/* Libart_LGPL - library of basic graphic primitives
 * Copyright (C) 1998 Raph Levien
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/* Simple macros to set up storage allocation and basic types for libart
   functions. */

#ifndef __ART_MISC_H__
#define __ART_MISC_H__

#include <stdlib.h> /* for malloc, etc.  */
#include <math.h>   /* for M_PI, M_SQRT2 */

/* The art_config.h file is automatically generated by
   gen_art_config.c and contains definitions of
   ART_SIZEOF_{CHAR,SHORT,INT,LONG} and art_u{8,16,32}. */
#ifdef LIBART_COMPILATION
#include "art_config.h"
#else
#include <libart_lgpl/art_config.h>
#endif

/* These aren't, strictly speaking, configuration macros, but they're
   damn handy to have around, and may be worth playing with for
   debugging. */
#define art_new(type, n) ((type *)art_alloc ((n) * sizeof(type)))

#define art_renew(p, type, n) ((type *)art_realloc (p, (n) * sizeof(type)))

/* This one must be used carefully - in particular, p and max should
   be variables. They can also be pstruct->el lvalues. */
#define art_expand(p, type, max) do { if(max) { p = art_renew (p, type, max <<= 1); } else { max = 1; p = art_new(type, 1); } } while (0)

typedef int art_boolean;
#define ART_FALSE 0
#define ART_TRUE 1

/* define pi */
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif  /*  M_PI  */

#ifndef M_SQRT2
#define M_SQRT2         1.41421356237309504880  /* sqrt(2) */
#endif  /* M_SQRT2 */

/* Provide macros to feature the GCC function attribute.
 */
#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4))
#define ART_GNUC_PRINTF( format_idx, arg_idx )    \
  __attribute__((format (printf, format_idx, arg_idx)))
#define ART_GNUC_NORETURN                         \
  __attribute__((noreturn))
#else   /* !__GNUC__ */
#define ART_GNUC_PRINTF( format_idx, arg_idx )
#define ART_GNUC_NORETURN
#endif  /* !__GNUC__ */

#ifdef __cplusplus
extern "C" {
#endif


/* Define art_alloc etc. as function and *not* as macros to ensure
   that the same allocator gets used when using these from outside of
   libart:
*/
/* #define art_alloc malloc */
/* #define art_free free */
/* #define art_realloc realloc */
void * art_alloc(size_t size);
void art_free(void *ptr);
void *art_realloc(void*ptr, size_t size);

void ART_GNUC_NORETURN
art_die (const char *fmt, ...) ART_GNUC_PRINTF (1, 2);

void
art_warn (const char *fmt, ...) ART_GNUC_PRINTF (1, 2);

void
art_dprint (const char *fmt, ...) ART_GNUC_PRINTF (1, 2);

#ifdef __cplusplus
}
#endif

#define ART_USE_NEW_INTERSECTOR

#endif /* __ART_MISC_H__ */
