sbase

suckless unix tools
git clone git://git.suckless.org/sbase
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human.c (476B)

      1 /* See LICENSE file for copyright and license details. */
      2 #include <stdio.h>
      3 #include <string.h>
      4 #include <stdint.h>
      5 
      6 #include "../util.h"
      7 
      8 char *
      9 humansize(off_t n)
     10 {
     11 	static char buf[16];
     12 	const char postfixes[] = "BKMGTPE";
     13 	double size;
     14 	int i;
     15 
     16 	for (size = n, i = 0; size >= 1024 && i < strlen(postfixes); i++)
     17 		size /= 1024;
     18 
     19 	if (!i)
     20 		snprintf(buf, sizeof(buf), "%ju", (uintmax_t)n);
     21 	else
     22 		snprintf(buf, sizeof(buf), "%.1f%c", size, postfixes[i]);
     23 
     24 	return buf;
     25 }