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Annotation of Net2/arch/tahoe/math/kfp.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1985 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Computer Consoles Inc.
        !             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 University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)Kfp.h       7.1 (Berkeley) 12/6/90
        !            37:  */
        !            38: 
        !            39: /*
        !            40:  * Opcodes to be emulated by kernel software.
        !            41:  */
        !            42: #define        CVLF    0x76
        !            43: #define        CVLD    0x77
        !            44: #define        CVFL    0x86
        !            45: #define        CVDL    0x87
        !            46: #define        LDFD    0x97
        !            47: #define        CVDF    0xa6
        !            48: #define        ADDF    0xc6
        !            49: #define        ADDD    0xc7
        !            50: #define        SUBF    0xd6
        !            51: #define        SUBD    0xd7
        !            52: #define        MULF    0xe6
        !            53: #define        MULD    0xe7
        !            54: #define        DIVF    0xf6
        !            55: #define        DIVD    0xf7
        !            56: #define        SINF    0x05
        !            57: #define        COSF    0x15
        !            58: #define        ATANF   0x25
        !            59: #define        LOGF    0x35
        !            60: #define        SQRTF   0x45
        !            61: #define        EXPF    0x55
        !            62: 
        !            63: /* HFS bits:   */
        !            64: #define HFS_UNDF       0x008   /* float underflow */
        !            65: #define HFS_OVF                0x004   /* float overflow */
        !            66: 
        !            67: #define HFS_RANGE      0x8000  /* set u_error to ERANGE */
        !            68: #define HFS_DOM                0x4000  /* set u_error to EDOM */
        !            69: #define HFS_DIVZ       0x2000  /* divide by zero flag */
        !            70: 
        !            71: /* destination types for the f.p. opcodes:     */
        !            72: #define LONG   01
        !            73: #define FLOAT  02
        !            74: #define        DOUBLE  03
        !            75: 
        !            76: /* exceptions: */
        !            77: #define OVF_EXC                0x003   /* floating overflow */
        !            78: #define UNDF_EXC       0x004   /* floating underflow */
        !            79: #define DIV0_EXC       0x005   /* floating divide by 0 */

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