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| author | Vsevolod Stakhov <vsevolod@highsecure.ru> | 2016-12-10 12:14:45 +0000 |
|---|---|---|
| committer | Vsevolod Stakhov <vsevolod@highsecure.ru> | 2016-12-10 12:28:08 +0000 |
| commit | a32d867f9f22bd5da802e1d808d67a1b99aac075 (patch) | |
| tree | c013b60d932aa23c9b90cd4c5f3292227bd0cc08 | |
| parent | ed436833f401c99e9be28fa82f02c5a2957c31c1 (diff) | |
| download | rspamd-a32d867f9f22bd5da802e1d808d67a1b99aac075.tar.gz rspamd-a32d867f9f22bd5da802e1d808d67a1b99aac075.zip | |
[Minor] Improve int64 -> double conversion
| -rw-r--r-- | src/libutil/util.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/libutil/util.c b/src/libutil/util.c index 3fc1c98bf..36ca0cffc 100644 --- a/src/libutil/util.c +++ b/src/libutil/util.c @@ -2320,15 +2320,13 @@ rspamd_hash_seed (void) } static inline gdouble -rspamd_double_from_int64 (guint64 rnd_int) +rspamd_double_from_int64 (guint64 x) { - double res; - const double transform_bias = 2.2204460492503130808472633361816e-16; - - res = rnd_int >> 12; - res *= transform_bias; + const union { guint i; double d; } u = { + .i = G_GUINT64_CONSTANT(0x3FF) << 52 | x >> 12 + }; - return res; + return u.d - 1.0; } gdouble |