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Annotation of Net2/arch/tahoe/math/kfp.h, revision 1.1.1.1

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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