PR tree-optimization/16688

[pf3gnuchains/gcc-fork.git] / gcc / real.h

diff --git a/gcc/real.h b/gcc/real.h
index 3620d50..c477be1 100644 (file)
--- a/gcc/real.h
+++ b/gcc/real.h
@@ -1,6 +1,6 @@
 /* Definitions of floating-point access for GNU compiler.
    Copyright (C) 1989, 1991, 1994, 1996, 1997, 1998, 1999,
-   2000, 2002, 2003 Free Software Foundation, Inc.
+   2000, 2002, 2003, 2004 Free Software Foundation, Inc.
 
    This file is part of GCC.
 
@@ -42,14 +42,23 @@ enum real_value_class {
 
 struct real_value GTY(())
 {
-  ENUM_BITFIELD (real_value_class) class : 2;
+  /* Use the same underlying type for all bit-fields, so as to make
+     sure they're packed together, otherwise REAL_VALUE_TYPE_SIZE will
+     be miscomputed.  */
+  unsigned int /* ENUM_BITFIELD (real_value_class) */ cl : 2;
   unsigned int sign : 1;
   unsigned int signalling : 1;
   unsigned int canonical : 1;
-  signed int exp : EXP_BITS;
+  unsigned int uexp : EXP_BITS;
   unsigned long sig[SIGSZ];
 };
 
+#define REAL_EXP(REAL) \
+  ((int)((REAL)->uexp ^ (unsigned int)(1 << (EXP_BITS - 1))) \
+   - (1 << (EXP_BITS - 1)))
+#define SET_REAL_EXP(REAL, EXP) \
+  ((REAL)->uexp = ((unsigned int)(EXP) & (unsigned int)((1 << EXP_BITS) - 1)))
+
 /* Various headers condition prototypes on #ifdef REAL_VALUE_TYPE, so it
    needs to be a macro.  We do need to continue to have a structure tag
    so that other headers can forward declare it.  */
@@ -372,5 +381,10 @@ extern void real_floor (REAL_VALUE_TYPE *, enum machine_mode,
                        const REAL_VALUE_TYPE *);
 extern void real_ceil (REAL_VALUE_TYPE *, enum machine_mode,
                       const REAL_VALUE_TYPE *);
+extern void real_round (REAL_VALUE_TYPE *, enum machine_mode,
+                       const REAL_VALUE_TYPE *);
+
+/* Set the sign of R to the sign of X.  */
+extern void real_copysign (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
 
 #endif /* ! GCC_REAL_H */