1 /* ix87 specific frexp implementation for float.
2 Copyright (C) 1997, 2000, 2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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.
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.
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
21 #include <machine/asm.h>
32 ASM_TYPE_DIRECTIVE(two25,@object)
33 two25: .byte 0, 0, 0, 0x4c
34 ASM_SIZE_DIRECTIVE(two25)
37 #define MO(op) op##@GOTOFF(%edx)
42 #define PARMS LINKAGE /* no space for saved regs */
47 ENTRY (BP_SYM (__frexpf))
53 andl $0x7fffffff, %eax
55 cmpl $0x7f800000, %eax
58 cmpl $0x00800000, %eax
71 andl $0x7fffffff, %eax
74 andl $0x807fffff, %edx
80 /* Store %ecx in the variable pointed to by the second argument,
81 get the factor from the stack and return. */
82 1: movl EXPP(%esp), %eax
83 CHECK_BOUNDS_BOTH_WIDE (%eax, EXPP(%esp), $4)
89 END (BP_SYM (__frexpf))
90 weak_alias (BP_SYM (__frexpf), BP_SYM (frexpf))