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Move wrappers to libm-compat-calls-auto

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This commit moves one step towards the deprecation of wrappers that
use _LIB_VERSION / matherr / __kernel_standard functionality, by
adding the suffix '_compat' to their filenames and adjusting Makefiles
and #includes accordingly.

New template wrappers that do not use such functionality will be added
by future patches and will be first used by the float128 wrappers.
This commit is contained in:
Gabriel F. T. Gomes
2016-12-13 22:42:51 -02:00
parent 811de1a688
commit f67d78192c
191 changed files with 474 additions and 66 deletions
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76
math/w_scalbf_compat.c Normal file
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/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
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 <errno.h>
#include <math.h>
#include <math_private.h>
static float
__attribute__ ((noinline))
sysv_scalbf (float x, float fn)
{
float z = __ieee754_scalbf (x, fn);
if (__glibc_unlikely (isinf (z)))
{
if (isfinite (x))
return __kernel_standard_f (x, fn, 132); /* scalb overflow */
else
__set_errno (ERANGE);
}
else if (__builtin_expect (z == 0.0f, 0) && z != x)
return __kernel_standard_f (x, fn, 133); /* scalb underflow */
return z;
}
/* Wrapper scalbf */
float
__scalbf (float x, float fn)
{
if (__glibc_unlikely (_LIB_VERSION == _SVID_))
return sysv_scalbf (x, fn);
else
{
float z = __ieee754_scalbf (x, fn);
if (__glibc_unlikely (!isfinite (z) || z == 0.0f))
{
if (isnan (z))
{
if (!isnan (x) && !isnan (fn))
__set_errno (EDOM);
}
else if (isinf (z))
{
if (!isinf (x) && !isinf (fn))
__set_errno (ERANGE);
}
else
{
/* z == 0. */
if (x != 0.0f && !isinf (fn))
__set_errno (ERANGE);
}
}
return z;
}
}
weak_alias (__scalbf, scalbf)