/*   Copyright 2012 The Code cavern

This file is part of the MPIR Library.

The MPIR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or (at
your option) any later version.

The MPIR Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
License for more details.

You should have received a copy of the GNU Lesser General Public License
along with the MPIR Library; see the file COPYING.LIB.  If not, write
to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.

*/

#include "mpir.h"
#include "gmp-impl.h"

mp_limb_t	mpn_addadd_n(mp_ptr t,mp_srcptr x,mp_srcptr y,mp_srcptr z,mp_size_t n)
{mp_limb_t ret;
 mp_srcptr a=x,b=y,c=z;

ASSERT(n>0);
ASSERT_MPN(x,n);ASSERT_MPN(y,n);ASSERT_MPN(z,n);//ASSERT_SPACE(t,n);
ASSERT(MPN_SAME_OR_SEPARATE_P(t,x,n));
ASSERT(MPN_SAME_OR_SEPARATE_P(t,y,n));
ASSERT(MPN_SAME_OR_SEPARATE_P(t,z,n));
if(t==x)
  {if(t==y)
     {if(t==z)
        {
         #ifdef HAVE_NATIVE_mpn_addlsh1_n
         return mpn_addlsh1_n(t,x,y,n);
         #else
         return mpn_mul_1(t,x,n,3);
         #endif  
        }
     }
   else
     {MP_SRCPTR_SWAP(b,c);}
  }
else
  {MP_SRCPTR_SWAP(a,c);if(t==y)MP_SRCPTR_SWAP(a,b);}
ret=mpn_add_n(t,a,b,n);return ret+mpn_add_n(t,t,c,n);}


/*
mp_limb_t	mpn_addadd_n(mp_ptr t,mp_srcptr x,mp_srcptr y,mp_srcptr z,mp_size_t n)
{mp_limb_t ret;

ASSERT(n>0);
ASSERT_MPN(x,n);ASSERT_MPN(y,n);ASSERT_MPN(z,n);//ASSERT_SPACE(t,n);
ASSERT(MPN_SAME_OR_SEPARATE_P(t,x,n));
ASSERT(MPN_SAME_OR_SEPARATE_P(t,y,n));
ASSERT(MPN_SAME_OR_SEPARATE_P(t,z,n));
if(t==x && t==y && t==z)
  {
  #ifdef HAVE_NATIVE_mpn_addlsh1_n
  return mpn_addlsh1_n(t,x,y,n);
  #else
  return mpn_mul_1(t,x,n,3);
  #endif  
  }
if(t==x && t==y)
  {ret=mpn_add_n(t,x,y,n);
   ret+=mpn_add_n(t,t,z,n);
   return ret;
  }
if(t==x && t==z)
  {ret=mpn_add_n(t,x,z,n);
   ret+=mpn_add_n(t,t,y,n);
   return ret;
  }
if(t==y && t==z)
  {ret=mpn_add_n(t,y,z,n);
   ret+=mpn_add_n(t,t,x,n);
   return ret;
  }
if(t==x)
  {ret=mpn_add_n(t,x,y,n);
   ret+=mpn_add_n(t,t,z,n);
   return ret;
  }
if(t==y)
  {ret=mpn_add_n(t,y,x,n);
   ret+=mpn_add_n(t,t,z,n);
   return ret;
  }
if(t==z)
  {ret=mpn_add_n(t,z,x,n);
   ret+=mpn_add_n(t,t,y,n);
   return ret;
  }
ret=mpn_add_n(t,z,x,n);
ret+=mpn_add_n(t,t,y,n);
return ret;
}
*/