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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-07-22 10:47:33 (GMT)
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-07-22 10:47:33 (GMT)
commit67cacdb83610889d1153409362cc38448affb4e8 (patch)
treea894254777fedfb7d3c23438796882301c5b3295 /array.c
parentb22352af91b13512301103d8d1b73bc999186225 (diff)
fix sum on infinity
* array.c (rb_ary_sum): consider non-finite floats. [ruby-core:88024] [Bug #14926] * enum.c (sum_iter): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64014 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'array.c')
-rw-r--r--array.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/array.c b/array.c
index 9061919..c9bf765 100644
--- a/array.c
+++ b/array.c
@@ -5973,6 +5973,20 @@ rb_ary_sum(int argc, VALUE *argv, VALUE ary)
else
goto not_float;
+ if (isnan(f)) continue;
+ if (isnan(x)) {
+ f = x;
+ continue;
+ }
+ if (isinf(x)) {
+ if (isinf(f) && signbit(x) != signbit(f))
+ f = NAN;
+ else
+ f = x;
+ continue;
+ }
+ if (isinf(f)) continue;
+
t = f + x;
if (fabs(f) >= fabs(x))
c += ((f - t) + x);