gcc/

	* Makefile.in (USER_H): Remove decfloat.h.
	* ginclude/decfloat.h: Delete, moving contents to ...
	* ginclude/float.h: Add support for decimal floating point,
	guarded by __STDC_WANT_DEC_FP__.

gcc/testsuite/
	* gcc.dg/dfp/dec-eval-method.c: Replace decfloat.h with float.h.
	* gcc.dg/dfp/decfloat-constants.c: Ditto.
	* gcc.dg/dfp/convert-dfp.c: Ditto.
	* gcc.dg/dfp/convert-int-saturate.c: Ditto.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@121308 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 80 insertions, 1 deletions

diff --git a/gcc/ginclude/float.h b/gcc/ginclude/float.h
index 3cdf7c82886..1e16e8884d7 100644
--- a/gcc/ginclude/float.h
+++ b/gcc/ginclude/float.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2007 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -159,4 +159,83 @@ Boston, MA 02110-1301, USA.  */
 #define DECIMAL_DIG	__DECIMAL_DIG__
 
 #endif /* C99 */
+
+#if __STDC_WANT_DEC_FP__ == 1
+/* Draft Technical Report 24732, extension for decimal floating-point
+   arithmetic: Characteristic of decimal floating types <float.h>.  */
+
+/* Number of base-FLT_RADIX digits in the significand, p.  */
+#undef DEC32_MANT_DIG
+#undef DEC64_MANT_DIG
+#undef DEC128_MANT_DIG
+#define DEC32_MANT_DIG	__DEC32_MANT_DIG__
+#define DEC64_MANT_DIG	__DEC64_MANT_DIG__
+#define DEC128_MANT_DIG	__DEC128_MANT_DIG__
+
+/* Minimum exponent. */
+#undef DEC32_MIN_EXP
+#undef DEC64_MIN_EXP
+#undef DEC128_MIN_EXP
+#define DEC32_MIN_EXP	__DEC32_MIN_EXP__
+#define DEC64_MIN_EXP	__DEC64_MIN_EXP__
+#define DEC128_MIN_EXP	__DEC128_MIN_EXP__
+
+/* Maximum exponent. */
+#undef DEC32_MAX_EXP
+#undef DEC64_MAX_EXP
+#undef DEC128_MAX_EXP
+#define DEC32_MAX_EXP	__DEC32_MAX_EXP__
+#define DEC64_MAX_EXP	__DEC64_MAX_EXP__
+#define DEC128_MAX_EXP	__DEC128_MAX_EXP__
+
+/* Maximum representable finite decimal floating-point number
+   (there are 6, 15, and 33 9s after the decimal points respectively). */
+#undef DEC32_MAX
+#undef DEC64_MAX
+#undef DEC128_MAX
+#define DEC32_MAX   __DEC32_MAX__
+#define DEC64_MAX   __DEC64_MAX__
+#define DEC128_MAX  __DEC128_MAX__
+
+/* The difference between 1 and the least value greater than 1 that is
+   representable in the given floating point type. */
+#undef DEC32_EPSILON
+#undef DEC64_EPSILON
+#undef DEC128_EPSILON
+#define DEC32_EPSILON	__DEC32_EPSILON__
+#define DEC64_EPSILON	__DEC64_EPSILON__
+#define DEC128_EPSILON	__DEC128_EPSILON__
+
+/* Minimum normalized positive floating-point number. */
+#undef DEC32_MIN
+#undef DEC64_MIN
+#undef DEC128_MIN
+#define DEC32_MIN	__DEC32_MIN__
+#define DEC64_MIN	__DEC64_MIN__
+#define DEC128_MIN	__DEC128_MIN__
+
+/* Minimum denormalized positive floating-point number. */
+#undef DEC32_DEN
+#undef DEC64_DEN
+#undef DEC128_DEN
+#define DEC32_DEN       __DEC32_DEN__
+#define DEC64_DEN       __DEC64_DEN__
+#define DEC128_DEN      __DEC128_DEN__
+
+/* The floating-point expression evaluation method.
+         -1  indeterminate
+         0  evaluate all operations and constants just to the range and
+            precision of the type
+         1  evaluate operations and constants of type _Decimal32 
+	    and _Decimal64 to the range and precision of the _Decimal64 
+            type, evaluate _Decimal128 operations and constants to the 
+	    range and precision of the _Decimal128 type;
+	 2  evaluate all operations and constants to the range and
+	    precision of the _Decimal128 type.  */
+
+#undef DECFLT_EVAL_METHOD
+#define DECFLT_EVAL_METHOD	__DECFLT_EVAL_METHOD__
+
+#endif /* __STDC_WANT_DEC_FP__ == 1 */
+
 #endif /* _FLOAT_H___ */