Daily bump.

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

diff --git a/gcc/real.h b/gcc/real.h
index ea16d0b..ccd0541 100644 (file)
--- a/gcc/real.h
+++ b/gcc/real.h
@@ -68,7 +68,15 @@ Boston, MA 02111-1307, USA.  */
 #ifndef LONG_DOUBLE_TYPE_SIZE
 #define LONG_DOUBLE_TYPE_SIZE 64
 #endif
-#if (LONG_DOUBLE_TYPE_SIZE == 96) || (LONG_DOUBLE_TYPE_SIZE == 128)
+/* MAX_LONG_DOUBLE_TYPE_SIZE is a constant tested by #if.
+   LONG_DOUBLE_TYPE_SIZE can vary at compiler run time.
+   So long as macros like REAL_VALUE_TO_TARGET_LONG_DOUBLE cannot
+   vary too, however, then XFmode and TFmode long double
+   cannot both be supported at the same time.  */
+#ifndef MAX_LONG_DOUBLE_TYPE_SIZE
+#define MAX_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
+#endif
+#if (MAX_LONG_DOUBLE_TYPE_SIZE == 96) || (MAX_LONG_DOUBLE_TYPE_SIZE == 128)
 #ifndef REAL_ARITHMETIC
 #define REAL_ARITHMETIC
 #endif
@@ -78,7 +86,7 @@ Boston, MA 02111-1307, USA.  */
 
 /* Support 80-bit extended real XFmode if LONG_DOUBLE_TYPE_SIZE
    has been defined to be 96 in the tm.h machine file. */
-#if (LONG_DOUBLE_TYPE_SIZE == 96)
+#if (MAX_LONG_DOUBLE_TYPE_SIZE == 96)
 #define REAL_IS_NOT_DOUBLE
 #define REAL_ARITHMETIC
 typedef struct {
@@ -88,7 +96,7 @@ typedef struct {
 
 #else /* no XFmode support */
 
-#if (LONG_DOUBLE_TYPE_SIZE == 128)
+#if (MAX_LONG_DOUBLE_TYPE_SIZE == 128)
 
 #define REAL_IS_NOT_DOUBLE
 #define REAL_ARITHMETIC
@@ -116,7 +124,7 @@ typedef struct {
 #endif /* no TFmode support */
 #endif /* no XFmode support */
 
-extern int significand_size    PARAMS ((enum machine_mode));
+extern unsigned int significand_size   PARAMS ((enum machine_mode));
 
 /* If emulation has been enabled by defining REAL_ARITHMETIC or by
    setting LONG_DOUBLE_TYPE_SIZE to 96 or 128, then define macros so that
@@ -199,7 +207,7 @@ extern REAL_VALUE_TYPE real_value_truncate  PARAMS ((enum machine_mode,
   ereal_from_uint (&d, lo, hi, mode)
 
 /* IN is a REAL_VALUE_TYPE.  OUT is an array of longs. */
-#if LONG_DOUBLE_TYPE_SIZE == 96
+#if MAX_LONG_DOUBLE_TYPE_SIZE == 96
 #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etarldouble ((IN), (OUT)))
 #else
 #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etartdouble ((IN), (OUT)))
@@ -351,7 +359,7 @@ do {                                                                        \
 /* Scale X by Y powers of 2.  */
 #ifndef REAL_VALUE_LDEXP
 #define REAL_VALUE_LDEXP(x, y) ldexp (x, y)
-extern double ldexp ();
+extern double ldexp PARAMS ((double, int));
 #endif
 
 /* Convert the string X to a floating-point value.  */