re PR c/30013 (Multiple flaws in decimal floating-point arithmetic conversions fixed)

gcc/
	PR c/30013
	* config/dfp-bit.c: Don't skip TFmode conversions; move strto*
	declarations to top.
	(DFP_TO_BFP): Use for either XFmode or TFmode.
	(BFP_TO_DFP): Use for either XFmode or TFmode; always use cast
	of BFP_VIA_TYPE.
	* config/dfp-bit.h: Include float.h.
	(LONG_DOUBLE_HAS_XF_MODE, LONG_DOUBLE_HAS_TF_MODE): Define if long
	double is one of these modes, rather than using LIBGCC_HAS_*F_MODE
	which doesn't mean the same thing.
	(BFP_KIND): Use 4 to mean TFmode.
	(BFP_FMT): Specify the number of decimal digits based on the
	number of mantissa digits.
	(BFP_VIA_TYPE): Binary float type to use as cast for sprintf.
	(BFP_TO_DFP, DFP_TO_BFP): Define names for TFmode variants.
	(STR_TO_BFP): Use strtold for XFmode or TFmode.
	(TFtype): Define if TFmode is supported.
	* doc/libgcc.texi (Decimal float library routines): Document
	TF conversion functions.

gcc/testsuite/
	* gcc.dg/dfp/convert-bfp.c: Replace SKIP_LONG_DOUBLE with runtime
	checks for size of long double.
	* gcc.dg/dfp/convert.h: New file.
	* gcc.dg/dfp/convert-bfp-2.c: New test.
	* gcc.dg/dfp/convert-bfp-3.c: Ditto.
	* gcc.dg/dfp/convert-bfp-4.c: Ditto.
	* gcc.dg/dfp/convert-bfp-5.c: Ditto.
	* gcc.dg/dfp/convert-bfp-6.c: Ditto.
	* gcc.dg/dfp/convert-bfp-7.c: Ditto.
	* gcc.dg/dfp/convert-bfp-8.c: Ditto.
	* gcc.dg/dfp/convert-bfp-9.c: Ditto.
	* gcc.dg/dfp/convert-bfp-10.c: Ditto.
	* gcc.dg/dfp/convert-bfp-11.c: Ditto.

From-SVN: r128361

1 files changed, 12 insertions, 0 deletions

diff --git a/gcc/doc/libgcc.texi b/gcc/doc/libgcc.texi
index 161cfc6..e977b24 100644
--- a/gcc/doc/libgcc.texi
+++ b/gcc/doc/libgcc.texi
@@ -585,8 +585,12 @@ to another.
 @deftypefnx {Runtime Function} _Decimal32 __bid_truncdfsd (double @var{a})
 @deftypefnx {Runtime Function} _Decimal32 __dpd_truncxfsd ({long double} @var{a})
 @deftypefnx {Runtime Function} _Decimal32 __bid_truncxfsd ({long double} @var{a})
+@deftypefnx {Runtime Function} _Decimal32 __dpd_trunctfsd ({long double} @var{a})
+@deftypefnx {Runtime Function} _Decimal32 __bid_trunctfsd ({long double} @var{a})
 @deftypefnx {Runtime Function} _Decimal64 __dpd_truncxfdd ({long double} @var{a})
 @deftypefnx {Runtime Function} _Decimal64 __bid_truncxfdd ({long double} @var{a})
+@deftypefnx {Runtime Function} _Decimal64 __dpd_trunctfdd ({long double} @var{a})
+@deftypefnx {Runtime Function} _Decimal64 __bid_trunctfdd ({long double} @var{a})
 These functions convert the value of @var{a} from a binary floating type
 to a decimal floating type of a different size.
 @end deftypefn
@@ -605,6 +609,10 @@ to a decimal floating type of a different size.
 @deftypefnx {Runtime Function} {long double} __bid_extendddxf (_Decimal64 @var{a})
 @deftypefnx {Runtime Function} {long double} __dpd_trunctdxf (_Decimal128 @var{a})
 @deftypefnx {Runtime Function} {long double} __bid_trunctdxf (_Decimal128 @var{a})
+@deftypefnx {Runtime Function} {long double} __dpd_extendsdtf (_Decimal32 @var{a})
+@deftypefnx {Runtime Function} {long double} __bid_extendsdtf (_Decimal32 @var{a})
+@deftypefnx {Runtime Function} {long double} __dpd_extendddtf (_Decimal64 @var{a})
+@deftypefnx {Runtime Function} {long double} __bid_extendddtf (_Decimal64 @var{a})
 These functions convert the value of @var{a} from a decimal floating type
 to a binary floating type of a different size.
 @end deftypefn
@@ -613,10 +621,14 @@ to a binary floating type of a different size.
 @deftypefnx {Runtime Function} _Decimal32 __bid_extendsfsd (float @var{a})
 @deftypefnx {Runtime Function} _Decimal64 __dpd_extenddfdd (double @var{a})
 @deftypefnx {Runtime Function} _Decimal64 __bid_extenddfdd (double @var{a})
+@deftypefnx {Runtime Function} _Decimal128 __dpd_extendtftd ({long double} @var{a})
+@deftypefnx {Runtime Function} _Decimal128 __bid_extendtftd ({long double} @var{a})
 @deftypefnx {Runtime Function} float __dpd_truncsdsf (_Decimal32 @var{a})
 @deftypefnx {Runtime Function} float __bid_truncsdsf (_Decimal32 @var{a})
 @deftypefnx {Runtime Function} double __dpd_truncdddf (_Decimal64 @var{a})
 @deftypefnx {Runtime Function} double __bid_truncdddf (_Decimal64 @var{a})
+@deftypefnx {Runtime Function} {long double} __dpd_trunctdtf (_Decimal128 @var{a})
+@deftypefnx {Runtime Function} {long double} __bid_trunctdtf (_Decimal128 @var{a})
 These functions convert the value of @var{a} between decimal and
 binary floating types of the same size.
 @end deftypefn