micro-utils/libmu/human.c

#include "human.h"

char mu_hs_buf[MU_HUMAN_BUF_SIZE + 1];

char *mu_humansize(off_t n, int block) {
	memset(mu_hs_buf, '\0', sizeof(mu_hs_buf));

	char *postfixes = "BKMGTPE";
	size_t i = 0;
	double size = n;

	while (size > (off_t)block) {
		size /= (off_t)block;
		i++;
	}

	if (i)
		snprintf(mu_hs_buf, sizeof(mu_hs_buf), "%.1f%c", size, postfixes[i]);

	else
		snprintf(mu_hs_buf, sizeof(mu_hs_buf), "%jd", n);

	return mu_hs_buf;
}