diff --git a/runtime/compiletime/instr.c b/runtime/compiletime/instr.c
index 74c9e20..d08874b 100644
--- a/runtime/compiletime/instr.c
+++ b/runtime/compiletime/instr.c
@@ -186,6 +186,12 @@ f32_max(float a, float b)
         return a > b ? a : b;
 }
 
+INLINE float
+f32_floor(float a)
+{
+	return floor(a);
+}
+
 INLINE double
 f64_min(double a, double b)
 {
@@ -197,3 +203,11 @@ f64_max(double a, double b)
 {
         return a > b ? a : b;
 }
+
+INLINE double
+f64_floor(double a)
+{
+	return floor(a);
+}
+
+
diff --git a/silverfish b/silverfish
index 015e2bb..6e82f8e 160000
--- a/silverfish
+++ b/silverfish
@@ -1 +1 @@
-Subproject commit 015e2bb638d47a793d0da96bb4b697be9d010209
+Subproject commit 6e82f8ef3621710037428e50d2d118a0589ad720