From f11e220d2dde732121da05df25f6aeda0c52e3c9 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Tue, 29 Nov 2016 01:45:00 +0000 Subject: Refactor FP_FAST_* into bits/fp-fast.h. Continuing the refactoring of bits/mathdef.h, this patch moves the FP_FAST_* definitions into a new bits/fp-fast.h header. Currently this is only for FP_FAST_FMA*, but in future it would be the appropriate place for the FP_FAST_* macros from TS 18661-1 as well. The generic bits/mathdef.h header defines these macros based on whether the compiler defines __FP_FAST_*. Most architecture-specific headers, however, fail to do so, meaning that if the architecture (or some particular processors) does in fact have fused operations, and GCC knows to use them inline, the FP_FAST_* macros will still not be defined. By refactoring, this patch causes the generic version (based on __FP_FAST_*) to be used in more cases, and so the macro definitions to be more accurate. Architectures that already defined some or all of these macros other than based on the predefines have their own versions of fp-fast.h, which are arranged so they define FP_FAST_* if either the architecture-specific conditions are true or __FP_FAST_* are defined. After this refactoring, various bits/mathdef.h headers for architectures with long double = double are semantically identical to the generic version. The patch removes those headers that are redundant. (In fact two of the four removed were already redundant before this patch because they did use __FP_FAST_*.) Tested for x86_64 and x86, and compilation-only with build-many-glibcs.py. * bits/fp-fast.h: New file. * sysdeps/aarch64/bits/fp-fast.h: Likewise. * sysdeps/powerpc/bits/fp-fast.h: Likewise. * math/Makefile (headers): Add bits/fp-fast.h. * math/math.h: Include . * bits/mathdef.h (FP_FAST_FMA): Remove. (FP_FAST_FMAF): Likewise. (FP_FAST_FMAL): Likewise. * sysdeps/aarch64/bits/mathdef.h (FP_FAST_FMA): Likewise. (FP_FAST_FMAF): Likewise. * sysdeps/powerpc/bits/mathdef.h (FP_FAST_FMA): Likewise. (FP_FAST_FMAF): Likewise. * sysdeps/x86/bits/mathdef.h (FP_FAST_FMA): Likewise. (FP_FAST_FMAF): Likewise. (FP_FAST_FMAL): Likewise. * sysdeps/arm/bits/mathdef.h: Remove file. * sysdeps/hppa/fpu/bits/mathdef.h: Likewise. * sysdeps/sh/sh4/bits/mathdef.h: Likewise. * sysdeps/tile/bits/mathdef.h: Likewise. --- sysdeps/sh/sh4/bits/mathdef.h | 42 ------------------------------------------ 1 file changed, 42 deletions(-) delete mode 100644 sysdeps/sh/sh4/bits/mathdef.h (limited to 'sysdeps/sh') diff --git a/sysdeps/sh/sh4/bits/mathdef.h b/sysdeps/sh/sh4/bits/mathdef.h deleted file mode 100644 index f3ee2879a7..0000000000 --- a/sysdeps/sh/sh4/bits/mathdef.h +++ /dev/null @@ -1,42 +0,0 @@ -/* Copyright (C) 1997-2016 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#if !defined _MATH_H && !defined _COMPLEX_H -# error "Never use directly; include instead" -#endif - - -/* FIXME! This file describes properties of the compiler, not the machine; - it should not be part of libc! - - FIXME! This file does not deal with the -fshort-double option of - gcc! */ - -#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF -# define _MATH_H_MATHDEF 1 - -/* The values returned by `ilogb' for 0 and NaN respectively. */ -# define FP_ILOGB0 (-0x7fffffff) -# define FP_ILOGBNAN 0x7fffffff - -#endif /* ISO C99 */ - -#ifndef __NO_LONG_DOUBLE_MATH -/* Signal that we do not really have a `long double'. The disables the - declaration of all the `long double' function variants. */ -# define __NO_LONG_DOUBLE_MATH 1 -#endif -- cgit 1.4.1