Use MSVC intrinsics, instead of Win32 calls.

include/hx/StdLibs.h

@@ -313,7 +313,7 @@ int _hx_atomic_dec(::cpp::Pointer<cpp::AtomicInt> inPtr );
 #define HX_GCC_ATOMICS
 #elif defined(_MSC_VER)
 #define HX_MSVC_ATOMICS
-#include <winnt.h>
+#include <intrin.h>
 #else // Nearly everyone uses GCC, Clang or MSVC, right?
 #error "Neither GCC, clang or MSVC is being used. Please contribute the relevant atomic instrinsics for your compiler."
 #endif
@@ -322,39 +322,39 @@ inline int _hx_atomic_add(int *a, int b) {
 #if defined(HX_GCC_ATOMICS)
   return __atomic_fetch_add(a, b, __ATOMIC_SEQ_CST);
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedExchangeAdd((LONG volatile *)a, b);
+  return _InterlockedExchangeAdd((LONG volatile *)a, b);
 #endif
 }
 
 inline int _hx_atomic_sub(int *a, int b) {
 #if defined(HX_GCC_ATOMICS)
   return __atomic_fetch_sub(a, b, __ATOMIC_SEQ_CST);
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedExchangeAdd((LONG volatile *)a, -b);
+  return _InterlockedExchangeAdd((LONG volatile *)a, -b);
 #endif
 }
 
 inline int _hx_atomic_and(int *a, int b) {
 #if defined(HX_GCC_ATOMICS)
   return __atomic_fetch_and(a, b, __ATOMIC_SEQ_CST);
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedAnd((LONG volatile *)a, b);
+  return _InterlockedAnd((LONG volatile *)a, b);
 #endif
 }
 
 inline int _hx_atomic_or(int *a, int b) {
 #if defined(HX_GCC_ATOMICS)
   return __atomic_fetch_or(a, b, __ATOMIC_SEQ_CST);
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedOr((LONG volatile *)a, b);
+  return _InterlockedOr((LONG volatile *)a, b);
 #endif
 }
 
 inline int _hx_atomic_xor(int *a, int b) {
 #if defined(HX_GCC_ATOMICS)
   return __atomic_fetch_xor(a, b, __ATOMIC_SEQ_CST);
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedXor((LONG volatile *)a, b);
+  return _InterlockedXor((LONG volatile *)a, b);
 #endif
 }
 
@@ -365,7 +365,7 @@ inline int _hx_atomic_compare_exchange(int *a, int expected,
   __atomic_compare_exchange(a, &_expected, &replacement, false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
   return _expected;
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedCompareExchange((LONG volatile *)a, replacement, expected);
+  return _InterlockedCompareExchange((LONG volatile *)a, replacement, expected);
 #endif
 }
 
@@ -375,7 +375,7 @@ inline int _hx_atomic_exchange(int *a, int replacement) {
   __atomic_exchange(a, &replacement, &ret, __ATOMIC_SEQ_CST);
   return ret;
 #elif defined(HX_MSVC_ATOMICS)
-  return InterlockedExchange((LONG volatile *)a, replacement);
+  return _InterlockedExchange((LONG volatile *)a, replacement);
 #endif
 }
 
@@ -385,7 +385,7 @@ inline int _hx_atomic_load(int *a) {
   __atomic_load(a, &ret, __ATOMIC_SEQ_CST);
   return ret;
 #elif defined(HX_MSVC_ATOMICS)
-   return InterlockedXor((LONG volatile *)a, 0);
+   return _InterlockedXor((LONG volatile *)a, 0);
 #endif
 }
 
@@ -394,7 +394,7 @@ inline int _hx_atomic_store(int *a, int value) {
   __atomic_store(a, &value, __ATOMIC_SEQ_CST);
   return value;
 #elif defined(HX_MSVC_ATOMICS)
-   InterlockedExchange((LONG volatile *)a, value);
+   _InterlockedExchange((LONG volatile *)a, value);
    return value;
 #endif
 }