视点变换，旋转，加速减速，星空背景太阳，光晕各行星纹理#include#include#include#include#include#include#include#pragmacomment(lib,"winmm.lib")#pragmacomment(lib,"wininet")//纹理图像结构typedefstruct{intimgWidth;//纹理宽度intimgHeight;//纹理高度unsignedcharbyteCount;//每个象素对应的字节数，3：24位图，4：带alpha通道的24位图unsignedchar*data;//纹理数据}TEXTUREIMAGE;//BMP文件头#pragmapack(2)typedefstruct{unsignedshortbfType;//文件类型unsignedlongbfSize;//文件大小unsignedshortbfReserved1;//保留位unsignedshortbfReserved2;//保留位unsignedlongbfOffBits;//数据偏移位置}BMPFILEHEADER;#pragmapack()//BMP信息头typedefstruct{unsignedlongbiSize;//此结构大小longbiWidth;//图像宽度longbiHeight;//图像高度unsignedshortbiPlanes;//调色板数量unsignedshortbiBitCount;//每个象素对应的位数，24：24位图，32：带alpha通道的24位图unsignedlongbiCompression;//压缩unsignedlongbiSizeImage;//图像大小longbiXPelsPerMeter;//横向分辨率longbiYPelsPerMeter;//纵向分辨率unsignedlongbiClrUsed;//颜色使用数unsignedlongbiClrImportant;//重要颜色数}BMPINFOHEADER;//定义窗口的标题、宽度、高度、全屏布尔变量#defineWIN_TITLE"模拟太阳系各星球的转动"constintWIN_WIDTH=800;constintWIN_HEIGHT=600;BOOLisFullScreen=FALSE;//初始不为全屏#defineDEG_TO_RAD0.017453floatangle=0.0;staticGLdoubleviewer[]={0,0,0,0,0};//初始化视角GLUquadricObj*quadric;//建立二次曲面对象GLfloatangle_Z;//星空旋转角度boolg_bOrbitOn=true;//控制转动暂停floatg_fSpeedmodifier=1.0f;//时间控制floatg_fElpasedTime;doubleg_dCurrentTime;doubleg_dLastTime;GLfloatLightAmbient[]={1.0f,1.0f,1.0f,0.0f};//环境光参数GLfloatLightDiffuse[]={1.0f,1.0f,1.0f,0.0f};//漫射光参数GLfloatLightPosition[]={0.0f,0.0f,0.0f,1.0f};//光源的位置//纹理图象TEXTUREIMAGEskyImg;TEXTUREIMAGEsunImg;TEXTUREIMAGErayImg;TEXTUREIMAGEmercuImg;TEXTUREIMAGEvenusImg;TEXTUREIMAGEearthImg;TEXTUREIMAGEmarsImg;TEXTUREIMAGEjupiterImg;TEXTUREIMAGEsaturnImg;TEXTUREIMAGEuranusImg;TEXTUREIMAGEneptuneImg;TEXTUREIMAGEmoonImg;GLuinttexture[12];//纹理数组//星球速度定义staticfloatfSunSpin=0.0f;//太阳自转速度staticfloatfMercuSpin=0.0f;//水星自转速度staticfloatfMercuOrbit=0.0f;//水星公转速度staticfloatfVenusSpin=0.0f;//金星自转速度staticfloatfVenusOrbit=0.0f;//金星公转速度staticfloatfEarthSpin=0.0f;//地球自转速度staticfloatfEarthOrbit=0.0f;//地球公转速度staticfloatfMarsSpin=0.0f;//火星自转速度staticfloatfMarsOrbit=0.0f;//火星公转速度staticfloatfJupiterSpin=0.0f;//木星自转速度staticfloatfJupiterOrbit=0.0f;//木星公转速度staticfloatfSaturnSpin=0.0f;//土星自转速度staticfloatfSaturnOrbit=0.0f;//土星公转速度staticfloatfUranusSpin=0.0f;//天王星自转速度staticfloatfUranusOrbit=0.0f;//天王星公转速度staticfloatfNeptuneSpin=0.0f;//海王星自转速度staticfloatfNeptuneOrbit=0.0f;//海王星公转速度staticfloatfMoonSpin=0.0f;//月亮自转速度staticfloatfMoonOrbit=0.0f;//月亮公转速度voidMakeTexture(TEXTUREIMAGEtextureImg,GLuint*texName)//转换为纹理{glPixelStorei(GL_UNPACK_ALIGNMENT,1);//对齐像素字节函数glGenTextures(1,texName);//第一个参数指定表明获取多少个连续的纹理标识符glBindTexture(GL_TEXTURE_2D,*texName);glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,textureImg.imgWidth,textureImg.imgHeight,0,GL_RGB,GL_UNSIGNED_BYTE,textureImg.data);}//初始化OpenGLvoidInitGL(void){glClearColor(0.0f,0.0f,0.0f,0.5f);//设置黑色背景glClearDepth(2.0f);//设置深度缓存glEnable(GL_DEPTH_TEST);//启动深度测试glDepthFunc(GL_LEQUAL);//深度小或相等的时候渲染glShadeModel(GL_SMOOTH);//启动阴影平滑glEnable(GL_CULL_FACE);//开启剔除操作效果glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST);//使用质量最好的模式指定颜色和纹理坐标的插值质量glLightfv(GL_LIGHT1,GL_AMBIENT,LightAmbient);//设置环境光glLightfv(GL_LIGHT1,GL_DIFFUSE,LightDiffuse);//设置漫反射光glEnable(GL_LIGHTING);//打开光照glEnable(GL_LIGHT1);//打开光源1//载入纹理glEnable(GL_TEXTURE_2D);//开启2D纹理映射MakeTexture(skyImg,&texture;[0]);MakeTexture(sunImg,&texture;[1]);MakeTexture(rayImg,&texture;[2]);MakeTexture(mercuImg,&texture;[3]);MakeTexture(venusImg,&texture;[4]);MakeTexture(earthImg,&texture;[5]);MakeTexture(marsImg,&texture;[6]);MakeTexture(jupiterImg,&texture;[7]);MakeTexture(saturnImg,&texture;[8]);MakeTexture(uranusImg,&texture;[9]);MakeTexture(neptuneImg,&texture;[10]);MakeTexture(moonImg,&texture;[11]);quadric=gluNewQuadric();//建立一个曲面对象指针gluQuadricTexture(quadric,GLU_TRUE);//建立纹理坐标gluQuadricDrawStyle(quadric,GLU_FILL);//面填充}voidDisplay(void){glLoadIdentity();//设置观察点的位置和观察的方向gluLookAt(viewer[0],viewer[1],viewer[2],viewer[3],viewer[4],-5,0,1,0);//摄像机x,摄像机y,摄像机z,目标点x,目标点y,目标点z,摄像机顶朝向x,摄像机顶朝向y,摄像机顶朝向z//获得系统时间使太阳系有动态效果g_dCurrentTime=timeGetTime();g_fElpasedTime=(float)((g_dCurrentTime-g_dLastTime)*0.0005);g_dLastTime=g_dCurrentTime;glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);glMatrixMode(GL_MODELVIEW);//指定GL_MODELVIEW是下一个矩阵操作的目标glTranslatef(0.0f,0.0f,-5.0f);//将坐标系移入屏幕5.0fglRotatef(10,1.0f,0.0f,0.0f);//将坐标系绕x轴旋转10度glEnable(GL_LIGHT0);//打开光源0/**********************************绘制背景星空********************************************/glPushMatrix();//当前模型矩阵入栈glTranslatef(-10.0f,3.0f,0.0f);glRotatef(angle_Z,0.0f,0.0f,1.0f);glEnable(GL_TEXTURE_2D);glBindTexture(GL_TEXTURE_2D,texture[0]);//星空纹理glBegin(GL_QUADS);glNormal3f(0.0f,0.0f,1.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(-50.0f,-50.0f,-50.0f);glTexCoord2f(6.0f,0.0f);glVertex3f(50.0f,-50.0f,-50.0f);glTexCoord2f(6.0f,6.0f);glVertex3f(50.0f,50.0f,-50.0f);glTexCoord2f(0.0f,6.0f);glVertex3f(-50.0f,50.0f,-50.0f);glEnd();glBegin(GL_QUADS);glNormal3f(0.0f,0.0f,-1.0f);glTexCoord2f(6.0f,6.0f);glVertex3f(-50.0f,-50.0f,50.0f);glTexCoord2f(0.0f,6.0f);glVertex3f(50.0f,-50.0f,50.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(50.0f,50.0f,50.0f);glTexCoord2f(6.0f,0.0f);glVertex3f(-50.0f,50.0f,50.0f);glEnd();glBegin(GL_QUADS);glNormal3f(0.0f,1.0f,0.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(-50.0f,-50.0f,-50.0f);glTexCoord2f(6.0f,6.0f);glVertex3f(50.0f,-50.0f,50.0f);glTexCoord2f(6.0f,0.0f);glVertex3f(50.0f,-50.0f,-50.0f);glTexCoord2f(0.0f,6.0f);glVertex3f(-50.0f,-50.0f,50.0f);glEnd();glBegin(GL_QUADS);glNormal3f(0.0f,-1.0f,0.0f);glTexCoord2f(6.0f,6.0f);glVertex3f(-50.0f,50.0f,-50.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(50.0f,50.0f,50.0f);glTexCoord2f(0.0f,6.0f);glVertex3f(50.0f,50.0f,-50.0f);glTexCoord2f(6.0f,0.0f);glVertex3f(-50.0f,50.0f,50.0f);glEnd();glBegin(GL_QUADS);glNormal3f(1.0f,0.0f,0.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(-50.0f,-50.0f,-50.0f);glTexCoord2f(6.0f,6.0f);glVertex3f(-50.0f,50.0f,50.0f);glTexCoord2f(0.0f,6.0f);glVertex3f(-50.0f,-50.0f,50.0f);glTexCoord2f(6.0f,0.0f);glVertex3f(-50.0f,50.0f,-50.0f);glEnd();glBegin(GL_QUADS);glNormal3f(-1.0f,0.0f,0.0f);glTexCoord2f(6.0f,6.0f);glVertex3f(50.0f,-50.0f,-50.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(50.0f,50.0f,50.0f);glTexCoord2f(6.0f,0.0f);glVertex3f(50.0f,-50.0f,50.0f);glTexCoord2f(0.0f,6.0f);glVertex3f(50.0f,50.0f,-50.0f);glEnd();glPopMatrix();//当前模型矩阵出栈/**********************************绘制太阳************************************************/glBindTexture(GL_TEXTURE_2D,texture[2]);//光晕纹理glEnable(GL_BLEND);//开启混合glDisable(GL_DEPTH_TEST);//关闭深度测试//绘制太阳光晕glDisable(GL_LIGHTING);//关闭光照glBlendFunc(GL_SRC_ALPHA,GL_ONE);//半透明混合函数glColor4f(1.0f,0.5f,0.0f,0.5f);//设置RGBA值glBegin(GL_QUADS);glNormal3f(0.0f,0.0f,1.0f);glTexCoord2f(0.0f,0.0f);glVertex3f(-1.0f,-1.0f,0.0f);glTexCoord2f(1.0f,0.0f);glVertex3f(1.0f,-1.0f,0.0f);glTexCoord2f(1.0f,1.0f);glVertex3f(1.0f,1.0f,0.0f);glTexCoord2f(0.0f,1.0f);glVertex3f(-1.0f,1.0f,0.0f);glEnd();glDisable(GL_BLEND);//关闭混合glEnable(GL_DEPTH_TEST);glEnable(GL_LIGHTING);//开启光照glLightfv(GL_LIGHT1,GL_POSITION,LightPosition);//设置光源1位置glBindTexture(GL_TEXTURE_2D,texture[1]);//太阳纹理//将坐标系绕Y轴旋转fSunSpin角度,控制太阳自转glRotatef(fSunSpin,0.0,1.0,0.0);gluSphere(quadric,0.3f,32,32);//绘制太阳球体/**********************************绘制水星************************************************/glDisable(GL_LIGHT0);glEnable(GL_TEXTURE_2D);//开启纹理glPushMatrix();//当前模型视图矩阵入栈//将坐标系绕Y轴旋转fMercuOrbit角度,控制水星公转glRotatef(fMercuOrbit,0.0f,1.0f,0.0f);glRotatef(-90.0f,1.0f,0.0f,0.0f);//将坐标系绕X轴旋转-90度glTranslatef(0.5f,0.0f,0.0f);//将坐标系右移0.5fglBindTexture(GL_TEXTURE_2D,texture[3]);//水星纹理//将坐标系绕Z轴旋转fMercuSpin角度控制水星自转glRotatef(fMercuSpin,0.0f,0.0f,1.0f);gluSphere(quadric,0.04f,32,32);//水星球体glPopMatrix();//当前模型视图矩阵出栈//绘制轨道glBegin(GL_LINE_LOOP);for(angle=0;angle=-6.0)viewer[0]-=0.5;break;case'u':case'U':if(viewer[1]=-6.0)viewer[1]-=0.1;break;case'+':case'='://加速,减速,暂停g_fSpeedmodifier+=1.0f;glutPostRedisplay();break;case'':g_bOrbitOn=!g_bOrbitOn;glutPostRedisplay();break;case'-'://按'-'减小运行速度g_fSpeedmodifier-=1.0f;glutPostRedisplay();break;caseVK_ESCAPE://按ESC键时退出exit(0);break;default:break;}}voidspecial_keys(ints_keys,intx,inty){switch(s_keys){caseGLUT_KEY_F1://按F1键时切换窗口/全屏模式if(isFullScreen){glutReshapeWindow(WIN_WIDTH,WIN_HEIGHT);glutPositionWindow(30,30);isFullScreen=FALSE;}else{glutFullScreen();isFullScreen=TRUE;}break;caseGLUT_KEY_RIGHT://视角上下左右旋转if(viewer[3]=-3.0)viewer[3]-=0.1;break;caseGLUT_KEY_UP:if(viewer[4]=-4.5)viewer[4]-=0.1;break;default:break;}}voidmouse(intbtn,intstate,intx,inty)//远近视角{if(btn==GLUT_RIGHT_BUTTON&&state==GLUT_DOWN)viewer[2]+=0.3;if(btn==GLUT_LEFT_BUTTON&&state==GLUT_DOWN&&viewer;[2]＞=-3.9)viewer[2]-=0.3;}voidLoadBmp(char*filename,TEXTUREIMAGE*textureImg)//载入图片{inti,j;FILE*file;BMPFILEHEADERbmpFile;BMPINFOHEADERbmpInfo;intpixel_size;//初始化纹理数据textureImg-＞imgWidth=0;textureImg-＞imgHeight=0;if(textureImg-＞data!=NULL){delete[]textureImg-＞data;}//打开文件file=fopen(filename,"rb");if(file==NULL){return;}//获取文件头rewind(file);fread(&bmpFile;,sizeof(BMPFILEHEADER),1,file);fread(&bmpInfo;,sizeof(BMPINFOHEADER),1,file);//验证文件类型if(bmpFile.bfType!=0x4D42){return;}//获取图像色彩数pixel_size=bmpInfo.biBitCount＞＞3;//读取文件数据textureImg-＞data=newunsignedchar[bmpInfo.biWidth*bmpInfo.biHeight*pixel_size];for(i=0;idata+(i*bmpInfo.biWidth+j)*pixel_size+2,sizeof(unsignedchar),1,file);//绿色分量fread(textureImg-＞data+(i*bmpInfo.biWidth+j)*pixel_size+1,sizeof(unsignedchar),1,file);//蓝色分量fread(textureImg-＞data+(i*bmpInfo.biWidth+j)*pixel_size+0,sizeof(unsignedchar),1,file);//Alpha分量if(pixel_size==4){fread(textureImg-＞data+(i*bmpInfo.biWidth+j)*pixel_size+3,sizeof(unsignedchar),1,file);}}}//记录图像相关参数textureImg-＞imgWidth=bmpInfo.biWidth;textureImg-＞imgHeight=bmpInfo.biHeight;textureImg-＞byteCount=pixel_size;fclose(file);}//程序主函数voidmain(intargc,char**argv){//读图片LoadBmp("Picture//Sky.bmp",&skyImg;);LoadBmp("Picture//Sun.bmp",&sunImg;);LoadBmp("Picture//Ray.bmp",&rayImg;);LoadBmp("Picture//Mercu.bmp",&mercuImg;);LoadBmp("Picture//Venus.bmp",&venusImg;);//金星LoadBmp("Picture//Earth.bmp",&earthImg;);LoadBmp("Picture//Mars.bmp",&marsImg;);//火星LoadBmp("Picture//Jupiter.bmp",&jupiterImg;);//木星LoadBmp("Picture//Saturn.bmp",&saturnImg;);//土星LoadBmp("Picture//Uranus.bmp",&uranusImg;);//天王星LoadBmp("Picture//Neptune.bmp",&neptuneImg;);//海王星LoadBmp("Picture//Moon.bmp",&moonImg;);glutInit(&argc;,argv);//初始化GLUT库glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE|GLUT_DEPTH);//初始化显示模式glutInitWindowSize(WIN_WIDTH,WIN_HEIGHT);//初始化窗口大小glutInitWindowPosition(20,20);//初始化窗口位置GLuintwindow=glutCreateWindow(WIN_TITLE);//建立窗口InitGL();//初始化OpenGLglutDisplayFunc(Display);glutReshapeFunc(Reshape);glutKeyboardFunc(keyboard);glutSpecialFunc(special_keys);glutMouseFunc(mouse);glutIdleFunc(Display);//设置窗口空闲时的处理函数glutMainLoop();//进入事件处理循环}

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boollu(double*a,int*pivot,intn);//矩阵LU分解boolguass(doubleconst*lu,intconst*p,double*b,intn);//求线性代数方程组的解voidqr(double*a,double*d,intn);//矩阵的QR分解boolhouseholder(doubleconst*qr,doubleconst*d,double*b,intn);//求线性代数方程组的解实现两种线性方程组求解的方式，并且结果有误差的比对

8位16进制与浮点double的转换工具

实习时给一个科学计算软件写的小模块，应为是科学计算和工业设计的要求精度高，就使用了统统使用了double类型。
程序的入口是double[]spline(point[]poits,doublexs[])point[]points是给定的插值样本点，double[]xs是要插值的点数组x的坐标。
返回值是插值结果的数组。
point是定义的类，有x,y两个坐标。
存储插值样本点。

js加签一般都没有问题，我就是加签之后上传的问题弄了两个礼拜，最后弄清楚了。
以下是数据上报海关方法，我用的是.net的web方式：1.添加三个引用，见dll文件夹。
2.加载我写的类：两个cs文件（放到web目录下）3.组织上报数据实体格式如下publicclasspayExchangeInfoLists{publicstringorderNo{get;set;}//String订单编号publicListgoodsInfo{get;set;}//List商品信息publicstringrecpAccount{get;set;}//String收款账号publicstringrecpCode{get;set;}//String收款企业代码publicstringrecpName{get;set;}//String收款企业名称}publicclassgoodsInfo{publicstringgname{get;set;}//String商品名称publicstringitemLink{get;set;}//String商品展示链接地址}publicclasspayExchangeInfoHead{publicstringguid{get;set;}//String系统唯一序号publicstringinitalRequest{get;set;}//String原始请求publicstringinitalResponse{get;set;}//String原始响应publicstringebpCode{get;set;}//String电商平台代码publicstringpayCode{get;set;}//String支付企业代码publicstringpayTransactionId{get;set;}//String交易流水号publicdoubletotalAmount{get;set;}//double交易金额publicstringcurrency{get;set;}//String币制publicstringverDept{get;set;}//String验核机构publicstringpayType{get;set;}//String支付类型publicstringtradingTime{get;set;}//String交易成功时间publicstringnote{get;set;}//String备注}publicclasspayExInfoStr{publicstringsessionID{get;set;}//stringYIn海关发起请求时，平台接收的会话ID。
publicpayExchangeInfoHeadpayExchangeInfoHead{get;set;}//StringYIn支付原始数据表头publicListpayExchangeInfoLists{get;set;}//ListYIn支付原始数据表体publicstringserviceTime{get;set;}//LongYIn返回时的系统时间publicstringcertNo{get;set;

mongodb数据库可视化管理工具

用C/C++语言实现如下函数：1. boollu(double*a,int*pivot,intn);矩阵的LU分解。
假设数组anxn在内存中按行优先次序存放。
此函数使用高斯列选主元消去法将其就地进行LU分解。
pivot为输出参数，pivot[0,n)中存放主元的位置排列。
函数成功时返回false，否则返回true。
2. boolguass(doubleconst*lu,intconst*p,double*b,intn);求线代数方程组的解设矩阵Lunxn为某个矩阵anxn的LU分解，在内存中按行优先次序存放。
p[0,n)为LU分解的主元排列。
b为方程组Ax=b的右端向量。
此函数计算方程组Ax=b的解，并将结果存放在数组b[0,n)中。
函数成功时返回false，否则返回true。
3. voidqr(double*a,double*d,intn);矩阵的QR分解假设数组anxn在内存中按行优先次序存放。
此函数使用HouseHolder变换将其就地进行QR分解。
d为输出参数，d[0,n)中存放QR分解的上三角对角线元素。
4. boolhouseholder(doubleconst*qr,doubleconst*d,double*b,intn);求线代数方程组的解设矩阵qrnxn为某个矩阵anxn的QR分解，在内存中按行优先次序存放。
d[0,n)为QR分解的上三角对角线元素。
b为方程组Ax=b的右端向量。
函数计算方程组Ax=b的解，并将结果存放在数组b[0,n)中。
函数成功时返回false，否则返回true。

用OpenGL实现地球仪，包含了纹理、映射、旋转等作用intmain(intargc,char**argv){glutInit(&argc;,argv);glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);glutInitWindowSize(600,600);glutInitWindowPosition(100,100);glutCreateWindow("OpenGL地球——LEILEI");glutDisplayFunc(draw_tellurion);glutIdleFunc(Moving);init();glutMainLoop();return0;}

1.1doublegauss_ch1(double(*f)(double),intn);求积分∫_(-1)^1f(x)dx/√(1-x^2)实现n点Gauss-Chebyeshev积分公式；
返回积分的近似值。
在区间[-1,1]上关于权函数1/√(1-x^2)的正交多项为T_n(x)=cos(narccos(x))，T_n(x)在[-1,1]上的n个根是x_k=cos⁡((2k-1)/2nπ)，k=1,…,n.n点Gauss-Chebyeshev积分公式为∫_(-1)^1f(x)dx/√(1-x^2)≈π/n∑_(k=1)^nf(cos⁡((2k-1)/2nπ))1.2doublegauss_ch2(double(*f)(double),intn);求积分∫_(-1)^1√(1-x^2)f(x)dx实现n点Gauss-ChebyeshevII型积分公式；
返回积分的近似值。
在区间[-1,1]上关于权函数√(1-x^2)的正交多项为U_n(x)=sin⁡((n+1)arccos⁡(x))/sin⁡(arccos⁡(x))，U_n(x)在[-1,1]上的n个根是x_k=cos⁡(kπ/(n+1))，k=1,…,n.n点Gauss-ChebyeshevII型积分公式为∫_(-1)^1√(1-x^2)f(x)dx≈π/(n+1)∑_(k=1)^nsin^2(kπ/(n+1))f(cos⁡(kπ/(n+1)))1.3doublecomp_trep(double(*f)(double),doublea,doubleb);求积分∫_a^bf(x)dx函数实现逐次减半法复化梯形公式；
返回积分的近似值。
1.4doubleromberg(double(*f)(double),doublea,doubleb);求积分∫_a^bf(x)dx函数实现Romberg积分法；
返回积分的近似值。
1.5doublegauss_leg_9(double(*f));求积分∫_(-1)^1f(x)dx实现9点Gauss-Legendre求积公式。
使用上面实现的各种求积方法求下面的积分：∫_(-1)^1e^x√(1-x^2)dx(=∫_(-1)^1(xe^x)/√(1-x^2)dx)使用第3，4，5个函数求积分：∫_0^(π/2)sin⁡xdx(=1)

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