xue@11: /*
xue@11:     Harmonic sinusoidal modelling and tools
xue@11: 
xue@11:     C++ code package for harmonic sinusoidal modelling and relevant signal processing.
xue@11:     Centre for Digital Music, Queen Mary, University of London.
xue@11:     This file copyright 2011 Wen Xue.
xue@11: 
xue@11:     This program is free software; you can redistribute it and/or
xue@11:     modify it under the terms of the GNU General Public License as
xue@11:     published by the Free Software Foundation; either version 2 of the
xue@11:     License, or (at your option) any later version.
xue@11: */
xue@1: //---------------------------------------------------------------------------
xue@1: 
xue@1: 
xue@1: #include <memory.h>
xue@1: #include <stdlib.h>
xue@1: #include "align8.h"
xue@1: 
xue@1: //---------------------------------------------------------------------------
xue@1: /*
xue@1:   function malloc8: 8-byte (64-bit) aligned memory allocation.
xue@1: 
xue@1:   Returns pointer to a memory block of $size starting at an address divisible by 8.
xue@1: */
xue@1: void* malloc8(unsigned size)
xue@1: {
Chris@4: #if (!defined(__SIZEOF_POINTER__) || (__SIZEOF_POINTER__ == 4))
xue@1:   char *buffer, *result;
xue@1:   buffer=(char*)malloc(size+8+sizeof(void*));
xue@1:   if(!buffer) return(NULL);
xue@1:   char* tmp=&buffer[sizeof(void*)];
xue@1:   result=&((char*)((unsigned)tmp&0xFFFFFFF8))[8];
xue@1:   ((void**)result)[-1]=buffer;
xue@1:   return(result);
Chris@4: #else
Chris@4:   return malloc(size);
Chris@4: #endif
xue@1: }//malloc8
xue@1: 
xue@1: /*
xue@1:   function free8: deallocation for malloc8()
xue@1: 
xue@1:   No return value.
xue@1: */
xue@1: void free8(void* buffer8)
xue@1: {
Chris@4: #if (!defined(__SIZEOF_POINTER__) || (__SIZEOF_POINTER__ == 4))
Chris@4:     if (buffer8) free(((void**)buffer8)[-1]);
Chris@4: #else 
Chris@4:     free(buffer8);
Chris@4: #endif
xue@1: }//free8
Chris@4: