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smart_ulltoa5: make available in libbb

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Denis Vlasenko
2006-11-05 00:44:39 +00:00
parent 459e4d6cf7
commit aae0311356
3 changed files with 56 additions and 41 deletions
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36
miscutils/nmeter.c
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@@ -214,42 +214,8 @@ static int rdval_diskstats(const char* p, ullong *vec)
static void scale(ullong ul)
{
char *fmt;
char buf[5];
char c;
unsigned v,idx = 0;
ul *= 10;
if (ul > 9999*10) { // do not scale if 9999 or less
while (ul >= 10000) {
ul /= 1024;
idx++;
}
}
v = ul; // ullong divisions are expensive, avoid them
fmt = " 123456789";
if (!idx) { // 9999 or less: use 1234 format
c = buf[0] = " 123456789"[v/10000];
if (c!=' ') fmt = "0123456789";
c = buf[1] = fmt[v/1000%10];
if (c!=' ') fmt = "0123456789";
buf[2] = fmt[v/100%10];
buf[3] = "0123456789"[v/10%10];
} else {
if (v>=10*10) { // scaled value is >=10: use 123M format
c = buf[0] = " 123456789"[v/1000];
if (c!=' ') fmt = "0123456789";
buf[1] = fmt[v/100%10];
buf[2] = "0123456789"[v/10%10];
} else { // scaled value is <10: use 1.2M format
buf[0] = "0123456789"[v/10];
buf[1] = '.';
buf[2] = "0123456789"[v%10];
}
// see http://en.wikipedia.org/wiki/Tera
buf[3] = " kMGTPEZY"[idx];
}
buf[4] = '\0';
smart_ulltoa5(ul, buf);
put(buf);
}