diff options
| -rw-r--r-- | lib/libutil/humanize_number.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/lib/libutil/humanize_number.c b/lib/libutil/humanize_number.c index de98587..75bcb46 100644 --- a/lib/libutil/humanize_number.c +++ b/lib/libutil/humanize_number.c @@ -43,11 +43,11 @@ __FBSDID("$FreeBSD$"); #include <libutil.h> int -humanize_number(char *buf, size_t len, int64_t bytes, +humanize_number(char *buf, size_t len, int64_t quotient, const char *suffix, int scale, int flags) { const char *prefixes, *sep; - int b, i, r, maxscale, s1, s2, sign; + int i, r, remainder, maxscale, s1, s2, sign; int64_t divisor, max; size_t baselen; @@ -55,6 +55,8 @@ humanize_number(char *buf, size_t len, int64_t bytes, assert(suffix != NULL); assert(scale >= 0); + remainder = 0; + if (flags & HN_DIVISOR_1000) { /* SI for decimal multiplies */ divisor = 1000; @@ -86,13 +88,12 @@ humanize_number(char *buf, size_t len, int64_t bytes, if (len > 0) buf[0] = '\0'; - if (bytes < 0) { + if (quotient < 0) { sign = -1; - bytes *= -100; + quotient = -quotient; baselen = 3; /* sign, digit, prefix */ } else { sign = 1; - bytes *= 100; baselen = 2; /* digit, prefix */ } if (flags & HN_NOSPACE) @@ -109,7 +110,7 @@ humanize_number(char *buf, size_t len, int64_t bytes, if (scale & (HN_AUTOSCALE | HN_GETSCALE)) { /* See if there is additional columns can be used. */ - for (max = 100, i = len - baselen; i-- > 0;) + for (max = 1, i = len - baselen; i-- > 0;) max *= 10; /* @@ -117,30 +118,37 @@ humanize_number(char *buf, size_t len, int64_t bytes, * If there will be an overflow by the rounding below, * divide once more. */ - for (i = 0; bytes >= max - 50 && i < maxscale; i++) - bytes /= divisor; + for (i = 0; + (quotient >= max || (quotient == max - 1 && remainder >= 950)) && + i < maxscale; i++) { + remainder = quotient % divisor; + quotient /= divisor; + } if (scale & HN_GETSCALE) return (i); - } else - for (i = 0; i < scale && i < maxscale; i++) - bytes /= divisor; + } else { + for (i = 0; i < scale && i < maxscale; i++) { + remainder = quotient % divisor; + quotient /= divisor; + } + } /* If a value <= 9.9 after rounding and ... */ - if (bytes < 995 && i > 0 && flags & HN_DECIMAL) { + if (quotient <= 9 && remainder < 950 && i > 0 && flags & HN_DECIMAL) { /* baselen + \0 + .N */ if (len < baselen + 1 + 2) return (-1); - b = ((int)bytes + 5) / 10; - s1 = b / 10; - s2 = b % 10; + s1 = (int)quotient + ((remainder + 50) / 1000); + s2 = ((remainder + 50) / 100) % 10; r = snprintf(buf, len, "%d%s%d%s%s%s", sign * s1, localeconv()->decimal_point, s2, sep, SCALE2PREFIX(i), suffix); } else r = snprintf(buf, len, "%" PRId64 "%s%s%s", - sign * ((bytes + 50) / 100), + sign * (quotient + (remainder + 50) / 1000), sep, SCALE2PREFIX(i), suffix); return (r); } + |
