From 0ac4b0f99d12a76f07f24d747a77f2bc07e481e3 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Tue, 30 Aug 2011 22:22:15 -0400
Subject: Check for lround with autoconf; fall back to rint.

---
 src/common/util.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'src/common')

diff --git a/src/common/util.c b/src/common/util.c
index ee0acbbb07..de1ca3684d 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -334,10 +334,12 @@ tor_mathlog(double d)
 long
 tor_lround(double d)
 {
-#ifdef _MSC_VER
-  return (long)(d > 0 ? d + 0.5 : ceil(d - 0.5));
-#else
+#if defined(HAVE_LROUND)
   return lround(d);
+#elif defined(HAVE_RINT)
+  return (long)rint(d);
+#else
+  return (long)(d > 0 ? d + 0.5 : ceil(d - 0.5));
 #endif
 }
 
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