fpu_extern.h revision 92905 
1/*-
2 * Copyright (c) 1995 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Christos Zoulas.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *        This product includes software developed by the NetBSD
19 *        Foundation, Inc. and its contributors.
20 * 4. Neither the name of The NetBSD Foundation nor the names of its
21 *    contributors may be used to endorse or promote products derived
22 *    from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 *
36 *	from: NetBSD: fpu_extern.h,v 1.4 2000/08/03 18:32:08 eeh Exp
37 *
38 * $FreeBSD: head/lib/libc/sparc64/fpu/fpu_extern.h 92905 2002-03-21 22:49:10Z obrien $
39 */
40
41#ifndef _SPARC64_FPU_FPU_EXTERN_H_
42#define _SPARC64_FPU_FPU_EXTERN_H_
43
44struct proc;
45struct fpstate;
46struct utrapframe;
47union instr;
48struct fpemu;
49struct fpn;
50
51/* fpu.c */
52void __fpu_exception(struct utrapframe *tf);
53void __fpu_panic(char *msg);
54
55/* fpu_add.c */
56struct fpn *__fpu_add(struct fpemu *);
57
58/* fpu_compare.c */
59void __fpu_compare(struct fpemu *, int, int);
60
61/* fpu_div.c */
62struct fpn *__fpu_div(struct fpemu *);
63
64/* fpu_explode.c */
65int __fpu_itof(struct fpn *, u_int);
66int __fpu_xtof(struct fpn *, u_int64_t);
67int __fpu_stof(struct fpn *, u_int);
68int __fpu_dtof(struct fpn *, u_int, u_int );
69int __fpu_qtof(struct fpn *, u_int, u_int , u_int , u_int );
70void __fpu_explode(struct fpemu *, struct fpn *, int, int );
71
72/* fpu_implode.c */
73u_int __fpu_ftoi(struct fpemu *, struct fpn *);
74u_int __fpu_ftox(struct fpemu *, struct fpn *, u_int *);
75u_int __fpu_ftos(struct fpemu *, struct fpn *);
76u_int __fpu_ftod(struct fpemu *, struct fpn *, u_int *);
77u_int __fpu_ftoq(struct fpemu *, struct fpn *, u_int *);
78void __fpu_implode(struct fpemu *, struct fpn *, int, u_int *);
79
80/* fpu_mul.c */
81struct fpn *__fpu_mul(struct fpemu *);
82
83/* fpu_sqrt.c */
84struct fpn *__fpu_sqrt(struct fpemu *);
85
86/* fpu_subr.c */
87/*
88 * Shift a number right some number of bits, taking care of round/sticky.
89 * Note that the result is probably not a well-formed number (it will lack
90 * the normal 1-bit mant[0]&FP_1).
91 */
92int __fpu_shr(register struct fpn *, register int);
93void __fpu_norm(register struct fpn *);
94/* Build a new Quiet NaN (sign=0, frac=all 1's). */
95struct fpn *__fpu_newnan(register struct fpemu *);
96
97#endif /* !_SPARC64_FPU_FPU_EXTERN_H_ */
98