libgloss/crx/putnum.c

   1 /* putnum.c -- put a hex number on the output device.
   2  *
   3  * Copyright (c) 1995 Cygnus Support
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15 #include <_ansi.h>
  16
  17 /*
  18  * putnum -- print a 32 bit number in hex
  19  */
  20 void
  21 putnum (unsigned int num)
  22 {
  23   char  buf[9];
  24   int   cnt;
  25   char  *ptr;
  26   int   digit;
  27
  28   ptr = buf;
  29   for (cnt = 7 ; cnt >= 0 ; cnt--) {
  30     digit = (num >> (cnt * 4)) & 0xf;
  31
  32     if (digit <= 9)
  33       *ptr++ = (char) ('0' + digit);
  34     else
  35       *ptr++ = (char) ('a' - 10 + digit);
  36   }
  37
  38   *ptr = (char) 0;
  39   print (buf);
  40 }