1 files changed, 0 insertions, 32 deletions
diff --git a/missing/isnan.c b/missing/isnan.c
deleted file mode 100644
index ed10bf5cd6..0000000000
--- a/missing/isnan.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* public domain rewrite of isnan(3) */
-
-#include "ruby/missing.h"
-
-/*
- * isnan() may be a macro, a function or both.
- * (The C99 standard defines that isnan() is a macro, though.)
- * http://www.gnu.org/software/automake/manual/autoconf/Function-Portability.html
- *
- * macro only: uClibc
- * both: GNU libc
- *
- * This file is compile if no isnan() function is available.
- * (autoconf AC_REPLACE_FUNCS detects only the function.)
- * The macro is detected by following #ifndef.
- */
-
-#ifndef isnan
-static int double_ne(double n1, double n2);
-
-int
-isnan(double n)
-{
-    return double_ne(n, n);
-}
-
-static int
-double_ne(double n1, double n2)
-{
-    return n1 != n2;
-}
-#endif