.ref-BSD-4_3_Net_2/usr/src/sys/tahoe/math/Kfp.h

/*-
 * Copyright (c) 1985 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Computer Consoles Inc.
 *
 * 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.
 *
 *      @(#)Kfp.h       7.1 (Berkeley) 12/6/90
 */

/*
 * Opcodes to be emulated by kernel software.
 */
#define CVLF    0x76
#define CVLD    0x77
#define CVFL    0x86
#define CVDL    0x87
#define LDFD    0x97
#define CVDF    0xa6
#define ADDF    0xc6
#define ADDD    0xc7
#define SUBF    0xd6
#define SUBD    0xd7
#define MULF    0xe6
#define MULD    0xe7
#define DIVF    0xf6
#define DIVD    0xf7
#define SINF    0x05
#define COSF    0x15
#define ATANF   0x25
#define LOGF    0x35
#define SQRTF   0x45
#define EXPF    0x55

/* HFS bits:    */
#define HFS_UNDF        0x008   /* float underflow */
#define HFS_OVF         0x004   /* float overflow */

#define HFS_RANGE       0x8000  /* set u_error to ERANGE */
#define HFS_DOM         0x4000  /* set u_error to EDOM */
#define HFS_DIVZ        0x2000  /* divide by zero flag */

/* destination types for the f.p. opcodes:      */
#define LONG    01
#define FLOAT   02
#define DOUBLE  03

/* exceptions:  */
#define OVF_EXC         0x003   /* floating overflow */
#define UNDF_EXC        0x004   /* floating underflow */
#define DIV0_EXC        0x005   /* floating divide by 0 */