8249612: Remove unused ISNANF and ISNAND from jdk_util_md.h

Reviewed-by: darcy

Author: Alexander Scherbatiy

src/java.base/unix/native/libjava/jdk_util_md.h

@@ -23,24 +23,4 @@
  * questions.
  */
 
-#ifndef JDK_UTIL_MD_H
-#define JDK_UTIL_MD_H
-
-// checking for nanness
-#if defined(MACOSX)
-#include <math.h>
-#define ISNANF(f) isnan(f)
-#define ISNAND(d) isnan(d)
-#elif defined(__linux__) || defined(_ALLBSD_SOURCE)
-#include <math.h>
-#define ISNANF(f) isnanf(f)
-#define ISNAND(d) isnan(d)
-#elif defined(_AIX)
-#include <math.h>
-#define ISNANF(f) _isnanf(f)
-#define ISNAND(d) _isnan(d)
-#else
-#error "missing platform-specific definition here"
-#endif
-
-#endif /* JDK_UTIL_MD_H */
+// Currently, there are no unix specific functions defined.

src/java.base/windows/native/libjava/jdk_util_md.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,11 +28,6 @@
 #define JDK_UTIL_MD_H
 
 #include "jni.h"
-#include <float.h>
-
-// checking for nanness
-#define ISNANF(f) _isnan(f)
-#define ISNAND(d) _isnan(d)
 
 #ifdef __cplusplus
 extern "C" {