renbaifen的博客

#if 1#include <stdio.h>#include <stdlib.h>struct Student { int num; float score; struct Student* next;};void output(struct Student* head);int main() { struct Student* head = NULL,*prep = NULL; struct Student* node,*tail = NULL; st..

头文件#include <stdlib.h>int NoofRows, NoofCols, i, j,Total_threads,Noofthreads;Noofthreads=atoi(argv[1]);NoofRows=atoi(argv[2]);NoofCols=atoi(argv[3]);这样不用反复修改源文件中的线程数，矩阵规模等变量正常编译，只是执行的时...

clock()函数方法 clock_t time1,time2;time1 = clock(); time2 = clock();double run_time = (double)(time2-time1)/CLOCKS_PER_SEC;printf("runtime = %f\n",run_time); ...

矩阵转置实际上是很简单的，但是数据类型是虚数的时候，编译器会认为实部虚部有数据依赖从而不能自动向量化，通过编译指导#pragma ivdep可以解除这种貌似的数据依赖，但是自动向量化的执行速度应该没有OpenMP快，干脆改成OpenMP并行得了。#include <stdio.h>#include <stdlib.h>#include <omp.h>...

先生成MD5码，再拆分再合并，再验证

#include<time.h>#include<stdio.h>int main(){ struct tm *t; time_t tt; time(&tt); t = localtime(&tt); printf("%4d年%02d月%02d日 %02d:%02d:%02d\n", t->tm_year ...

#include<time.h>#include<stdio.h>int main(){ struct tm *t; time_t tt; time(&tt); t = localtime(&tt); printf("%4d年%02d月%02d日 %02d:%02d:%02d\n", t->tm_year ...

#include <stdio.h>#include <stdlib.h>#include <stdint.h>#include <math.h>#include<iostream>#include "fftw3.h"using namespace std;#pragma comment(lib, "libfftw3-3.l...

cout << setiosflags(ios::fixed) << setprecision(6) <<sum.real << "\t" << sum.imag << endl;#if 1#include <stdio.h>#include <complex.h>#include &l...

#include<stdio.h>#include<mpi.h>#include<stdlib.h>#include<time.h>int main(int argc, char* argv[]){ int myid, numprocs, namelen; char processor_name[MPI_MAX_PROC...

安装gmp时，因为没有超级用户权限不能登录，不能按照：将2进行修改，，使用 ./configure --prefix=/path/to/install 设置安装路径。因为是没有root权限的，所以需要修改安装路径，安装到自己有权限的文件夹下。安装mpc过程中找不到*.la 的问题可以参考这个网站https://www.csdndoc.com/article/6665202?tdsour...

#include <stdio.h>#include <stdlib.h>#include <malloc.h>#include <math.h>#include <string.h>#define m 2#define epsilon pow(10,-5)double norm_1(double *x);doubl...

#if 1#include&lt;cstdio&gt;#include&lt;iostream&gt;using namespace std;void copy_string(char *a,char *b){ int i=0; for(a[0] = a[0],b[0] = b[0];*a!='\0';a++,b++)//for(;*a!='\0';a++,b...

#include &lt;stdlib.h&gt;#include &lt;stdio.h&gt;#include &lt;string.h&gt;void printarr2d(int (*a)[3],int row,int col);int main(){ int i,j; int a[2][3] = {{1,2,3},{4,5,6}}; int b[4][3...

#include&lt;stdio.h&gt;#include&lt;stdlib.h&gt;int main(){ int n = 0; int i = 0; int index = 0; int insert_num = 0; int *pNumber = NULL; int *pNewArray = NULL; int *inse...