* numeric.c (flo_round): use pow instead of while-loop. fixes #4510

  patched by Alex Young [ruby-core:35526]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31146 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 5 deletions

diff --git a/numeric.c b/numeric.c
index a2fab9b31b..0f316fad93 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1479,17 +1479,14 @@ flo_round(int argc, VALUE *argv, VALUE num)
 {
     VALUE nd;
     double number, f;
-    int ndigits = 0, i;
+    int ndigits = 0;
     long val;
 
     if (argc > 0 && rb_scan_args(argc, argv, "01", &nd) == 1) {
 	ndigits = NUM2INT(nd);
     }
     number  = RFLOAT_VALUE(num);
-    f = 1.0;
-    i = abs(ndigits);
-    while  (--i >= 0)
-	f = f*10.0;
+    f = pow(10, abs(ndigits));
 
     if (isinf(f)) {
 	if (ndigits < 0) number = 0;