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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-03-05 01:46:20 (GMT)
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-03-05 01:46:20 (GMT)
commit01fb6694238ba905a08b9331430d234da054cc63 (patch)
treea4cf53c0c76da949b83523ce16b510f9d09f02d2 /math.c
parent3ca1cbecc6a22270ca23c4d87d0e15a37c0e8170 (diff)
math.c: more accuracy
* math.c (math_log10): calculate log10(2) for more accuracy. [ruby-core:79907] [Bug #13279] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57779 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'math.c')
-rw-r--r--math.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/math.c b/math.c
index 74dff9e..523937e 100644
--- a/math.c
+++ b/math.c
@@ -563,7 +563,7 @@ math_log10(VALUE unused_obj, VALUE x)
/* check for pole error */
if (d == 0.0) return DBL2NUM(-INFINITY);
- return DBL2NUM(log10(d) + numbits * M_LN2/M_LN10); /* log10(d * 2 ** numbits) */
+ return DBL2NUM(log10(d) + numbits * log10(2)); /* log10(d * 2 ** numbits) */
}
/*