1 /* ix87 specific frexp implementation for long double.
2 Copyright (C) 1997-2018 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, see
18 <http://www.gnu.org/licenses/>. */
20 #include <libm-alias-ldouble.h>
21 #include <machine/asm.h>
27 two64: .byte 0, 0, 0, 0, 0, 0, 0xf0, 0x43
28 ASM_SIZE_DIRECTIVE(two64)
31 #define MO(op) op##@GOTOFF(%edx)
36 #define PARMS 4 /* no space for saved regs */
64 fmull MO(two64) /* It's not necessary to use a 80bit factor */
78 /* Store %ecx in the variable pointed to by the second argument,
79 get the factor from the stack and return. */
80 1: movl EXPP(%esp), %eax
86 /* Infinity or NaN; ensure signaling NaNs are quieted. */
87 3: movl EXPP(%esp), %eax
93 libm_alias_ldouble (__frexp, frexp)