/*
 * test.c
 * Copyright (C) 2021 light <light@lightdeMBP>
 *
 * Distributed under terms of the MIT license.
 */

#include "./include/test.h"
#include<stdio.h>
#define MAX_LINE 1024

double get_sqrt(double var1)
{
    return sqrt(var1);
}

void updateMem(unsigned int *all, unsigned int *fre, float *useage) {
    char buf[MAX_LINE];  /*缓冲区*/
    FILE *fp;            /*文件指针*/
    if((fp = fopen("./meminfo","r")) == NULL)
    {
        perror("fail to read");
        return;
    }
    fgets(buf,MAX_LINE,fp);
    sscanf(buf, "%*s %u kB",all);
    fgets(buf,MAX_LINE,fp);
    sscanf(buf, "%*s %u kB",fre);
    *useage = 1 - (float) *fre / *all;
}