llvmpipe: Implement round() for MSVC.

src/gallium/drivers/llvmpipe/lp_test_main.c

@@ -40,6 +40,18 @@
 #include "lp_test.h"
 
 
+#ifdef PIPE_CC_MSVC
+static INLINE double
+round(double x)
+{
+   if (x >= 0.0)
+      return floor(x + 0.5);
+   else
+      return ceil(x - 0.5);
+}
+#endif
+
+
 void
 dump_type(FILE *fp,
           struct lp_type type)