The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
Elliott Hughes | a0ee078 | 2013-01-30 19:06:37 -0800 | [diff] [blame] | 26 | * $FreeBSD$ |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 27 | */ |
| 28 | |
| 29 | #include <math.h> |
| 30 | |
| 31 | #include "fpmath.h" |
| 32 | |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 33 | int __signbit(double d) |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 34 | { |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 35 | union IEEEd2bits u; |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 36 | |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 37 | u.d = d; |
| 38 | return (u.bits.sign); |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 39 | } |
| 40 | |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 41 | int __signbitf(float f) |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 42 | { |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 43 | union IEEEf2bits u; |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 44 | |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 45 | u.f = f; |
| 46 | return (u.bits.sign); |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 47 | } |
| 48 | |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 49 | #ifdef __LP64__ |
| 50 | int __signbitl(long double e) |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 51 | { |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 52 | union IEEEl2bits u; |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 53 | |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 54 | u.e = e; |
| 55 | return (u.bits.sign); |
The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 56 | } |
Calin Juravle | 1abc9ff | 2014-04-17 18:17:32 +0100 | [diff] [blame] | 57 | #else // __LP32__ |
| 58 | __weak_reference(__signbit, __signbitl); |
| 59 | #endif // __LP64__ |