mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2025-01-30 12:31:53 +08:00
Code Issues Packages Projects Releases Wiki Activity

Make common nextdown implementation generic.

Browse Source 
With the exception of those machines using the ldbl-opt in
an Implies file, this is a trivial transformation.

nextdownl is not subject to the non-trivial versioning rules
of the other generated functions, so to keep things simple,
it is handled as a one-off case in ldbl-opt to preserve the
existing behavior.
This commit is contained in:
Paul E. Murphy 2016-08-24 16:05:28 -05:00
parent 7b7c39450b
commit ee8a49071c
6 changed files with 23 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
ChangeLog
View File

@ -1,3 +1,15 @@
2016-09-01 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
* math/Makefile: (gen-libm-calls): Add s_nextdown.
(libm-calls): Remove above.
* math/s_nextdown.c: Refactor into ...
* math/s_nextdown_template.c: New file.
* math/s_nextdownf.c: Removed.
* math/s_nextdownl.c: Removed.
* sysdeps/ieee754/ldbl-opt/s_nextdownl.c: New file.
2016-09-01 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
* math/Makefile (gen-libm-calls): Add s_fdim.

4
math/Makefile
View File

@ -49,7 +49,7 @@ gen-libm-calls = cargF conjF cimagF crealF cabsF s_cacosF \
s_cacoshF s_ccosF s_ccoshF s_casinF s_csinF s_casinhF \
k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF \
s_cpowF s_clog10F s_fdimF
s_cpowF s_clog10F s_fdimF s_nextdownF
libm-calls = \
e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
@ -70,7 +70,7 @@ libm-calls = \
s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F \
s_issignalingF $(calls:s_%=m_%) x2y2m1F \
gamma_productF lgamma_negF lgamma_productF \
s_nextupF s_nextdownF $(gen-libm-calls)
s_nextupF $(gen-libm-calls)
libm-compat-calls-ldouble-yes = w_lgamma_compatl k_standardl
libm-compat-calls = w_lgamma_compatf w_lgamma_compat k_standard k_standardf \

33
math/s_nextdown.c
View File

@ -1,33 +0,0 @@
/* Return the greatest floating-point number less than X.
Copyright (C) 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
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
/* Return the greatest floating-point number less than X. */
double
__nextdown (double x)
{
return -__nextup (-x);
}
weak_alias (__nextdown, nextdown)
#ifdef NO_LONG_DOUBLE
strong_alias (__nextdown, __nextdownl)
weak_alias (__nextdown, nextdownl)
#endif

8
math/s_nextdownf.c → math/s_nextdown_template.c
View File

@ -20,10 +20,10 @@
#include <math_private.h>
/* Return the greatest floating-point number less than X. */
float
__nextdownf (float x)
FLOAT
M_DECL_FUNC (__nextdown) (FLOAT x)
{
return -__nextupf (-x);
return -M_SUF (__nextup) (-x);
}
weak_alias (__nextdownf, nextdownf)
declare_mgen_alias (__nextdown, nextdown);

29
math/s_nextdownl.c
View File

@ -1,29 +0,0 @@
/* Return the greatest floating-point number less than X.
Copyright (C) 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
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
/* Return the greatest floating-point number less than X. */
long double
__nextdownl (long double x)
{
return -__nextupl (-x);
}
weak_alias (__nextdownl, nextdownl)

5
sysdeps/ieee754/ldbl-opt/s_nextdownl.c Normal file
View File

@ -0,0 +1,5 @@
/* nextdownl is not subject to complex aliasing rules. It was
added in glibc 2.24. */
#define declare_mgen_alias(from, to) weak_alias (M_SUF (from), M_SUF (to))
#include <math-type-macros-ldouble.h>
#include <s_nextdown_template.c>