* config/rs6000/rs6000.c (rs6000_override_options): Default to

[pf3gnuchains/gcc-fork.git] / gcc / doc / extend.texi

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 47eb8a3..1267517 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -1,4 +1,4 @@
-@c Copyright (C) 1988,1989,1992,1993,1994,1996,1998,1999,2000,2001,2002,2003,2004
+@c Copyright (C) 1988,1989,1992,1993,1994,1996,1998,1999,2000,2001,2002,2003,2004,2005
 @c Free Software Foundation, Inc.
 @c This is part of the GCC manual.
 @c For copying conditions, see the file gcc.texi.
@@ -381,8 +381,8 @@ bar (int *array, int offset, int size)
 @end smallexample
 
 Nested function definitions are permitted within functions in the places
-where variable definitions are allowed; that is, in any block, before
-the first statement in the block.
+where variable definitions are allowed; that is, in any block, mixed
+with the other declarations and statements in the block.
 
 It is possible to call the nested function from outside the scope of its
 name by storing its address or passing the address to another function:
@@ -1549,7 +1549,7 @@ useful to override the effects of the @option{-mrtd} switch.
 @cindex @code{const} function attribute
 Many functions do not examine any values except their arguments, and
 have no effects except the return value.  Basically this is just slightly
-more strict class than the @code{pure} attribute above, since function is not
+more strict class than the @code{pure} attribute below, since function is not
 allowed to read global memory.
 
 @cindex pointer arguments
@@ -4507,6 +4507,9 @@ identifier, or a sequence of member accesses and array references.
 @findex __builtin_islessequal
 @findex __builtin_islessgreater
 @findex __builtin_isunordered
+@findex __builtin_powi
+@findex __builtin_powif
+@findex __builtin_powil
 @findex _Exit
 @findex _exit
 @findex abort
@@ -5368,6 +5371,21 @@ Similar to @code{__builtin_parity}, except the argument type is
 @code{unsigned long long}.
 @end deftypefn
 
+@deftypefn {Built-in Function} double __builtin_powi (double, int)
+Returns the first argument raised to the power of the second.  Unlike the
+@code{pow} function no guarantees about precision and rounding are made.
+@end deftypefn
+
+@deftypefn {Built-in Function} float __builtin_powif (float, int)
+Similar to @code{__builtin_powi}, except the argument and return types
+are @code{float}.
+@end deftypefn
+
+@deftypefn {Built-in Function} {long double} __builtin_powil (long double, int)
+Similar to @code{__builtin_powi}, except the argument and return types
+are @code{long double}.
+@end deftypefn
+
 
 @node Target Builtins
 @section Built-in Functions Specific to Particular Target Machines
@@ -9799,6 +9817,16 @@ The use of default arguments in function pointers, function typedefs and
 and other places where they are not permitted by the standard is
 deprecated and will be removed from a future version of G++.
 
+G++ allows floating-point literals to appear in integral constant expressions,
+e.g. @samp{ enum E @{ e = int(2.2 * 3.7) @} }
+This extension is deprecated and will be removed from a future version.
+
+G++ allows static data members of const floating-point type to be declared
+with an initializer in a class definition. The standard only allows
+initializers for static members of const integral types and const
+enumeration types so this extension has been deprecated and will be removed
+from a future version.
+
 @node Backwards Compatibility
 @section Backwards Compatibility
 @cindex Backwards Compatibility