| /* $OpenBSD: ieee.h,v 1.4 2011/11/08 17:06:51 deraadt Exp $ */ |
| /* $NetBSD: ieee.h,v 1.2 2001/02/21 17:43:50 bjh21 Exp $ */ |
| |
| /* |
| * Copyright (c) 1992, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This software was developed by the Computer Systems Engineering group |
| * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
| * contributed to Berkeley. |
| * |
| * All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Lawrence Berkeley Laboratory. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)ieee.h 8.1 (Berkeley) 6/11/93 |
| */ |
| |
| #ifndef _MACHINE_IEEE_H_ |
| #define _MACHINE_IEEE_H_ |
| |
| #include <sys/types.h> |
| |
| __BEGIN_DECLS |
| |
| #define SNG_EXPBITS 8 |
| #define SNG_FRACBITS 23 |
| |
| #define SNG_EXP_INFNAN 255 |
| #define SNG_EXP_BIAS 127 |
| |
| struct ieee_single { |
| unsigned sng_frac:23; |
| unsigned sng_exp:8; |
| unsigned sng_sign:1; |
| }; |
| |
| #define DBL_EXPBITS 11 |
| #define DBL_FRACHBITS 20 |
| #define DBL_FRACLBITS 32 |
| #define DBL_FRACBITS 52 |
| |
| #define DBL_EXP_INFNAN 2047 |
| #define DBL_EXP_BIAS 1023 |
| |
| struct ieee_double { |
| unsigned dbl_fracl; |
| unsigned dbl_frach:20; |
| unsigned dbl_exp:11; |
| unsigned dbl_sign:1; |
| }; |
| |
| #if __LP64__ |
| |
| /* 64-bit Android uses ld128 long doubles. */ |
| |
| #define EXT_EXPBITS 15 |
| #define EXT_FRACHBITS 16 |
| #define EXT_FRACHMBITS 32 |
| #define EXT_FRACLMBITS 32 |
| #define EXT_FRACLBITS 32 |
| #define EXT_FRACBITS 112 |
| |
| #define EXT_EXP_INFNAN 32767 |
| #define EXT_EXP_BIAS 16383 |
| |
| #define EXT_IMPLICIT_NBIT |
| |
| #define EXT_TO_ARRAY32(p, a) do { \ |
| (a)[0] = (uint32_t)(p)->ext_fracl; \ |
| (a)[1] = (uint32_t)(p)->ext_fraclm; \ |
| (a)[2] = (uint32_t)(p)->ext_frachm; \ |
| (a)[3] = (uint32_t)(p)->ext_frach; \ |
| } while(0) |
| |
| struct ieee_ext { |
| unsigned ext_fracl; |
| unsigned ext_fraclm; |
| unsigned ext_frachm; |
| unsigned ext_frach:16; |
| unsigned ext_exp:15; |
| unsigned ext_sign:1; |
| }; |
| |
| #endif |
| |
| __END_DECLS |
| |
| #endif /* _MACHINE_IEEE_H_ */ |