diff --git a/lib/libc/include/math.h b/lib/libc/include/math.h
new file mode 100644
index 0000000..68b4517
--- /dev/null
+++ b/lib/libc/include/math.h
@@ -0,0 +1,14 @@
+#ifndef MATH_H_
+#define MATH_H_
+
+/* IEEE positive infinity.  */
+#ifndef INFINITY
+#define INFINITY (__builtin_inff())
+#endif
+
+/* IEEE Not A Number.  */
+#ifndef NAN
+#define NAN (__builtin_nanf(""))
+#endif
+
+#endif