* numeric.c (flodivmod): work around for inifinity.

* numeric.c (flo_divmod): work around for platforms have no round().
  [ruby-dev:32247]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@13907 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 1 deletions

diff --git a/numeric.c b/numeric.c
index d9466daa9..ddd30e46a 100644
--- a/numeric.c
+++ b/numeric.c
@@ -644,7 +644,10 @@ flodivmod(double x, double y, double *divp, double *modp)
 	mod = x - z * y;
     }
 #endif
-    div = (x - mod) / y;
+    if (isinf(x) && !isinf(y) && !isnan(y))
+	div = x;
+    else
+	div = (x - mod) / y;
     if (y*mod < 0) {
 	mod += y;
 	div -= 1.0;
@@ -715,9 +718,16 @@ flo_divmod(VALUE x, VALUE y)
     }
     flodivmod(RFLOAT(x)->value, fy, &div, &mod);
     if (FIXABLE(div)) {
+#ifdef HVAE_ROUND
 	val = round(div);
+#else
+	val = (div < 0) ? ceil(x - 0.5) : floor(x + 0.5);
+#endif
 	a = LONG2FIX(val);
     }
+    else if (isnan(div) || isinf(div)) {
+	a = rb_float_new(div);
+    }
     else {
 	a = rb_dbl2big(div);
     }