diff --git a/inc/math.h b/inc/math.h
index dad2884..964358f 100644
--- a/inc/math.h
+++ b/inc/math.h
@@ -44,6 +44,12 @@
 #endif
 
 
+static inline bool isnan(float x)
+{
+	return x != x;
+}
+
+
 static inline int32_t isinf(float x)
 {
 	if (!isnan(x) && isnan(x - x))
@@ -53,12 +59,6 @@
 }
 
 
-static inline bool isnan(float x)
-{
-	return x != x;
-}
-
-
 static inline float round(float x)
 {
 #ifdef ARM_MATH_CM7