iproute2/lib/json_print_math.c
Jay Vosburgh 1ee417ac43 lib: Update backend of print_size to accept 64 bit size
In preparation for accepting 64 bit burst sizes, modify
sprint_size, the formatting function behind print_size, to accept __u64 as
its size parameter.  Also include a "Gb" size category.

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
2025-09-18 02:18:40 +00:00

41 lines
1004 B
C

// SPDX-License-Identifier: GPL-2.0+
#include <stdarg.h>
#include <stdio.h>
#include <math.h>
#include "utils.h"
#include "json_print.h"
char *sprint_size(__u64 sz, char *buf)
{
long kilo = 1024;
long mega = kilo * kilo;
long giga = mega * kilo;
size_t len = SPRINT_BSIZE - 1;
double tmp = sz;
if (sz >= giga && fabs(giga * rint(tmp / giga) - sz) < 1024)
snprintf(buf, len, "%gGb", rint(tmp / giga));
else if (sz >= mega && fabs(mega * rint(tmp / mega) - sz) < 1024)
snprintf(buf, len, "%gMb", rint(tmp / mega));
else if (sz >= kilo && fabs(kilo * rint(tmp / kilo) - sz) < 16)
snprintf(buf, len, "%gKb", rint(tmp / kilo));
else
snprintf(buf, len, "%llub", sz);
return buf;
}
int print_color_size(enum output_type type, enum color_attr color,
const char *key, const char *fmt, __u64 sz)
{
SPRINT_BUF(buf);
if (_IS_JSON_CONTEXT(type))
return print_color_uint(type, color, key, "%u", sz);
sprint_size(sz, buf);
return print_color_string(type, color, key, fmt, buf);
}