1/* Compute maximum of two numbers, regarding NaN as missing argument. 2 Copyright (C) 1997 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, write to the Free 18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 19 02111-1307 USA. */ 20 21#include <sysdep.h> 22 23 .text 24ENTRY(__fmaxl) 25 fldt 16(%esp) // y 26 fxam 27 fnstsw 28 fldt 4(%esp) // y : x 29 30 andb $0x45, %ah 31 cmpb $0x01, %ah 32 je 1f // y == NaN 33 34 fucom %st(1) 35 fnstsw 36 sahf 37 jnc 1f 38 39 fxch %st(1) 401: fstp %st(1) 41 42 ret 43END(__fmaxl) 44weak_alias (__fmaxl, fmaxl) 45