array_alloc.h

/* GDCHART 0.11.2dev  ARRAY_ALLOC.H  Mar 2002 */
/* Copyright Bruce Verderaime 2002-2004 */
/* Contributed in part or whole by Don Fasen and Darren Kent */

#ifndef _ARRAY_ALLOC_H
#define _ARRAY_ALLOC_H

/* ----- no dynamic auto array, need to mallocate space ----- */
#if !defined (__GNUC__)  || defined (__STRICT_ANSI__)

#include <stdlib.h>

float   **allocate_array_float( int nrs, int ncs );
char    **allocate_array_char( int nrs, int ncs );
int     **allocate_array_int( int nrs, int ncs );

#define CREATE_ARRAY1( arr, type, nels )        type *arr = (type*)malloc( (nels) * sizeof(type) )
                                                /* array2 can't do ptr (*) types */
#define CREATE_ARRAY2( arr, type, nrs, ncs )    type **arr = allocate_array_##type( nrs, ncs )

#define FREE_ARRAY1( arr )                      if( arr ) { free( (void*)arr ); arr = NULL; } else
#define FREE_ARRAY2( arr )                      if( arr )                       \
                                                    {                           \
                                                    if( arr[0] )                \
                                                        free( (void*)arr[0] );  \
                                                    free( (void*)arr );         \
                                                    arr = NULL;                 \
                                                    }                           \
                                                else

/* ----- avoid alloc, let the stack do the work ----- */
#else

#define CREATE_ARRAY1( arr, type, nels )        type arr[ nels ]
#define CREATE_ARRAY2( arr, type, nrs, ncs )    type arr[ nrs ][ ncs ]
#define FREE_ARRAY1( arr )
#define FREE_ARRAY2( arr )

#endif

#endif /*_ARRAY_ALLOC_H */