re PR target/54686 (std::abs (long long) resorts to std::abs (double) if llabs is absent)

2012-10-05  Marc Glisse  <marc.glisse@inria.fr>

	PR libstdc++/54686
	* include/c_global/cstdlib (abs(long long)): Define with
	__builtin_llabs when we have long long.
	(abs(long)): Use __builtin_labs.
	(abs(__int128)): Define when we have __int128.

From-SVN: r192138

libstdc++-v3/ChangeLog

+2012-10-05  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR libstdc++/54686
+	* include/c_global/cstdlib (abs(long long)): Define with
+	__builtin_llabs when we have long long.
+	(abs(long)): Use __builtin_labs.
+	(abs(__int128)): Define when we have __int128.
+
 2012-10-05  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/c_global/cstdlib: Remove redundant pasto code protected

libstdc++-v3/include/c_global/cstdlib

@@ -135,12 +135,22 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 #ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
   inline long
-  abs(long __i) { return labs(__i); }
+  abs(long __i) { return __builtin_labs(__i); }
 
   inline ldiv_t
   div(long __i, long __j) { return ldiv(__i, __j); }
 #endif
 
+#ifdef _GLIBCXX_USE_LONG_LONG
+  inline long long
+  abs(long long __x) { return __builtin_llabs (__x); }
+#endif
+
+#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128)
+  inline __int128
+  abs(__int128 __x) { return __x >= 0 ? __x : -__x; }
+#endif
+
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace
 
@@ -169,9 +179,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   using ::_Exit;
 #endif
 
-  inline long long
-  abs(long long __x) { return __x >= 0 ? __x : -__x; }
-
 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
   using ::llabs;
 
@@ -206,7 +213,6 @@ namespace std
   using ::__gnu_cxx::lldiv_t;
 #endif
   using ::__gnu_cxx::_Exit;
-  using ::__gnu_cxx::abs;
 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
   using ::__gnu_cxx::llabs;
   using ::__gnu_cxx::div;