mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-20 00:19:57 +00:00
eda162dd8a
math.h has a macro _Mlong_double_ for the type to use when declaring
long double functions, and similar macros for other types.
math/Makefile uses -D_Mlong_double_=double in the case of long double
having the same ABI as double.
This originates with:
Mon Jul 8 13:37:40 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* math/math.h (_Mfloat_, _Mlong_double_): New macros, defined iff not
already defined to float, long double. Use those macros for _Mdouble_
defns when including mathcalls.h.
* math/Makefile [$(long-double-fcts) != yes] (CPPFLAGS): Append
-D_Mlong_double_=double.
However, math.h stopped declaring long double functions in the case of
long double having the same ABI as double (and thus probably stopped
actually needing the Makefile definition of _Mlong_double_) with:
1998-11-05 Ulrich Drepper <drepper@cygnus.com>
* math/math.h: Unconditionally include bits/mathdef.h. Declare
long double functions only if __NO_LONG_DOUBLE_MATH is not
defined.
* sysdeps/generic/bits/mathdef.h: Define only if __USE_ISOC9X.
Define __NO_LONG_DOUBLE_MATH.
* sysdeps/m68k/fpu/bits/mathdef.h: Define only if __USE_ISOC9X.
* sysdeps/i386/fpu/bits/mathdef.h: Likewise.
The declarations were since restored for compiling user code, but
remain absent when _LIBC is defined, which is sufficient to avoid
problems declaring function aliases of incompatible types. Thus the
indirection through the _Mlong_double_ macro is not needed (probably
since that 1998 patch), and this patch removes _Mlong_double_ and
associated macros for other types, leaving only the macro _Mdouble_
which is actually used as the type for which a given inclusion of
<bits/mathcalls.h> should declared functions.
Tested for x86_64, and tested with build-many-glibcs.py that installed
stripped shared libraries are unchanged by this patch.
* math/math.h [!_Mfloat_] (_Mfloat_): Do not define.
[!_Mlong_double_] (_Mlong_double_): Likewise.
[!_Mfloat16_] (_Mfloat16_): Likewise.
[!_Mfloat32_] (_Mfloat32_): Likewise.
[!_Mfloat64_] (_Mfloat64_): Likewise.
[!_Mfloat128_] (_Mfloat128_): Likewise.
[!_Mfloat32x_] (_Mfloat32x_): Likewise.
[!_Mfloat64x_] (_Mfloat64x_): Likewise.
[!_Mfloat128x_] (_Mfloat128x_): Likewise.
(_Mdouble_): Define without indirection through those macros.
* math/complex.h [!_Mfloat_] (_Mfloat_): Do not define.
[!_Mfloat128_] (_Mfloat128_): Likewise.
[_Mlong_double_] (_Mlong_double_): Likewise.
(_Mdouble_): Define without indirection through those macros.
* math/Makefile [$(long-double-fcts) != yes] (math-CPPFLAGS): Do
not add -D_Mlong_double_=double.
* include/math.h [_ISOMAC] (_Mlong_double_): Do not undefine.
* math/test-signgam-finite-c99.c (_Mlong_double_): Likewise.
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* Test lgamma functions do not set signgam for -ffinite-math-only for ISO C.
|
|
Copyright (C) 2015-2017 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/>. */
|
|
|
|
#undef _LIBC
|
|
#undef __LIBC_INTERNAL_MATH_INLINES
|
|
#undef _GNU_SOURCE
|
|
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
|
|
int signgam;
|
|
|
|
#define RUN_TESTS(FUNC, TYPE) \
|
|
do \
|
|
{ \
|
|
volatile TYPE a, b, c __attribute__ ((unused)); \
|
|
a = 0.5; \
|
|
b = -0.5; \
|
|
signgam = 123; \
|
|
c = FUNC (a); \
|
|
if (signgam == 123) \
|
|
puts ("PASS: " #FUNC " (0.5) setting signgam"); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #FUNC " (0.5) setting signgam"); \
|
|
result = 1; \
|
|
} \
|
|
signgam = 123; \
|
|
c = FUNC (b); \
|
|
if (signgam == 123) \
|
|
puts ("PASS: " #FUNC " (-0.5) setting signgam"); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #FUNC " (-0.5) setting signgam"); \
|
|
result = 1; \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
int result = 0;
|
|
RUN_TESTS (lgammaf, float);
|
|
RUN_TESTS (lgamma, double);
|
|
RUN_TESTS (lgammal, long double);
|
|
return result;
|
|
}
|