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authorEric Andersen <andersen@codepoet.org>2001-03-07 03:50:57 +0000
committerEric Andersen <andersen@codepoet.org>2001-03-07 03:50:57 +0000
commit7850f1e2ac9ef6e9c859c86e35e2265f6367ab20 (patch)
treef762883695a956d8b1a5a65f4d20841c789572f1
parent5986f8d1c6aeff1b9eca4fedd2ca4eedcefef884 (diff)
downloadbusybox-7850f1e2ac9ef6e9c859c86e35e2265f6367ab20.tar.gz
Rewrite of format so it behaves itself
-Erik
-rw-r--r--utility.c52
1 files changed, 16 insertions, 36 deletions
diff --git a/utility.c b/utility.c
index 2d27596e0..0da98f13d 100644
--- a/utility.c
+++ b/utility.c
@@ -1797,43 +1797,23 @@ ssize_t safe_read(int fd, void *buf, size_t count)
#ifdef BB_FEATURE_HUMAN_READABLE
const char *format(unsigned long val, unsigned long hr)
{
- static const char strings[] = { '0', 0, 'k', 0, 'M', 0, 'G', 0 };
- static const char fmt[] = "%lu";
- static const char fmt_u[] = "%lu.%lu%s";
-
- static char str[10];
-
- unsigned long frac __attribute__ ((unused)); /* 'may be uninitialized' warning is ok */
- const char *u;
- const char *f;
-
-#if 1
- if(val == 0) { /* This may be omitted to reduce size */
- return strings; /* at the cost of speed. */
- }
-#endif
-
- u = strings;
- f = fmt;
- if (hr) {
- val /= hr;
- } else {
- while ((val >= KILOBYTE) && (*u != 'G')) {
- f = fmt_u;
- u += 2;
- frac = (((val % KILOBYTE) * 10) + (KILOBYTE/2)) / KILOBYTE;
- val /= KILOBYTE;
- if (frac >= 10) { /* We need to round up here. */
- ++val;
- frac = 0;
- }
- }
+ int i=0;
+ static char str[10] = "\0";
+ static const char strings[] = { 'k', 'M', 'G', 'T', 0 };
+ unsigned long divisor = 1;
+
+ if(val == 0)
+ return("0");
+ if(hr)
+ snprintf(str, 9, "%ld", val/hr);
+ else {
+ while(val >= divisor && i <= 4) {
+ divisor=divisor<<10, i++;
+ }
+ divisor=divisor>>10, i--;
+ snprintf(str, 9, "%.1Lf%c", (long double)(val)/divisor, strings[i]);
}
-
- /* If f==fmt then 'frac' and 'u' are ignored and need not be set. */
- snprintf(str, sizeof(str), f, val, frac, u);
-
- return str;
+ return(str);
}
#endif