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Tcl_Alloc(3)		    Tcl Library Procedures		  Tcl_Alloc(3)

______________________________________________________________________________

NAME
       Tcl_Alloc, Tcl_Free, Tcl_Realloc - allocate or free heap memory

SYNOPSIS
       #include <tcl.h>

       char *
       Tcl_Alloc(size)

       Tcl_Free(ptr)

       char *
       Tcl_Realloc(ptr, size)

ARGUMENTS
       int    size    (in)	Size in bytes of the memory block to allocate.

       char   *ptr    (in)	Pointer to memory block to free or realloc.
_________________________________________________________________

DESCRIPTION
       These  procedures provide a platform and compiler independent interface
       for memory allocation.  Programs that need  to  transfer	 ownership  of
       memory  blocks  between Tcl and other modules should use these routines
       rather than the native malloc() and free() routines provided by	the  C
       run-time library.

       Tcl_Alloc  returns a pointer to a block of at least size bytes suitably
       aligned for any use.

       Tcl_Free makes the space referred to by ptr available for further allo‐
       cation.

       Tcl_Realloc  changes  the  size	of the block pointed to by ptr to size
       bytes and returns a pointer to the new block.   The  contents  will  be
       unchanged  up  to  the  lesser  of the new and old sizes.  The returned
       location may be different from ptr.

KEYWORDS
       alloc, allocation, free, malloc, memory, realloc

Tcl				      7.5			  Tcl_Alloc(3)
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