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Added logb from glibc math.h file

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svn path=/trunk/; revision=306
This commit is contained in:
Boudewijn Dekker 1999-03-13 09:14:51 +00:00
parent 481a3a687c
commit 282bc306f8
1 changed files with 31 additions and 0 deletions
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31
reactos/lib/crtdll/float/logb.c Normal file
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/* Math functions for i387.
Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by John C. Bowman <bowman@ipp-garching.mpg.de>, 1995.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
double logb (double __x);
double logb (double __x)
{
register double __value, __junk;
__asm __volatile__
("fxtract\n\t"
: "=t" (__junk), "=u" (__value) : "0" (__x));
return __value;
}