[vte/vte-next] build: Add fallback for round on interix

[Christian Persch <chpe src gnome org>]

commit 30a67d3f8364197ab4563a0203c69bd6d7af8d6a
Author: Markus Duft <mduft gentoo org>
Date:   Thu Mar 8 21:44:14 2012 +0100

    build: Add fallback for round on interix

 configure.in |    2 +-
 src/vte.c    |   10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/configure.in b/configure.in
index 81133bc..23e44e2 100644
--- a/configure.in
+++ b/configure.in
@@ -244,7 +244,7 @@ if test x$have_recvmsg = x1 ; then
 	AC_DEFINE(HAVE_RECVMSG,1,[Define if you have the recvmsg function.])
 fi
 AC_CHECK_FUNC(floor,,AC_CHECK_LIB(m,floor,LIBS=["$LIBS -lm"]))
-AC_CHECK_FUNCS([ceil floor])
+AC_CHECK_FUNCS([ceil floor round])
 
 # Look for tgetent
 
diff --git a/src/vte.c b/src/vte.c
index 7a96499..ce2b035 100644
--- a/src/vte.c
+++ b/src/vte.c
@@ -61,6 +61,16 @@
 #include <locale.h>
 #endif
 
+#ifndef HAVE_ROUND
+static inline double round(double x) {
+	if(x - floor(x) < 0.5) {
+		return floor(x);
+	} else {
+		return ceil(x);
+	}
+}
+#endif
+
 #ifndef HAVE_WINT_T
 typedef gunichar wint_t;
 #endif