commit 5939c09d35de5be4b135bb0ad6dde24700e75fc2 Author: Gisle Vanem gvanem@broadpark.no Date: Wed Aug 24 13:52:44 2011 -0400

lround() missing in MSVC

lround() is missing in MS Visual-C's <math.h>. Not available anywhere. Here is an easy patch. --- changes/msvc_lround | 4 ++++ src/common/util.c | 4 ++++ 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/changes/msvc_lround b/changes/msvc_lround new file mode 100644 index 0000000..e4aea95 --- /dev/null +++ b/changes/msvc_lround @@ -0,0 +1,4 @@ + o Build fixes: + - Provide a substitute implementation of lround() for MSVC, which + apparently lacks it. Patch from Gisle Vanem. + diff --git a/src/common/util.c b/src/common/util.c index b47b9c5..ee0acbb 100644 --- a/src/common/util.c +++ b/src/common/util.c @@ -334,7 +334,11 @@ tor_mathlog(double d) long tor_lround(double d) { +#ifdef _MSC_VER + return (long)(d > 0 ? d + 0.5 : ceil(d - 0.5)); +#else return lround(d); +#endif }

/** Returns floor(log2(u64)). If u64 is 0, (incorrectly) returns 0. */