toplev.c: Don't include setjmp.h.

	* toplev.c: Don't include setjmp.h.  Kill float_handler_set,
	float_handled, float_handler, float_signal, set_float_handler,
	and do_float_handler.  Set handler for SIGFPE to crash_signal.
	* toplev.h: Don't prototype do_float_handler.

	* c-lex.c: Fold parse_float into lex_number.  Make warning
	about portability of hex float constants more informative, and
	don't issue it on top of a syntax error.
	* fold-const.c: Fold const_binop_1 and fold_convert_1 into
	their callers.
	* real.h: Define REAL_VALUE_ABS here...
	* simplify-rtx.c: ... not here.  Fold check_fold_consts,
	simplify_unary_real, simplify_binary_real, and
	simplify_binary_is2orm1 into their callers.
	* tree.c: Fold build_real_from_int_cst_1 into caller.

	* doc/tm.texi: Document REAL_VALUE_ABS and REAL_VALUE_NEGATIVE.

	* tsystem.h: Include float.h here...
	* libgcc2.c: ... not here.

java:
	* lex.c: Change java_perform_atof to take normal parameters
	instead of a pointer to a parameter block.  Call it directly
	from java_lex.

testsuite:
	* gcc.dg/c90-hexfloat-1.c: Adjust error regexps.

From-SVN: r51336

1 files changed, 8 insertions, 0 deletions

diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index ac44ee3..021d023 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -7829,6 +7829,10 @@ decimal and hexadecimal floating point constants, using the syntax
 defined by the C language for both.
 @end deftypefn
 
+@deftypefn Macro int REAL_VALUE_NEGATIVE (REAL_VALUE_TYPE @var{x})
+Returns 1 if @var{x} is negative (including negative zero), 0 otherwise.  
+@end deftypefn
+
 @deftypefn Macro int REAL_VALUE_ISINF (REAL_VALUE_TYPE @var{x})
 Determines whether @var{x} represents infinity (positive or negative).
 @end deftypefn
@@ -7856,6 +7860,10 @@ target's floating point format cannot represent infinity, it will call
 Returns the negative of the floating point value @var{x}.
 @end deftypefn
 
+@deftypefn Macro REAL_VALUE_TYPE REAL_VALUE_ABS (REAL_VALUE_TYPE @var{x})
+Returns the absolute value of @var{x}.
+@end deftypefn
+
 @deftypefn Macro REAL_VALUE_TYPE REAL_VALUE_TRUNCATE (REAL_VALUE_TYPE @var{mode}, enum machine_mode @var{x})
 Truncates the floating point value @var{x} to fit in @var{mode}.  The
 return value is still a full-size @code{REAL_VALUE_TYPE}, but it has an