Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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#include "fmt.h"
size_t fmt_8long(char *dest,unsigned long i) {
register unsigned long len,tmp;
/* first count the number of bytes needed */
for (len=1, tmp=i; tmp>7; ++len) tmp>>=3;
if (dest)
for (tmp=i, dest+=len; ; ) {
*--dest = (char)((tmp&7)+'0');
if (!(tmp>>=3)) break;
return len;
#include <assert.h>
#include <string.h>
int main() {
char buf[100];
assert(fmt_8long(buf,012345)==5 && !memcmp(buf,"12345",5));
assert(fmt_8long(buf,0)==1 && !memcmp(buf,"0",1));
return 0;