8252250: isnanf is obsolete

Reviewed-by: vkempik
Backport-of: b957d80

Author: Aleksei Voitylov

src/hotspot/share/utilities/globalDefinitions_gcc.hpp

@@ -204,7 +204,7 @@ inline int g_isnan(double f) { return isnand(f); }
 #elif defined(__APPLE__)
 inline int g_isnan(double f) { return isnan(f); }
 #elif defined(LINUX) || defined(_ALLBSD_SOURCE)
-inline int g_isnan(float  f) { return isnanf(f); }
+inline int g_isnan(float  f) { return isnan(f); }
 inline int g_isnan(double f) { return isnan(f); }
 #else
 #error "missing platform-specific definition here"

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

@@ -37,7 +37,7 @@
 #define ISNAND(d) isnan(d)
 #elif defined(__linux__) || defined(_ALLBSD_SOURCE)
 #include <math.h>
-#define ISNANF(f) isnanf(f)
+#define ISNANF(f) isnan(f)
 #define ISNAND(d) isnan(d)
 #elif defined(_AIX)
 #include <math.h>