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Distinguish SI and Binary Prefixes

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SI prefixes [the decimal prefixes] refer strictly to powers of 10. They
should not be used to indicate powers of 2. e.g., one kilobit
represents 1000 bits instead of 1024 bits. IEC 60027‐2 symbols are
formed adding a "i" to the SI symbol (e.g. G + i = Gi).
This commit is contained in:
Jim Huang 2021-05-30 13:09:02 +08:00
parent e2c095fad2
commit 0f57425f80
5 changed files with 26 additions and 26 deletions
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10
src/stats.c
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@ -135,7 +135,7 @@ static void mi_stats_add(mi_stats_t* stats, const mi_stats_t* src) {
static void mi_printf_amount(int64_t n, int64_t unit, mi_output_fun* out, void* arg, const char* fmt) {
char buf[32];
int len = 32;
const char* suffix = (unit <= 0 ? " " : "b");
const char* suffix = (unit <= 0 ? " " : "B");
const int64_t base = (unit == 0 ? 1000 : 1024);
if (unit>0) n *= unit;
@ -145,13 +145,13 @@ static void mi_printf_amount(int64_t n, int64_t unit, mi_output_fun* out, void*
}
else {
int64_t divider = base;
const char* magnitude = "k";
if (pos >= divider*base) { divider *= base; magnitude = "m"; }
if (pos >= divider*base) { divider *= base; magnitude = "g"; }
const char* magnitude = "K";
if (pos >= divider*base) { divider *= base; magnitude = "M"; }
if (pos >= divider*base) { divider *= base; magnitude = "G"; }
const int64_t tens = (n / (divider/10));
const long whole = (long)(tens/10);
const long frac1 = (long)(tens%10);
snprintf(buf, len, "%ld.%ld %s%s", whole, (frac1 < 0 ? -frac1 : frac1), magnitude, suffix);
snprintf(buf, len, "%ld.%ld %s%s%s", whole, (frac1 < 0 ? -frac1 : frac1), magnitude, (base == 1024 ? "i" : ""), suffix);
}
_mi_fprintf(out, arg, (fmt==NULL ? "%11s" : fmt), buf);
}