glibc/sysdeps/m68k/m680x0/fpu/e_scalb.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

62 lines
1.7 KiB
C

/* Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
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/>. */
#include <math.h>
#include <math_private.h>
#include "mathimpl.h"
#include <libm-alias-finite.h>
#ifndef SUFF
#define SUFF
#endif
#ifndef float_type
#define float_type double
#endif
#define CONCATX(a,b) __CONCAT(a,b)
#define s(name) CONCATX(name,SUFF)
#define m81(func) __m81_u(s(func))
float_type
s(__ieee754_scalb) (float_type x, float_type fn)
{
float_type retval;
unsigned long x_cond = __m81_test (x);
unsigned long fn_cond = __m81_test (fn);
if ((x_cond | fn_cond) & __M81_COND_NAN)
return x * fn;
if (fn_cond & __M81_COND_INF)
{
if (!(fn_cond & __M81_COND_NEG))
return x * fn;
else if (x_cond & __M81_COND_ZERO)
return x;
else
return x / -fn;
}
if (m81(__rint) (fn) != fn)
return (x - x) / (x - x);
__asm ("fscale%.x %1, %0" : "=f" (retval) : "f" (fn), "0" (x));
return retval;
}
libm_alias_finite (s(__ieee754_scalb), s (__scalb))