atomicity.h (_Atomic_word): Make it a signed type.

	* config/os/irix/bits/atomicity.h (_Atomic_word): Make it a
	signed type.
	(__exchange_aand_add): Adjust accordingly.
	(__atomic_add): Likewise.

From-SVN: r37209

libstdc++-v3/ChangeLog

+Thu Nov  2 10:11:45 2000  Mark P Mitchell  <mark@codesourcery.com>
+
+	* config/os/irix/bits/atomicity.h (_Atomic_word): Make it a
+	signed type.
+	(__exchange_aand_add): Adjust accordingly.
+	(__atomic_add): Likewise.
+	
 2000-11-02  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>
 
 	* src/locale.cc: Match orderings for static members.

libstdc++-v3/config/os/irix/bits/atomicity.h

@@ -22,21 +22,19 @@
 
 #include <mutex.h>
 
-typedef unsigned long _Atomic_word;
+typedef long _Atomic_word;
 
 static inline _Atomic_word
-__attribute__ ((__unused__))
 __exchange_and_add (_Atomic_word* __mem, int __val)
 {
-  return test_then_add (__mem, __val);
+  return (_Atomic_word) test_then_add ((unsigned long*) __mem, __val);
 }
 
 
 static inline void
-__attribute__ ((unused))
 __atomic_add (_Atomic_word* __mem, int __val)
 {
-  test_then_add (__mem, __val);
+  __exchange_and_add (__mem, __val);
 }
 
 #endif /* atomicity.h */