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| author | Taylor Yu <catalyst@torproject.org> | 2017-04-05 14:52:48 -0400 |
|---|---|---|
| committer | Taylor Yu <catalyst@torproject.org> | 2017-04-06 13:54:46 -0400 |
| commit | c5adab025852c68bc637c4fbfa34c44cde7397bb (patch) | |
| tree | 7aa686bc3652cf757c282eb71f701271a97f02fd /src/common/util.h | |
| parent | 489ef6b38ba66f59bb6562a4702c0500478a7495 (diff) | |
| download | tor-c5adab025852c68bc637c4fbfa34c44cde7397bb.tar.gz tor-c5adab025852c68bc637c4fbfa34c44cde7397bb.zip | |
Make CEIL_DIV() slightly more overflow-safe
Diffstat (limited to 'src/common/util.h')
| -rw-r--r-- | src/common/util.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/common/util.h b/src/common/util.h index cfe47f07f2..18eb57f1bc 100644 --- a/src/common/util.h +++ b/src/common/util.h @@ -163,9 +163,9 @@ int64_t clamp_double_to_int64(double number); void simplify_fraction64(uint64_t *numer, uint64_t *denom); /* Compute the CEIL of <b>a</b> divided by <b>b</b>, for nonnegative <b>a</b> - * and positive <b>b</b>. Works on integer types only. Not defined if a+b can - * overflow. */ -#define CEIL_DIV(a,b) (((a)+(b)-1)/(b)) + * and positive <b>b</b>. Works on integer types only. Not defined if a+(b-1) + * can overflow. */ +#define CEIL_DIV(a,b) (((a)+((b)-1))/(b)) /* Return <b>v</b> if it's between <b>min</b> and <b>max</b>. Otherwise * return <b>min</b> if <b>v</b> is smaller than <b>min</b>, or <b>max</b> if |