1 /* $OpenBSD: fpu_extern.h,v 1.3 2008/06/26 05:42:05 ray Exp $ */ 2 3 /*- 4 * Copyright (c) 1995 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: fpu_extern.h,v 1.4 2000/08/03 18:32:08 eeh Exp $ 32 * $FreeBSD: src/lib/libc/sparc64/fpu/fpu_extern.h,v 1.6 2002/04/27 21:56:28 jake Exp $ 33 */ 34 35 #ifndef _SPARC64_FPU_FPU_EXTERN_H_ 36 #define _SPARC64_FPU_FPU_EXTERN_H_ 37 38 struct utrapframe; 39 union instr; 40 struct fpemu; 41 struct fpn; 42 43 /* fpu.c */ 44 int __fpu_exception(struct utrapframe *tf); 45 46 /* fpu_add.c */ 47 struct fpn *__fpu_add(struct fpemu *); 48 49 /* fpu_compare.c */ 50 void __fpu_compare(struct fpemu *, int, int); 51 52 /* fpu_div.c */ 53 struct fpn *__fpu_div(struct fpemu *); 54 55 /* fpu_explode.c */ 56 int __fpu_itof(struct fpn *, u_int); 57 int __fpu_uitof(struct fpn *, u_int); 58 int __fpu_xtof(struct fpn *, u_int64_t); 59 int __fpu_uxtof(struct fpn *, u_int64_t); 60 int __fpu_stof(struct fpn *, u_int); 61 int __fpu_dtof(struct fpn *, u_int, u_int ); 62 int __fpu_qtof(struct fpn *, u_int, u_int , u_int , u_int ); 63 void __fpu_explode(struct fpemu *, struct fpn *, int, int ); 64 65 /* fpu_implode.c */ 66 u_int __fpu_ftoi(struct fpemu *, struct fpn *); 67 u_int __fpu_ftox(struct fpemu *, struct fpn *, u_int *); 68 u_int __fpu_ftos(struct fpemu *, struct fpn *); 69 u_int __fpu_ftod(struct fpemu *, struct fpn *, u_int *); 70 u_int __fpu_ftoq(struct fpemu *, struct fpn *, u_int *); 71 void __fpu_implode(struct fpemu *, struct fpn *, int, u_int *); 72 73 /* fpu_mul.c */ 74 struct fpn *__fpu_mul(struct fpemu *); 75 76 /* fpu_sqrt.c */ 77 struct fpn *__fpu_sqrt(struct fpemu *); 78 79 /* fpu_subr.c */ 80 /* 81 * Shift a number right some number of bits, taking care of round/sticky. 82 * Note that the result is probably not a well-formed number (it will lack 83 * the normal 1-bit mant[0]&FP_1). 84 */ 85 int __fpu_shr(register struct fpn *, register int); 86 void __fpu_norm(register struct fpn *); 87 /* Build a new Quiet NaN (sign=0, frac=all 1's). */ 88 struct fpn *__fpu_newnan(register struct fpemu *); 89 90 #endif /* !_SPARC64_FPU_FPU_EXTERN_H_ */ 91