changeset 9723:62d332b0f1ab

Merge
author ctornqvi
date Thu, 10 Dec 2015 21:31:56 +0000
parents e7ee9639a485 b373da0bc248
children 2b4c71d036af
files
diffstat 6 files changed, 174 insertions(+), 305 deletions(-) [+]
line wrap: on
line diff
--- a/src/os/windows/vm/os_windows.cpp	Thu Dec 10 19:59:10 2015 +0000
+++ b/src/os/windows/vm/os_windows.cpp	Thu Dec 10 21:31:56 2015 +0000
@@ -5529,8 +5529,6 @@
   return yes;
 }
 
-#ifndef JDK6_OR_EARLIER
-
 void os::Kernel32Dll::initialize() {
   initializeCommon();
 }
@@ -5705,261 +5703,6 @@
   return agent_entry_name;
 }
 
-#else
-// Kernel32 API
-typedef BOOL (WINAPI* SwitchToThread_Fn)(void);
-typedef HANDLE (WINAPI* CreateToolhelp32Snapshot_Fn)(DWORD, DWORD);
-typedef BOOL (WINAPI* Module32First_Fn)(HANDLE, LPMODULEENTRY32);
-typedef BOOL (WINAPI* Module32Next_Fn)(HANDLE, LPMODULEENTRY32);
-typedef void (WINAPI* GetNativeSystemInfo_Fn)(LPSYSTEM_INFO);
-
-SwitchToThread_Fn           os::Kernel32Dll::_SwitchToThread = NULL;
-CreateToolhelp32Snapshot_Fn os::Kernel32Dll::_CreateToolhelp32Snapshot = NULL;
-Module32First_Fn            os::Kernel32Dll::_Module32First = NULL;
-Module32Next_Fn             os::Kernel32Dll::_Module32Next = NULL;
-GetNativeSystemInfo_Fn      os::Kernel32Dll::_GetNativeSystemInfo = NULL;
-
-void os::Kernel32Dll::initialize() {
-  if (!initialized) {
-    HMODULE handle = ::GetModuleHandle("Kernel32.dll");
-    assert(handle != NULL, "Just check");
-
-    _SwitchToThread = (SwitchToThread_Fn)::GetProcAddress(handle, "SwitchToThread");
-    _CreateToolhelp32Snapshot = (CreateToolhelp32Snapshot_Fn)
-      ::GetProcAddress(handle, "CreateToolhelp32Snapshot");
-    _Module32First = (Module32First_Fn)::GetProcAddress(handle, "Module32First");
-    _Module32Next = (Module32Next_Fn)::GetProcAddress(handle, "Module32Next");
-    _GetNativeSystemInfo = (GetNativeSystemInfo_Fn)::GetProcAddress(handle, "GetNativeSystemInfo");
-    initializeCommon();  // resolve the functions that always need resolving
-
-    initialized = TRUE;
-  }
-}
-
-BOOL os::Kernel32Dll::SwitchToThread() {
-  assert(initialized && _SwitchToThread != NULL,
-         "SwitchToThreadAvailable() not yet called");
-  return _SwitchToThread();
-}
-
-
-BOOL os::Kernel32Dll::SwitchToThreadAvailable() {
-  if (!initialized) {
-    initialize();
-  }
-  return _SwitchToThread != NULL;
-}
-
-// Help tools
-BOOL os::Kernel32Dll::HelpToolsAvailable() {
-  if (!initialized) {
-    initialize();
-  }
-  return _CreateToolhelp32Snapshot != NULL &&
-         _Module32First != NULL &&
-         _Module32Next != NULL;
-}
-
-HANDLE os::Kernel32Dll::CreateToolhelp32Snapshot(DWORD dwFlags,
-                                                 DWORD th32ProcessId) {
-  assert(initialized && _CreateToolhelp32Snapshot != NULL,
-         "HelpToolsAvailable() not yet called");
-
-  return _CreateToolhelp32Snapshot(dwFlags, th32ProcessId);
-}
-
-BOOL os::Kernel32Dll::Module32First(HANDLE hSnapshot,LPMODULEENTRY32 lpme) {
-  assert(initialized && _Module32First != NULL,
-         "HelpToolsAvailable() not yet called");
-
-  return _Module32First(hSnapshot, lpme);
-}
-
-inline BOOL os::Kernel32Dll::Module32Next(HANDLE hSnapshot,
-                                          LPMODULEENTRY32 lpme) {
-  assert(initialized && _Module32Next != NULL,
-         "HelpToolsAvailable() not yet called");
-
-  return _Module32Next(hSnapshot, lpme);
-}
-
-
-BOOL os::Kernel32Dll::GetNativeSystemInfoAvailable() {
-  if (!initialized) {
-    initialize();
-  }
-  return _GetNativeSystemInfo != NULL;
-}
-
-void os::Kernel32Dll::GetNativeSystemInfo(LPSYSTEM_INFO lpSystemInfo) {
-  assert(initialized && _GetNativeSystemInfo != NULL,
-         "GetNativeSystemInfoAvailable() not yet called");
-
-  _GetNativeSystemInfo(lpSystemInfo);
-}
-
-// PSAPI API
-
-
-typedef BOOL (WINAPI *EnumProcessModules_Fn)(HANDLE, HMODULE *, DWORD, LPDWORD);
-typedef BOOL (WINAPI *GetModuleFileNameEx_Fn)(HANDLE, HMODULE, LPTSTR, DWORD);
-typedef BOOL (WINAPI *GetModuleInformation_Fn)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
-
-EnumProcessModules_Fn   os::PSApiDll::_EnumProcessModules = NULL;
-GetModuleFileNameEx_Fn  os::PSApiDll::_GetModuleFileNameEx = NULL;
-GetModuleInformation_Fn os::PSApiDll::_GetModuleInformation = NULL;
-BOOL                    os::PSApiDll::initialized = FALSE;
-
-void os::PSApiDll::initialize() {
-  if (!initialized) {
-    HMODULE handle = os::win32::load_Windows_dll("PSAPI.DLL", NULL, 0);
-    if (handle != NULL) {
-      _EnumProcessModules = (EnumProcessModules_Fn)::GetProcAddress(handle,
-                                                                    "EnumProcessModules");
-      _GetModuleFileNameEx = (GetModuleFileNameEx_Fn)::GetProcAddress(handle,
-                                                                      "GetModuleFileNameExA");
-      _GetModuleInformation = (GetModuleInformation_Fn)::GetProcAddress(handle,
-                                                                        "GetModuleInformation");
-    }
-    initialized = TRUE;
-  }
-}
-
-
-
-BOOL os::PSApiDll::EnumProcessModules(HANDLE hProcess, HMODULE *lpModule,
-                                      DWORD cb, LPDWORD lpcbNeeded) {
-  assert(initialized && _EnumProcessModules != NULL,
-         "PSApiAvailable() not yet called");
-  return _EnumProcessModules(hProcess, lpModule, cb, lpcbNeeded);
-}
-
-DWORD os::PSApiDll::GetModuleFileNameEx(HANDLE hProcess, HMODULE hModule,
-                                        LPTSTR lpFilename, DWORD nSize) {
-  assert(initialized && _GetModuleFileNameEx != NULL,
-         "PSApiAvailable() not yet called");
-  return _GetModuleFileNameEx(hProcess, hModule, lpFilename, nSize);
-}
-
-BOOL os::PSApiDll::GetModuleInformation(HANDLE hProcess, HMODULE hModule,
-                                        LPMODULEINFO lpmodinfo, DWORD cb) {
-  assert(initialized && _GetModuleInformation != NULL,
-         "PSApiAvailable() not yet called");
-  return _GetModuleInformation(hProcess, hModule, lpmodinfo, cb);
-}
-
-BOOL os::PSApiDll::PSApiAvailable() {
-  if (!initialized) {
-    initialize();
-  }
-  return _EnumProcessModules != NULL &&
-    _GetModuleFileNameEx != NULL &&
-    _GetModuleInformation != NULL;
-}
-
-
-// WinSock2 API
-typedef int (PASCAL FAR* WSAStartup_Fn)(WORD, LPWSADATA);
-typedef struct hostent *(PASCAL FAR *gethostbyname_Fn)(...);
-
-WSAStartup_Fn    os::WinSock2Dll::_WSAStartup = NULL;
-gethostbyname_Fn os::WinSock2Dll::_gethostbyname = NULL;
-BOOL             os::WinSock2Dll::initialized = FALSE;
-
-void os::WinSock2Dll::initialize() {
-  if (!initialized) {
-    HMODULE handle = os::win32::load_Windows_dll("ws2_32.dll", NULL, 0);
-    if (handle != NULL) {
-      _WSAStartup = (WSAStartup_Fn)::GetProcAddress(handle, "WSAStartup");
-      _gethostbyname = (gethostbyname_Fn)::GetProcAddress(handle, "gethostbyname");
-    }
-    initialized = TRUE;
-  }
-}
-
-
-BOOL os::WinSock2Dll::WSAStartup(WORD wVersionRequested, LPWSADATA lpWSAData) {
-  assert(initialized && _WSAStartup != NULL,
-         "WinSock2Available() not yet called");
-  return _WSAStartup(wVersionRequested, lpWSAData);
-}
-
-struct hostent* os::WinSock2Dll::gethostbyname(const char *name) {
-  assert(initialized && _gethostbyname != NULL,
-         "WinSock2Available() not yet called");
-  return _gethostbyname(name);
-}
-
-BOOL os::WinSock2Dll::WinSock2Available() {
-  if (!initialized) {
-    initialize();
-  }
-  return _WSAStartup != NULL &&
-    _gethostbyname != NULL;
-}
-
-typedef BOOL (WINAPI *AdjustTokenPrivileges_Fn)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
-typedef BOOL (WINAPI *OpenProcessToken_Fn)(HANDLE, DWORD, PHANDLE);
-typedef BOOL (WINAPI *LookupPrivilegeValue_Fn)(LPCTSTR, LPCTSTR, PLUID);
-
-AdjustTokenPrivileges_Fn os::Advapi32Dll::_AdjustTokenPrivileges = NULL;
-OpenProcessToken_Fn      os::Advapi32Dll::_OpenProcessToken = NULL;
-LookupPrivilegeValue_Fn  os::Advapi32Dll::_LookupPrivilegeValue = NULL;
-BOOL                     os::Advapi32Dll::initialized = FALSE;
-
-void os::Advapi32Dll::initialize() {
-  if (!initialized) {
-    HMODULE handle = os::win32::load_Windows_dll("advapi32.dll", NULL, 0);
-    if (handle != NULL) {
-      _AdjustTokenPrivileges = (AdjustTokenPrivileges_Fn)::GetProcAddress(handle,
-                                                                          "AdjustTokenPrivileges");
-      _OpenProcessToken = (OpenProcessToken_Fn)::GetProcAddress(handle,
-                                                                "OpenProcessToken");
-      _LookupPrivilegeValue = (LookupPrivilegeValue_Fn)::GetProcAddress(handle,
-                                                                        "LookupPrivilegeValueA");
-    }
-    initialized = TRUE;
-  }
-}
-
-BOOL os::Advapi32Dll::AdjustTokenPrivileges(HANDLE TokenHandle,
-                                            BOOL DisableAllPrivileges,
-                                            PTOKEN_PRIVILEGES NewState,
-                                            DWORD BufferLength,
-                                            PTOKEN_PRIVILEGES PreviousState,
-                                            PDWORD ReturnLength) {
-  assert(initialized && _AdjustTokenPrivileges != NULL,
-         "AdvapiAvailable() not yet called");
-  return _AdjustTokenPrivileges(TokenHandle, DisableAllPrivileges, NewState,
-                                BufferLength, PreviousState, ReturnLength);
-}
-
-BOOL os::Advapi32Dll::OpenProcessToken(HANDLE ProcessHandle,
-                                       DWORD DesiredAccess,
-                                       PHANDLE TokenHandle) {
-  assert(initialized && _OpenProcessToken != NULL,
-         "AdvapiAvailable() not yet called");
-  return _OpenProcessToken(ProcessHandle, DesiredAccess, TokenHandle);
-}
-
-BOOL os::Advapi32Dll::LookupPrivilegeValue(LPCTSTR lpSystemName,
-                                           LPCTSTR lpName, PLUID lpLuid) {
-  assert(initialized && _LookupPrivilegeValue != NULL,
-         "AdvapiAvailable() not yet called");
-  return _LookupPrivilegeValue(lpSystemName, lpName, lpLuid);
-}
-
-BOOL os::Advapi32Dll::AdvapiAvailable() {
-  if (!initialized) {
-    initialize();
-  }
-  return _AdjustTokenPrivileges != NULL &&
-    _OpenProcessToken != NULL &&
-    _LookupPrivilegeValue != NULL;
-}
-
-#endif
-
 #ifndef PRODUCT
 
 // test the code path in reserve_memory_special() that tries to allocate memory in a single
--- a/src/os/windows/vm/os_windows.hpp	Thu Dec 10 19:59:10 2015 +0000
+++ b/src/os/windows/vm/os_windows.hpp	Thu Dec 10 21:31:56 2015 +0000
@@ -183,26 +183,11 @@
 
 } ;
 
-// JDK7 requires VS2010
-#if _MSC_VER < 1600
-#define JDK6_OR_EARLIER 1
-#endif
-
-
-
 class WinSock2Dll: AllStatic {
 public:
   static BOOL WSAStartup(WORD, LPWSADATA);
   static struct hostent* gethostbyname(const char *name);
   static BOOL WinSock2Available();
-#ifdef JDK6_OR_EARLIER
-private:
-  static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
-  static struct hostent *(PASCAL FAR *_gethostbyname)(...);
-  static BOOL initialized;
-
-  static void initialize();
-#endif
 };
 
 class Kernel32Dll: AllStatic {
@@ -244,16 +229,6 @@
 
   static void initialize();
   static void initializeCommon();
-
-#ifdef JDK6_OR_EARLIER
-private:
-  static BOOL (WINAPI *_SwitchToThread)(void);
-  static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
-  static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
-  static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
-  static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
-#endif
-
 };
 
 class Advapi32Dll: AllStatic {
@@ -263,16 +238,6 @@
   static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
 
   static BOOL AdvapiAvailable();
-
-#ifdef JDK6_OR_EARLIER
-private:
-  static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
-  static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
-  static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
-  static BOOL initialized;
-
-  static void initialize();
-#endif
 };
 
 class PSApiDll: AllStatic {
@@ -282,16 +247,6 @@
   static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
 
   static BOOL PSApiAvailable();
-
-#ifdef JDK6_OR_EARLIER
-private:
-  static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
-  static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
-  static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
-  static BOOL initialized;
-
-  static void initialize();
-#endif
 };
 
 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os/windows/vm/sharedRuntimeRem.cpp	Thu Dec 10 21:31:56 2015 +0000
@@ -0,0 +1,162 @@
+/*
+* Copyright (c) 2015, 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
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*
+*/
+
+#include "precompiled.hpp"
+
+#ifdef _WIN64
+// These are copied defines from fdlibm.h, this allows us to keep the code
+// the same as in the JDK, for easier maintenance.
+
+#define __HI(x) *(1+(int*)&x)
+#define __LO(x) *(int*)&x
+
+// This code is a copy of __ieee754_fmod() from the JDK's libfdlibm and is
+// used as a workaround for issues with the Windows x64 CRT implementation
+// of fmod. Microsoft has acknowledged that this is an issue in Visual Studio
+// 2012 and forward, but has not provided a time frame for a fix other than that
+// it'll not be fixed in Visual Studio 2013 or 2015.
+
+static const double one = 1.0, Zero[] = { 0.0, -0.0, };
+
+double SharedRuntime::fmod_winx64(double x, double y)
+{
+  int n, hx, hy, hz, ix, iy, sx, i;
+  unsigned lx, ly, lz;
+
+  hx = __HI(x);           /* high word of x */
+  lx = __LO(x);           /* low  word of x */
+  hy = __HI(y);           /* high word of y */
+  ly = __LO(y);           /* low  word of y */
+  sx = hx & 0x80000000;             /* sign of x */
+  hx ^= sx;                /* |x| */
+  hy &= 0x7fffffff;       /* |y| */
+
+#pragma warning( disable : 4146 )
+  /* purge off exception values */
+  if ((hy | ly) == 0 || (hx >= 0x7ff00000) ||       /* y=0,or x not finite */
+    ((hy | ((ly | -ly) >> 31))>0x7ff00000))     /* or y is NaN */
+#pragma warning( default : 4146 )
+    return (x*y) / (x*y);
+  if (hx <= hy) {
+    if ((hx<hy) || (lx<ly)) return x;      /* |x|<|y| return x */
+    if (lx == ly)
+      return Zero[(unsigned)sx >> 31];  /* |x|=|y| return x*0*/
+  }
+
+  /* determine ix = ilogb(x) */
+  if (hx<0x00100000) {     /* subnormal x */
+    if (hx == 0) {
+      for (ix = -1043, i = lx; i>0; i <<= 1) ix -= 1;
+    }
+    else {
+      for (ix = -1022, i = (hx << 11); i>0; i <<= 1) ix -= 1;
+    }
+  }
+  else ix = (hx >> 20) - 1023;
+
+  /* determine iy = ilogb(y) */
+  if (hy<0x00100000) {     /* subnormal y */
+    if (hy == 0) {
+      for (iy = -1043, i = ly; i>0; i <<= 1) iy -= 1;
+    }
+    else {
+      for (iy = -1022, i = (hy << 11); i>0; i <<= 1) iy -= 1;
+    }
+  }
+  else iy = (hy >> 20) - 1023;
+
+  /* set up {hx,lx}, {hy,ly} and align y to x */
+  if (ix >= -1022)
+    hx = 0x00100000 | (0x000fffff & hx);
+  else {          /* subnormal x, shift x to normal */
+    n = -1022 - ix;
+    if (n <= 31) {
+      hx = (hx << n) | (lx >> (32 - n));
+      lx <<= n;
+    }
+    else {
+      hx = lx << (n - 32);
+      lx = 0;
+    }
+  }
+  if (iy >= -1022)
+    hy = 0x00100000 | (0x000fffff & hy);
+  else {          /* subnormal y, shift y to normal */
+    n = -1022 - iy;
+    if (n <= 31) {
+      hy = (hy << n) | (ly >> (32 - n));
+      ly <<= n;
+    }
+    else {
+      hy = ly << (n - 32);
+      ly = 0;
+    }
+  }
+
+  /* fix point fmod */
+  n = ix - iy;
+  while (n--) {
+    hz = hx - hy; lz = lx - ly; if (lx<ly) hz -= 1;
+    if (hz<0){ hx = hx + hx + (lx >> 31); lx = lx + lx; }
+    else {
+      if ((hz | lz) == 0)          /* return sign(x)*0 */
+        return Zero[(unsigned)sx >> 31];
+      hx = hz + hz + (lz >> 31); lx = lz + lz;
+    }
+  }
+  hz = hx - hy; lz = lx - ly; if (lx<ly) hz -= 1;
+  if (hz >= 0) { hx = hz; lx = lz; }
+
+  /* convert back to floating value and restore the sign */
+  if ((hx | lx) == 0)                  /* return sign(x)*0 */
+    return Zero[(unsigned)sx >> 31];
+  while (hx<0x00100000) {          /* normalize x */
+    hx = hx + hx + (lx >> 31); lx = lx + lx;
+    iy -= 1;
+  }
+  if (iy >= -1022) {        /* normalize output */
+    hx = ((hx - 0x00100000) | ((iy + 1023) << 20));
+    __HI(x) = hx | sx;
+    __LO(x) = lx;
+  }
+  else {                /* subnormal output */
+    n = -1022 - iy;
+    if (n <= 20) {
+      lx = (lx >> n) | ((unsigned)hx << (32 - n));
+      hx >>= n;
+    }
+    else if (n <= 31) {
+      lx = (hx << (32 - n)) | (lx >> n); hx = sx;
+    }
+    else {
+      lx = hx >> (n - 32); hx = sx;
+    }
+    __HI(x) = hx | sx;
+    __LO(x) = lx;
+    x *= one;           /* create necessary signal */
+  }
+  return x;               /* exact output */
+}
+
+#endif
--- a/src/share/vm/runtime/sharedRuntime.cpp	Thu Dec 10 19:59:10 2015 +0000
+++ b/src/share/vm/runtime/sharedRuntime.cpp	Thu Dec 10 21:31:56 2015 +0000
@@ -254,8 +254,10 @@
        ((ybits.i & float_sign_mask) == float_infinity) ) {
     return x;
   }
+  return ((jfloat)fmod_winx64((double)x, (double)y));
+#else
+  return ((jfloat)fmod((double)x,(double)y));
 #endif
-  return ((jfloat)fmod((double)x,(double)y));
 JRT_END
 
 
@@ -269,8 +271,10 @@
        ((ybits.l & double_sign_mask) == double_infinity) ) {
     return x;
   }
+  return ((jdouble)fmod_winx64((double)x, (double)y));
+#else
+  return ((jdouble)fmod((double)x,(double)y));
 #endif
-  return ((jdouble)fmod((double)x,(double)y));
 JRT_END
 
 #ifdef __SOFTFP__
--- a/src/share/vm/runtime/sharedRuntime.hpp	Thu Dec 10 19:59:10 2015 +0000
+++ b/src/share/vm/runtime/sharedRuntime.hpp	Thu Dec 10 21:31:56 2015 +0000
@@ -100,6 +100,12 @@
   static jfloat  frem(jfloat  x, jfloat  y);
   static jdouble drem(jdouble x, jdouble y);
 
+
+#ifdef _WIN64
+  // Workaround for fmod issue in the Windows x64 CRT
+  static double fmod_winx64(double x, double y);
+#endif
+
 #ifdef __SOFTFP__
   static jfloat  fadd(jfloat x, jfloat y);
   static jfloat  fsub(jfloat x, jfloat y);
--- a/test/compiler/floatingpoint/ModNaN.java	Thu Dec 10 19:59:10 2015 +0000
+++ b/test/compiler/floatingpoint/ModNaN.java	Thu Dec 10 21:31:56 2015 +0000
@@ -25,7 +25,6 @@
  * @test
  * @bug 8015396
  * @summary double a%b returns NaN for some (a,b) (|a| < inf, |b|>0) (on Core i7 980X)
- * @ignore 8015396
  * @run main ModNaN
  */
 public class ModNaN {