From: Michael Meissner <meissner@linux.vnet.ibm.com>
To: Joseph Myers <joseph@codesourcery.com>
Cc: Michael Meissner <meissner@linux.vnet.ibm.com>,
GCC Patches <gcc-patches@gcc.gnu.org>,
Segher Boessenkool <segher@kernel.crashing.org>,
David Edelsohn <dje.gcc@gmail.com>,
Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Subject: Re: [PATCH, version 5a], Add support for _Float<N> and _Float<N>X sqrt, fma, fmin, fmax built-in functions
Date: Thu, 26 Oct 2017 00:04:00 -0000 [thread overview]
Message-ID: <20171025235709.GA8932@ibm-tiger.the-meissners.org> (raw)
In-Reply-To: <alpine.DEB.2.20.1710252340120.18935@digraph.polyomino.org.uk>
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On Wed, Oct 25, 2017 at 11:41:24PM +0000, Joseph Myers wrote:
> My only comment on this version is that the documentation in cpp.texi of
> __FP_FAST_* should be updated to mention __FP_FAST_FMAF@var{n} and
> __FP_FAST_FMAF@var{n}X.
Here is the documentation to be added to the previoius patch. With this
change, can I check it into the trunk (once Segher approves of the minor bit to
take out the PowerPC __builtin_{sqrtf128,fmaf128} builtins.
2017-10-25 Michael Meissner <meissner@linux.vnet.ibm.com>
* doc/cpp.texi (Common Predefined Macros): Document defining
__FP_FAST_FMAF<N> and __FP_FAST_FMAF<N>X if the back supports fma
_Float<N> and _Float<N>X variants.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797
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Index: gcc/doc/cpp.texi
===================================================================
--- gcc/doc/cpp.texi (revision 254080)
+++ gcc/doc/cpp.texi (working copy)
@@ -2366,6 +2366,21 @@ the include file @file{math.h} can defin
@code{FP_FAST_FMA}, @code{FP_FAST_FMAF}, and @code{FP_FAST_FMAL}
for compatibility with the 1999 C standard.
+@item __FP_FAST_FMAF16
+@itemx __FP_FAST_FMAF32
+@itemx __FP_FAST_FMAF64
+@itemx __FP_FAST_FMAF128
+@itemx __FP_FAST_FMAF32X
+@itemx __FP_FAST_FMAF64X
+@itemx __FP_FAST_FMAF128X
+These macros are defined with the value 1 if the backend supports the
+@code{fma} functions using the additional @code{_Float@var{n}} and
+@code{_Float@var{n}x} types that are defined in ISO/IEC TS
+18661-3:2015. The include file @file{math.h} can define the
+@code{FP_FAST_FMAF@var{n}} and @code{FP_FAST_FMAF@var{n}x} macros if
+the user defined @code{__STDC_WANT_IEC_60559_TYPES_EXT__} before
+including @file{math.h}.
+
@item __GCC_IEC_559
This macro is defined to indicate the intended level of support for
IEEE 754 (IEC 60559) floating-point arithmetic. It expands to a
next prev parent reply other threads:[~2017-10-25 23:57 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-13 21:46 [PATCH], Add support for __builtin_{sqrt,fma}f128 on PowerPC ISA 3.0 Michael Meissner
2017-09-13 22:49 ` Joseph Myers
2017-09-14 19:02 ` Michael Meissner
2017-10-19 22:15 ` [PATCH, version 2], Add support for _Float<N> and _Float<N>X sqrt, fma, fmin, fmax built-in functions Michael Meissner
2017-10-19 23:00 ` Joseph Myers
2017-10-19 23:00 ` Michael Meissner
2017-10-19 23:08 ` Joseph Myers
2017-10-24 22:40 ` [PATCH, version 3], " Michael Meissner
2017-10-24 23:13 ` Joseph Myers
2017-10-24 23:58 ` Michael Meissner
2017-10-25 19:25 ` [PATCH, version 4], " Michael Meissner
2017-10-25 20:01 ` Michael Meissner
2017-10-25 20:11 ` Joseph Myers
2017-10-25 20:31 ` Michael Meissner
2017-10-25 20:50 ` Joseph Myers
2017-10-25 23:37 ` [PATCH, version 5], " Michael Meissner
2017-10-25 23:56 ` Joseph Myers
2017-10-26 0:04 ` Michael Meissner [this message]
2017-10-26 0:17 ` [PATCH, version 5a], " Michael Meissner
2017-10-30 16:29 ` Joseph Myers
2017-10-30 18:05 ` Michael Meissner
2017-10-30 18:38 ` Joseph Myers
2017-10-30 23:06 ` Michael Meissner
2017-10-30 23:29 ` Michael Meissner
2017-10-30 23:35 ` Joseph Myers
2017-10-30 23:48 ` Michael Meissner
2017-10-31 18:04 ` Michael Meissner
2017-10-31 18:26 ` Joseph Myers
2017-10-27 2:27 ` Segher Boessenkool
2017-09-14 14:54 ` [PATCH], Add support for __builtin_{sqrt,fma}f128 on PowerPC ISA 3.0 Segher Boessenkool
2017-09-14 22:21 ` Michael Meissner
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