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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-08-01 07:35:48 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-08-01 07:35:48 +0000 |
commit | 52b59fc9d90e8b06aa1e8df83c5ca63164769bcc (patch) | |
tree | eff1ec9c0436e1ec426b046e770d0e1c065047bf /numeric.c | |
parent | 528ef3ca933b7cbbbd2e7dde8b1863bbed91947c (diff) | |
download | ruby-52b59fc9d90e8b06aa1e8df83c5ca63164769bcc.tar.gz |
numeric.c: 0 % Float::NAN returns Float::NAN
* numeric.c (flodivmod): all results are NaN if divisor is NaN.
[fix GH-692]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47024 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'numeric.c')
-rw-r--r-- | numeric.c | 8 |
1 files changed, 7 insertions, 1 deletions
@@ -890,6 +890,12 @@ flodivmod(double x, double y, double *divp, double *modp) { double div, mod; + if (isnan(y)) { + /* y is NaN so all results are NaN */ + if (modp) *modp = y; + if (divp) *divp = y; + return; + } if (y == 0.0) rb_num_zerodiv(); if ((x == 0.0) || (isinf(y) && !isinf(x))) mod = x; @@ -903,7 +909,7 @@ flodivmod(double x, double y, double *divp, double *modp) mod = x - z * y; #endif } - if (isinf(x) && !isinf(y) && !isnan(y)) + if (isinf(x) && !isinf(y)) div = x; else div = (x - mod) / y; |