1 files changed, 3 insertions, 0 deletions

diff --git a/_math.h b/_math.h
new file mode 100644
index 0000000..8183947
--- /dev/null
+++ b/_math.h
@@ -0,0 +1,3 @@
+#ifndef HUGE_VAL
+#error HUGE_VAL not defined
+#endif