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Simplify INFINITY definitions.

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Similar to my patch for HUGE_VAL, this patch eliminates the bits/inf.h
headers and just unconditionally uses the same definitions as the
sysdeps/ieee754 version did (__builtin_inff () for GCC >= 3.3,
otherwise HUGE_VALF), directly in math.h, so removing an unnecessary
level of indirection.

Tested for x86_64.

	* math/math.h [__USE_ISOC99] (INFINITY): Define directly here.  Do
	not include <bits/inf.h>.
	* math/Makefile (headers): Remove bits/inf.h.
	* bits/inf.h: Remove.
	* sysdeps/ieee754/bits/inf.h: Likewise.
This commit is contained in:
Joseph Myers 2017-08-31 16:12:46 +00:00
parent a60eca2e55
commit 5ef1b2138d
5 changed files with 13 additions and 64 deletions
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6
ChangeLog
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@ -1,5 +1,11 @@
2017-08-31 Joseph Myers <joseph@codesourcery.com>
* math/math.h [__USE_ISOC99] (INFINITY): Define directly here. Do
not include <bits/inf.h>.
* math/Makefile (headers): Remove bits/inf.h.
* bits/inf.h: Remove.
* sysdeps/ieee754/bits/inf.h: Likewise.
* math/math.h: Do not include bits/huge_val.h, bits/huge_valf.h,
bits/huge_vall.h or bits/huge_val_flt128.h.
(HUGE_VAL): Define directly here.

32
bits/inf.h
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@ -1,32 +0,0 @@
/* Default `INFINITY' constant.
Copyright (C) 2004-2017 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
<http://www.gnu.org/licenses/>. */
#ifndef _MATH_H
# error "Never use <bits/inf.h> directly; include <math.h> instead."
#endif
/* If we don't have real infinity, then we're supposed to produce a float
value that overflows at translation time, which is required to produce
a diagnostic. GCC's __builtin_inff produces a quite nice diagnostic
that tells the user that the target doesn't support infinities. */
#if __GNUC_PREREQ(3,3)
# define INFINITY (__builtin_inff())
#else
# define INFINITY (1e9999f)
#endif

2
math/Makefile
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@ -23,7 +23,7 @@ include ../Makeconfig
# Installed header files.
headers := math.h bits/mathcalls.h bits/mathinline.h \
bits/inf.h bits/nan.h \
bits/nan.h \
fpu_control.h complex.h bits/cmathcalls.h fenv.h \
bits/fenv.h bits/fenvinline.h bits/mathdef.h tgmath.h \
bits/math-finite.h bits/math-vector.h \

8
math/math.h
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@ -58,8 +58,12 @@ __BEGIN_DECLS
#endif
#ifdef __USE_ISOC99
/* Get machine-dependent INFINITY value. */
# include <bits/inf.h>
/* IEEE positive infinity. */
# if __GNUC_PREREQ (3, 3)
# define INFINITY (__builtin_inff ())
# else
# define INFINITY HUGE_VALF
# endif
/* Get machine-dependent NAN value (returned for some domain errors). */
# include <bits/nan.h>

29
sysdeps/ieee754/bits/inf.h
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@ -1,29 +0,0 @@
/* `INFINITY' constant for IEEE 754 machines.
Copyright (C) 2004-2017 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
<http://www.gnu.org/licenses/>. */
#ifndef _MATH_H
# error "Never use <bits/inf.h> directly; include <math.h> instead."
#endif
/* IEEE positive infinity. */
#if __GNUC_PREREQ(3,3)
# define INFINITY (__builtin_inff())
#else
# define INFINITY HUGE_VALF
#endif