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, 4 insertions, 0 deletions

diff --git a/gcc/real.h b/gcc/real.h
index 5683bbc..ae9427b 100644
--- a/gcc/real.h
+++ b/gcc/real.h
@@ -161,6 +161,10 @@ extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode,
 
 #define REAL_VALUE_NEGATE ereal_negate
 
+/* Compute the absolute value of a floating-point value X.  */
+#define REAL_VALUE_ABS(x) \
+   (REAL_VALUE_NEGATIVE (x) ? REAL_VALUE_NEGATE (x) : (x))
+
 /* Determine whether a floating-point value X is infinite.  */
 #define REAL_VALUE_ISINF(x) (target_isinf (x))