lib/gnutls_num.h

   1 /*
   2  *      Copyright (C) 2000 Nikos Mavroyanopoulos
   3  *
   4  * This file is part of GNUTLS.
   5  *
   6  * GNUTLS is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GNUTLS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  19  */
  20
  21 #include <gnutls_int.h>
  22
  23 #define GMIN(x,y) (x<y)?x:y
  24 #define GMAX(x,y) (x>y)?x:y
  25
  26 #define rotl32(x,n)   (((x) << ((uint16)(n))) | ((x) >> (32 - (uint16)(n))))
  27 #define rotr32(x,n)   (((x) >> ((uint16)(n))) | ((x) << (32 - (uint16)(n))))
  28 #define rotl16(x,n)   (((x) << ((uint16)(n))) | ((x) >> (16 - (uint16)(n))))
  29 #define rotr16(x,n)   (((x) >> ((uint16)(n))) | ((x) << (16 - (uint16)(n))))
  30
  31 #define byteswap16(x)  ((rotl16(x, 8) & 0x00ff) | (rotr16(x, 8) & 0xff00))
  32 #define byteswap32(x)  ((rotl32(x, 8) & 0x00ff00ffUL) | (rotr32(x, 8) & 0xff00ff00UL))
  33
  34 uint32 _gnutls_uint24touint32( uint24 num);
  35 uint24 _gnutls_uint32touint24( uint32 num);
  36 uint32 _gnutls_read_uint32( const opaque* data);
  37 uint16 _gnutls_read_uint16( const opaque* data);
  38 uint32 _gnutls_conv_uint32( uint32 data);
  39 uint16 _gnutls_conv_uint16( uint16 data);
  40 uint64 _gnutls_conv_uint64( const uint64 *data);
  41 uint32 _gnutls_read_uint24( const opaque* data);
  42 void _gnutls_write_uint24( uint32 num, opaque* data);
  43 void _gnutls_write_uint32( uint32 num, opaque* data);
  44 void _gnutls_write_uint16( uint16 num, opaque* data);
  45 uint32 _gnutls_uint64touint32( const uint64*);
  46
  47 #ifndef HAVE_UINT64
  48 int _gnutls_uint64zero( uint64 *);
  49 int _gnutls_uint64pp( uint64 *);
  50 # define UINT64DATA(x) x.i
  51
  52 #else
  53 # define UINT64DATA(x) &x
  54 # define rotl64(x,n)   (((x) << ((uint16)(n))) | ((x) >> (64 - (uint16)(n))))
  55 # define rotr64(x,n)   (((x) >> ((uint16)(n))) | ((x) << (64 - (uint16)(n))))
  56 # define byteswap64(x)  ((rotl64(x, 8) & 0x00ff00ff00ff00ffUL) | (rotr64(x, 8) & 0xff00ff00ff00ff00UL))
  57
  58 # define _gnutls_uint64pp(x) ((++(*x)==0) ? -1 : 0)
  59 # define _gnutls_uint64zero(x) (*x) = 0
  60
  61 #endif