/*
  This program is part of the TACLeBench benchmark suite.
  Version V 1.x

  Name: ndes

  Author: unknown

  Function: A lot of bit manipulation, shifts, array and matrix calculations.

  Source:

  Changes: no major functional changes

  License: May be used, modified, and re-distributed freely.

*/

/* A read from this address will result in an known value of 1 */
#define KNOWN_VALUE 1
#define NDES_WORSTCASE 1
/*
  Declaration of global variables
*/

typedef struct NDES_IMMENSE {
  unsigned long l, r;
} ndes_immense;
typedef struct NDES_GREAT {
  unsigned long l, c, r;
} ndes_great;

unsigned long ndes_bit[ 33 ];
ndes_immense ndes_inp, ndes_key, ndes_out;
int ndes_newkey, ndes_isw;

static ndes_immense ndes_icd;
static char ndes_ipc1[ 57 ];
static char ndes_ipc2[ 49 ];


#ifdef NDES_WORSTCASE
int ndes_value = 1;
#else
int ndes_value = 0;
#endif

/* Forward funtion prototypes */

void ndes_des( ndes_immense inp, ndes_immense key, int *newkey, int isw,
               ndes_immense *out );
void ndes_cyfun( unsigned long ir, ndes_great k, unsigned long *iout );
unsigned long ndes_getbit( ndes_immense source, int bitno, int nbits );
void ndes_ks( /*immense key, */int n, ndes_great *kn );
void ndes_init( void );
int ndes_return( void );
void ndes_main( void );
int main( void );

/*
   Initialization
*/
void ndes_init()
{
  unsigned int i;
  static volatile char ndes_ipc1_tmp[ 57 ] = {
    0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50,
    42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60,
    52, 44, 36, 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38,
    30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
  };
  static volatile char ndes_ipc2_tmp[ 49 ] = {
    0, 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21,
    10, 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, 41, 52, 31,
    37, 47, 55, 30, 40, 51, 45, 33, 48, 44, 49, 39, 56, 34,
    53, 46, 42, 50, 36, 29, 32
  };
  _Pragma( "loopbound min 57 max 57" )
  for ( i = 0; i < 57; i++ )
    ndes_ipc1[ i ] = ndes_ipc1_tmp[ i ];
  _Pragma( "loopbound min 49 max 49" )
  for ( i = 0; i < 49; i++ )
    ndes_ipc2[ i ] = ndes_ipc2_tmp[ i ];

  ndes_inp.l = KNOWN_VALUE * 35;
  ndes_inp.r = KNOWN_VALUE * 26;
  ndes_key.l = KNOWN_VALUE * 2;
  ndes_key.r = KNOWN_VALUE * 16;

  ndes_newkey = ndes_value;
  ndes_isw = ndes_value;
}
/*
   Arithmetic functions
*/
void ndes_des( ndes_immense inp, ndes_immense key, int *newkey, int isw,
               ndes_immense *out )
{
  static volatile char ip[ 65 ] = {
    0, 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36,
    28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40,
    32, 24, 16, 8, 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35,
    27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39,
    31, 23, 15, 7
  };

  static volatile char ipm[ 65 ] = {
    0, 40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15,
    55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13,
    53, 21, 61, 29, 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11,
    51, 19, 59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9,
    49, 17, 57, 25
  };
  static ndes_great kns[ 17 ];

  #ifdef NDES_WORSTCASE
  static int initflag = 1;
  #else
  static int initflag = 0;
  #endif

  int ii, i, j, k;
  unsigned long ic, shifter;
  ndes_immense itmp;
  ndes_great pg;

  if ( initflag ) {
    initflag = 0;
    ndes_bit[ 1 ] = shifter = 1L;

    _Pragma( "loopbound min 31 max 31" )
    for ( j = 2; j <= 32; j++ )
      ndes_bit[ j ] = ( shifter <<= 1 );
  }

  if ( *newkey ) {
    *newkey = 0;
    ndes_icd.r = ndes_icd.l = 0L;

    _Pragma( "loopbound min 28 max 28" )
    for ( j = 28, k = 56; j >= 1; j--, k-- ) {
      ndes_icd.r = ( ndes_icd.r << 1 ) | ndes_getbit( key, ndes_ipc1[ j ], 32 );
      ndes_icd.l = ndes_icd.l << 1;
      ndes_icd.l = ( ndes_icd.l ) | ndes_getbit( key, ndes_ipc1[ k ], 32 );
    }

    _Pragma( "loopbound min 16 max 16" )
    for ( i = 1; i <= 16; i++ ) {
      pg = kns[ i ];
      ndes_ks( /* key,*/ i, &pg );
      kns[ i ] = pg;
    }
  }

  itmp.r = itmp.l = 0L;

  _Pragma( "loopbound min 32 max 32" )
  for ( j = 32, k = 64; j >= 1; j--, k-- ) {
    itmp.r = itmp.r << 1;
    itmp.r = ( itmp.r ) | ndes_getbit( inp, ip[ j ], 32 );
    itmp.l = itmp.l << 1;
    itmp.l = ( itmp.l ) | ndes_getbit( inp, ip[ k ], 32 );
  }
  _Pragma( "loopbound min 16 max 16" )
  for ( i = 1; i <= 16; i++ ) {
    ii = ( isw == 1 ? 17 - i : i );
    ndes_cyfun( itmp.l, kns[ ii ], &ic );
    ic ^= itmp.r;
    itmp.r = itmp.l;
    itmp.l = ic;
  }

  ic = itmp.r;
  itmp.r = itmp.l;
  itmp.l = ic;
  ( *out ).r = ( *out ).l = 0L;

  _Pragma( "loopbound min 32 max 32" )
  for ( j = 32, k = 64; j >= 1; j--, k-- ) {
    ( *out ).r = ( *out ).r << 1;
    ( *out ).r = ( ( *out ).r ) | ndes_getbit( itmp, ipm[ j ], 32 );
    ( *out ).l = ( *out ).l << 1;
    ( *out ).l = ( ( *out ).l ) | ndes_getbit( itmp, ipm[ k ], 32 );
  }
}


void ndes_cyfun( unsigned long ir, ndes_great k, unsigned long *iout )
{
  static volatile long iet[ 49 ] = {0, 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9,
                           10, 11, 12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19,
                           20, 21, 20, 21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29,
                           28, 29, 30, 31, 32, 1
                          };
  static volatile long ipp[ 33 ] = {0, 16, 7, 20, 21, 29, 12, 28, 17, 1, 15,
                           23, 26, 5, 18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13,
                           30, 6, 22, 11, 4, 25
                          };
  static volatile long is[ 16 ][ 4 ][ 9 ] = {{{ 0, 14, 15, 10, 7, 2, 12, 4, 13 },
      { 0, 0, 3, 13, 13, 14, 10, 13, 1 },
      { 0, 4, 0, 13, 10, 4, 9, 1, 7 },
      { 0, 15, 13, 1, 3, 11, 4, 6, 2 }
    },
    { { 0, 4, 1, 0, 13, 12, 1, 11, 2 },
      { 0, 15, 13, 7, 8, 11, 15, 0, 15 },
      { 0, 1, 14, 6, 6, 2, 14, 4, 11 },
      { 0, 12, 8, 10, 15, 8, 3, 11, 1 }
    },
    { { 0, 13, 8, 9, 14, 4, 10, 2, 8 },
      { 0, 7, 4, 0, 11, 2, 4, 11, 13 },
      { 0, 14, 7, 4, 9, 1, 15, 11, 4 },
      { 0, 8, 10, 13, 0, 12, 2, 13, 14 }
    },
    { { 0, 1, 14, 14, 3, 1, 15, 14, 4 },
      { 0, 4, 7, 9, 5, 12, 2, 7, 8 },
      { 0, 8, 11, 9, 0, 11, 5, 13, 1 },
      { 0, 2, 1, 0, 6, 7, 12, 8, 7 }
    },
    { { 0, 2, 6, 6, 0, 7, 9, 15, 6 },
      { 0, 14, 15, 3, 6, 4, 7, 4, 10 },
      { 0, 13, 10, 8, 12, 10, 2, 12, 9 },
      { 0, 4, 3, 6, 10, 1, 9, 1, 4 }
    },
    { { 0, 15, 11, 3, 6, 10, 2, 0, 15 },
      { 0, 2, 2, 4, 15, 7, 12, 9, 3 },
      { 0, 6, 4, 15, 11, 13, 8, 3, 12 },
      { 0, 9, 15, 9, 1, 14, 5, 4, 10 }
    },
    { { 0, 11, 3, 15, 9, 11, 6, 8, 11 },
      { 0, 13, 8, 6, 0, 13, 9, 1, 7 },
      { 0, 2, 13, 3, 7, 7, 12, 7, 14 },
      { 0, 1, 4, 8, 13, 2, 15, 10, 8 }
    },
    { { 0, 8, 4, 5, 10, 6, 8, 13, 1 },
      { 0, 1, 14, 10, 3, 1, 5, 10, 4 },
      { 0, 11, 1, 0, 13, 8, 3, 14, 2 },
      { 0, 7, 2, 7, 8, 13, 10, 7, 13 }
    },
    { { 0, 3, 9, 1, 1, 8, 0, 3, 10 },
      { 0, 10, 12, 2, 4, 5, 6, 14, 12 },
      { 0, 15, 5, 11, 15, 15, 7, 10, 0 },
      { 0, 5, 11, 4, 9, 6, 11, 9, 15 }
    },
    { { 0, 10, 7, 13, 2, 5, 13, 12, 9 },
      { 0, 6, 0, 8, 7, 0, 1, 3, 5 },
      { 0, 12, 8, 1, 1, 9, 0, 15, 6 },
      { 0, 11, 6, 15, 4, 15, 14, 5, 12 }
    },
    { { 0, 6, 2, 12, 8, 3, 3, 9, 3 },
      { 0, 12, 1, 5, 2, 15, 13, 5, 6 },
      { 0, 9, 12, 2, 3, 12, 4, 6, 10 },
      { 0, 3, 7, 14, 5, 0, 1, 0, 9 }
    },
    { { 0, 12, 13, 7, 5, 15, 4, 7, 14 },
      { 0, 11, 10, 14, 12, 10, 14, 12, 11 },
      { 0, 7, 6, 12, 14, 5, 10, 8, 13 },
      { 0, 14, 12, 3, 11, 9, 7, 15, 0 }
    },
    { { 0, 5, 12, 11, 11, 13, 14, 5, 5 },
      { 0, 9, 6, 12, 1, 3, 0, 2, 0 },
      { 0, 3, 9, 5, 5, 6, 1, 0, 15 },
      { 0, 10, 0, 11, 12, 10, 6, 14, 3 }
    },
    { { 0, 9, 0, 4, 12, 0, 7, 10, 0 },
      { 0, 5, 9, 11, 10, 9, 11, 15, 14 },
      { 0, 10, 3, 10, 2, 3, 13, 5, 3 },
      { 0, 0, 5, 5, 7, 4, 0, 2, 5 }
    },
    { { 0, 0, 5, 2, 4, 14, 5, 6, 12 },
      { 0, 3, 11, 15, 14, 8, 3, 8, 9 },
      { 0, 5, 2, 14, 8, 0, 11, 9, 5 },
      { 0, 6, 14, 2, 2, 5, 8, 3, 6 }
    },
    { { 0, 7, 10, 8, 15, 9, 11, 1, 7 },
      { 0, 8, 5, 1, 9, 6, 8, 6, 2 },
      { 0, 0, 15, 7, 4, 14, 6, 2, 8 },
      { 0, 13, 9, 12, 14, 3, 13, 12, 11 }
    }
  };

  volatile char ibin[ 16 ] = {0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15};
  ndes_great ie;
  unsigned long itmp, ietmp1, ietmp2;
  char iec[ 9 ];
  int irow, icol, iss, l, m;
  int volatile j, jj;
  unsigned long *p;

  p = ndes_bit;
  ie.r = ie.c = ie.l = 0;

  _Pragma( "loopbound min 16 max 16" )
  for ( j = 16, l = 32, m = 48; j >= 1; j--, l--, m-- ) {
    ie.r = ( ie.r << 1 ) | ( p[ iet[ j ] ] & ir ? 1 : 0 );
    ie.c = ( ie.c << 1 ) | ( p[ iet[ l ] ] & ir ? 1 : 0 );
    ie.l = ( ie.l << 1 ) | ( p[ iet[ m ] ] & ir ? 1 : 0 );
  }
  ie.r ^= k.r;
  ie.c ^= k.c;
  ie.l ^= k.l;
  ietmp1 = ( ( unsigned long ) ie.c << 16 ) + ( unsigned long ) ie.r;
  ietmp2 = ( ( unsigned long ) ie.l << 8 ) + ( ( unsigned long ) ie.c >> 8 );

  _Pragma( "loopbound min 4 max 4" )
  for ( j = 1, m = 5; j <= 4; j++, m++ ) {
    iec[ j ] = ietmp1 & 0x3fL;
    iec[ m ] = ietmp2 & 0x3fL;
    ietmp1 >>= 6;
    ietmp2 >>= 6;
  }

  itmp = 0L;

  _Pragma( "loopbound min 8 max 8" )
  for ( jj = 8; jj >= 1; jj-- ) {
    j = iec[ jj ];
    irow = ( ( j & 0x1 ) << 1 ) + ( ( j & 0x20 ) >> 5 );
    icol = ( ( j & 0x2 ) << 2 ) + ( j & 0x4 )
           + ( ( j & 0x8 ) >> 2 ) + ( ( j & 0x10 ) >> 4 );
    iss = is[ icol ][ irow ][ jj ];
    itmp = ( itmp << 4 ) | ibin[ iss ];
  }

  *iout = 0L;
  p = ndes_bit;

  _Pragma( "loopbound min 32 max 32" )
  for ( j = 32; j >= 1; j-- )
    *iout = ( *iout << 1 );
  *iout |= ( p[ ipp[ j ] ] & itmp ? 1 : 0 );
}

unsigned long ndes_getbit( ndes_immense source, int bitno, int nbits )
{
  if ( bitno <= nbits )
    return ndes_bit[ bitno ] & source.r ? 1L : 0L;
  else
    return ndes_bit[ bitno - nbits ] & source.l ? 1L : 0L;
}

void ndes_ks( /*ndes_immense key, */int n, ndes_great *kn )
{
  int i, j, k, l;

  if ( n == 1 || n == 2 || n == 9 || n == 16 ) {
    ndes_icd.r = ( ndes_icd.r | ( ( ndes_icd.r & 1L ) << 28 ) ) >> 1;
    ndes_icd.l = ( ndes_icd.l | ( ( ndes_icd.l & 1L ) << 28 ) ) >> 1;
  } else {
    _Pragma( "loopbound min 2 max 2" )
    for ( i = 1; i <= 2; i++ ) {
      ndes_icd.r = ( ndes_icd.r | ( ( ndes_icd.r & 1L ) << 28 ) ) >> 1;
      ndes_icd.l = ( ndes_icd.l | ( ( ndes_icd.l & 1L ) << 28 ) ) >> 1;
    }
  }

  ( *kn ).r = ( *kn ).c = ( *kn ).l = 0;

  _Pragma( "loopbound min 16 max 16" )
  for ( j = 16, k = 32, l = 48; j >= 1; j--, k--, l-- ) {
    ( *kn ).r = ( *kn ).r << 1;
    ( *kn ).r = ( ( *kn ).r ) | ( unsigned short )
                ndes_getbit( ndes_icd, ndes_ipc2[ j ], 28 );
    ( *kn ).c = ( *kn ).c << 1;
    ( *kn ).c = ( ( *kn ).c ) | ( unsigned short )
                ndes_getbit( ndes_icd, ndes_ipc2[ k ], 28 );
    ( *kn ).l = ( *kn ).l << 1;
    ( *kn ).l = ( ( *kn ).l ) | ( unsigned short )
                ndes_getbit( ndes_icd, ndes_ipc2[ l ], 28 );
  }
}

int ndes_return()
{
  return ( ndes_icd.r + ndes_icd.l  + ( -8390656 ) ) != 0 ;
}

void _Pragma( "entrypoint" ) ndes_main()
{
  ndes_des( ndes_inp, ndes_key, &ndes_newkey, ndes_isw, &ndes_out );
}

/* main function */

int main( void )
{
  ndes_init();
  ndes_main();

  return ( ndes_return() );
}