1 files changed, 8 insertions, 1 deletions
diff --git a/src/platform-posix.cc b/src/platform-posix.cc
index 1e1245c5..41e0e64f 100644
--- a/src/platform-posix.cc
+++ b/src/platform-posix.cc
@@ -27,7 +27,7 @@
 
 // Platform specific code for POSIX goes here. This is not a platform on its
 // own but contains the parts which are the same across POSIX platforms Linux,
-// Mac OS and FreeBSD.
+// Mac OS, FreeBSD and OpenBSD.
 
 #include <unistd.h>
 #include <errno.h>
@@ -61,6 +61,13 @@ double modulo(double x, double y) {
   return fmod(x, y);
 }
 
+
+double OS::nan_value() {
+  // NAN from math.h is defined in C99 and not in POSIX.
+  return NAN;
+}
+
+
 // ----------------------------------------------------------------------------
 // POSIX date/time support.
 //