From 282bc306f83776398dce367bc8eee1d6a38d6af4 Mon Sep 17 00:00:00 2001 From: Boudewijn Dekker Date: Sat, 13 Mar 1999 09:14:51 +0000 Subject: [PATCH] Added logb from glibc math.h file svn path=/trunk/; revision=306 --- reactos/lib/crtdll/float/logb.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 reactos/lib/crtdll/float/logb.c diff --git a/reactos/lib/crtdll/float/logb.c b/reactos/lib/crtdll/float/logb.c new file mode 100644 index 00000000000..71e9996d3a8 --- /dev/null +++ b/reactos/lib/crtdll/float/logb.c @@ -0,0 +1,31 @@ +/* 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 , 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; +} \ No newline at end of file