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      1 /*---------------------------------------------------------------------------*
      2  *  memmove.h  *
      3  *                                                                           *
      4  *  Copyright 2007, 2008 Nuance Communciations, Inc.                               *
      5  *                                                                           *
      6  *  Licensed under the Apache License, Version 2.0 (the 'License');          *
      7  *  you may not use this file except in compliance with the License.         *
      8  *                                                                           *
      9  *  You may obtain a copy of the License at                                  *
     10  *      http://www.apache.org/licenses/LICENSE-2.0                           *
     11  *                                                                           *
     12  *  Unless required by applicable law or agreed to in writing, software      *
     13  *  distributed under the License is distributed on an 'AS IS' BASIS,        *
     14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
     15  *  See the License for the specific language governing permissions and      *
     16  *  limitations under the License.                                           *
     17  *                                                                           *
     18  *---------------------------------------------------------------------------*/
     19 
     20 #ifndef _inl_memmove_
     21 #define _inl_memmove_
     22 
     23 #if USE_SYSTEM_MEMMOVE
     24 #define MEMMOVE(S,D,N,Z) memmove(S,D,(N)*(Z))
     25 #else
     26 #define MEMMOVE memmove_inline
     27 
     28 static void *memmove_inline(void *dest, const void *src, size_t count,
     29                             size_t size);
     30 
     31 static void *memmove_inline(void *dest, const void *src, size_t count,
     32                             size_t size)
     33 /*
     34 **  A more efficient implementation of memmove
     35 */
     36 {
     37   ASSERT(dest);
     38   ASSERT(src);
     39 
     40   while (count-- > 0)
     41   {
     42     memcpy(dest, src, size);
     43     dest = (void *)(((char *)dest) + size);
     44     src = (void *)(((char *)src) + size);
     45   }
     46   return (dest);  /* TODO: fix return */
     47 }
     48 #endif
     49 #endif
     50