C ++错误:未在此范围内声明"_mm_sin_ps" [英] C++ error: ‘_mm_sin_ps’ was not declared in this scope

问题描述

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.

I'm trying to benchmark different ways to apply a function to an array.

为什么 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，但是_mm_sqrt_ps是?

_mm_sin_ps not known to my scope but _mm_sqrt_ps is?

我如何知道它?并毫无错误地进行编译.

how do I make it known? And compile it without errors.

#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) 

推荐答案

_mm_sin_ps是

_mm_sin_ps is part of the SVML library, shipped with intel compilers only. GCC developers focused on wrapping machine instructions and simple tasks, so there's no SVML in immintrin.h so far.

您必须使用一个库或自己编写. 窦的实现:

You have to use a library or write it by yourself. Sinus implementation:

• 泰勒级数
• CORDIC
• 二次曲线

• Taylor series
• CORDIC
• Quadratic curve

这篇关于C ++错误:未在此范围内声明"_mm_sin_ps"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！