 SVML 的一部分库，仅随英特尔编译器一起提供。 GCC 开发人员专注于包装机器指令和简单任务，因此目前 immintrin.h 中没有 SVML。

你必须使用库或自己编写。窦实现:

• Taylor series
• CORDIC
• Quadratic curve