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math: Remove __XXX math functions from installed math.h [BZ #32418]

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Since libm doesn't export __XXX math functions, don't declare them in
the installed math.h by adding <bits/mathcalls-macros.h> to declare
__XXX math functions internally for glibc build.  This fixes BZ #32418.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
This commit is contained in:
H.J. Lu 2024-12-05 08:05:04 +08:00
parent 950891b5e7
commit 6bc301672b
5 changed files with 67 additions and 36 deletions
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12
include/bits/mathcalls-macros.h Normal file
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@ -0,0 +1,12 @@
#include <math/bits/mathcalls-macros.h>
/* The file <bits/mathcalls.h> contains the prototypes for all the
actual math functions. These macros are used for those prototypes,
so we can easily declare each function as both `name' and `__name',
and can declare the float versions `namef' and `__namef' for internal
use. */
#undef __MATHDECLX
#define __MATHDECLX(type, function,suffix, args, attrib) \
__MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
__MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)

5
include/math.h
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@ -10,6 +10,11 @@
/* Now define the internal interfaces. */
extern int __signgam;
# undef __MATHDECLX
# define __MATHDECLX(type, function,suffix, args, attrib) \
__MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
__MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)
# if IS_IN (libc) || IS_IN (libm)
hidden_proto (__finite)
hidden_proto (__isinf)

1
math/Makefile
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@ -35,6 +35,7 @@ headers := \
bits/long-double.h \
bits/math-vector.h \
bits/mathcalls-helper-functions.h \
bits/mathcalls-macros.h \
bits/mathcalls-narrow.h \
bits/mathcalls.h \
bits/mathdef.h \

48
math/bits/mathcalls-macros.h Normal file
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@ -0,0 +1,48 @@
/* Macros for math function declarations.
Copyright (C) 2024 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
<https://www.gnu.org/licenses/>. */
#define __SIMD_DECL(function) __CONCAT (__DECL_SIMD_, function)
#define __MATHCALL_VEC(function, suffix, args) \
__SIMD_DECL (__MATH_PRECNAME (function, suffix)) \
__MATHCALL (function, suffix, args)
#define __MATHDECL_VEC(type, function,suffix, args) \
__SIMD_DECL (__MATH_PRECNAME (function, suffix)) \
__MATHDECL(type, function,suffix, args)
#define __MATHCALL(function,suffix, args) \
__MATHDECL (_Mdouble_,function,suffix, args)
#define __MATHDECL(type, function,suffix, args) \
__MATHDECL_1(type, function,suffix, args); \
__MATHDECL_1(type, __CONCAT(__,function),suffix, args)
#define __MATHCALLX(function,suffix, args, attrib) \
__MATHDECLX (_Mdouble_,function,suffix, args, attrib)
#define __MATHDECLX(type, function,suffix, args, attrib) \
__MATHDECL_1(type, function,suffix, args) __attribute__ (attrib);
#define __MATHDECL_1_IMPL(type, function, suffix, args) \
extern type __MATH_PRECNAME(function,suffix) args __THROW
#define __MATHDECL_1(type, function, suffix, args) \
__MATHDECL_1_IMPL(type, function, suffix, args)
/* Ignore the alias by default. The alias is only useful with
redirections. */
#define __MATHDECL_ALIAS(type, function, suffix, args, alias) \
__MATHDECL_1(type, function, suffix, args)
#define __MATHREDIR(type, function, suffix, args, to) \
extern type __REDIRECT_NTH (__MATH_PRECNAME (function, suffix), args, to)

37
math/math.h
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@ -268,42 +268,7 @@ enum
};
#endif
/* The file <bits/mathcalls.h> contains the prototypes for all the
actual math functions. These macros are used for those prototypes,
so we can easily declare each function as both `name' and `__name',
and can declare the float versions `namef' and `__namef'. */
#define __SIMD_DECL(function) __CONCAT (__DECL_SIMD_, function)
#define __MATHCALL_VEC(function, suffix, args) \
__SIMD_DECL (__MATH_PRECNAME (function, suffix)) \
__MATHCALL (function, suffix, args)
#define __MATHDECL_VEC(type, function,suffix, args) \
__SIMD_DECL (__MATH_PRECNAME (function, suffix)) \
__MATHDECL(type, function,suffix, args)
#define __MATHCALL(function,suffix, args) \
__MATHDECL (_Mdouble_,function,suffix, args)
#define __MATHDECL(type, function,suffix, args) \
__MATHDECL_1(type, function,suffix, args); \
__MATHDECL_1(type, __CONCAT(__,function),suffix, args)
#define __MATHCALLX(function,suffix, args, attrib) \
__MATHDECLX (_Mdouble_,function,suffix, args, attrib)
#define __MATHDECLX(type, function,suffix, args, attrib) \
__MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
__MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)
#define __MATHDECL_1_IMPL(type, function, suffix, args) \
extern type __MATH_PRECNAME(function,suffix) args __THROW
#define __MATHDECL_1(type, function, suffix, args) \
__MATHDECL_1_IMPL(type, function, suffix, args)
/* Ignore the alias by default. The alias is only useful with
redirections. */
#define __MATHDECL_ALIAS(type, function, suffix, args, alias) \
__MATHDECL_1(type, function, suffix, args)
#define __MATHREDIR(type, function, suffix, args, to) \
extern type __REDIRECT_NTH (__MATH_PRECNAME (function, suffix), args, to)
#include <bits/mathcalls-macros.h>
#define _Mdouble_ double
#define __MATH_PRECNAME(name,r) __CONCAT(name,r)