github.com/afumu/libc@v0.0.6/musl/src/legacy/getloadavg.c (about)

     1  #define _GNU_SOURCE
     2  #include <stdlib.h>
     3  #include <sys/sysinfo.h>
     4  
     5  int getloadavg(double *a, int n)
     6  {
     7  	struct sysinfo si;
     8  	if (n <= 0) return n ? -1 : 0;
     9  	sysinfo(&si);
    10  	if (n > 3) n = 3;
    11  	for (int i=0; i<n; i++)
    12  		a[i] = 1.0/(1<<SI_LOAD_SHIFT) * si.loads[i];
    13  	return n;
    14  }