arch/mips/math-emu/ieee754d.c

   1 /*
   2  * Some debug functions
   3  *
   4  * MIPS floating point support
   5  *
   6  * Copyright (C) 1994-2000 Algorithmics Ltd.
   7  *
   8  *  This program is free software; you can distribute it and/or modify it
   9  *  under the terms of the GNU General Public License (Version 2) as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope it will be useful, but WITHOUT
  13  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  *  for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  20  *
  21  *  Nov 7, 2000
  22  *  Modified to build and operate in Linux kernel environment.
  23  *
  24  *  Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
  25  *  Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
  26  */
  27
  28 #include <linux/types.h>
  29 #include <linux/printk.h>
  30 #include "ieee754.h"
  31 #include "ieee754sp.h"
  32 #include "ieee754dp.h"
  33
  34 union ieee754dp ieee754dp_dump(char *m, union ieee754dp x)
  35 {
  36         int i;
  37
  38         printk("%s", m);
  39         printk("<%08x,%08x>\n", (unsigned) (x.bits >> 32),
  40                (unsigned) x.bits);
  41         printk("\t=");
  42         switch (ieee754dp_class(x)) {
  43         case IEEE754_CLASS_QNAN:
  44         case IEEE754_CLASS_SNAN:
  45                 printk("Nan %c", DPSIGN(x) ? '-' : '+');
  46                 for (i = DP_FBITS - 1; i >= 0; i--)
  47                         printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
  48                 break;
  49         case IEEE754_CLASS_INF:
  50                 printk("%cInfinity", DPSIGN(x) ? '-' : '+');
  51                 break;
  52         case IEEE754_CLASS_ZERO:
  53                 printk("%cZero", DPSIGN(x) ? '-' : '+');
  54                 break;
  55         case IEEE754_CLASS_DNORM:
  56                 printk("%c0.", DPSIGN(x) ? '-' : '+');
  57                 for (i = DP_FBITS - 1; i >= 0; i--)
  58                         printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
  59                 printk("e%d", DPBEXP(x) - DP_EBIAS);
  60                 break;
  61         case IEEE754_CLASS_NORM:
  62                 printk("%c1.", DPSIGN(x) ? '-' : '+');
  63                 for (i = DP_FBITS - 1; i >= 0; i--)
  64                         printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
  65                 printk("e%d", DPBEXP(x) - DP_EBIAS);
  66                 break;
  67         default:
  68                 printk("Illegal/Unknown IEEE754 value class");
  69         }
  70         printk("\n");
  71         return x;
  72 }
  73
  74 union ieee754sp ieee754sp_dump(char *m, union ieee754sp x)
  75 {
  76         int i;
  77
  78         printk("%s=", m);
  79         printk("<%08x>\n", (unsigned) x.bits);
  80         printk("\t=");
  81         switch (ieee754sp_class(x)) {
  82         case IEEE754_CLASS_QNAN:
  83         case IEEE754_CLASS_SNAN:
  84                 printk("Nan %c", SPSIGN(x) ? '-' : '+');
  85                 for (i = SP_FBITS - 1; i >= 0; i--)
  86                         printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
  87                 break;
  88         case IEEE754_CLASS_INF:
  89                 printk("%cInfinity", SPSIGN(x) ? '-' : '+');
  90                 break;
  91         case IEEE754_CLASS_ZERO:
  92                 printk("%cZero", SPSIGN(x) ? '-' : '+');
  93                 break;
  94         case IEEE754_CLASS_DNORM:
  95                 printk("%c0.", SPSIGN(x) ? '-' : '+');
  96                 for (i = SP_FBITS - 1; i >= 0; i--)
  97                         printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
  98                 printk("e%d", SPBEXP(x) - SP_EBIAS);
  99                 break;
 100         case IEEE754_CLASS_NORM:
 101                 printk("%c1.", SPSIGN(x) ? '-' : '+');
 102                 for (i = SP_FBITS - 1; i >= 0; i--)
 103                         printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
 104                 printk("e%d", SPBEXP(x) - SP_EBIAS);
 105                 break;
 106         default:
 107                 printk("Illegal/Unknown IEEE754 value class");
 108         }
 109         printk("\n");
 110         return x;
 111 }