type.h

#if !defined(AT_CORE_H_INSIDE)
#error "Only <at/core.h> can be included directly."
#endif
#ifndef AT_TYPE_H
#define AT_TYPE_H
#include <stdint.h>
typedef enum{
  AT_SCC_TARJAN,
  AT_SCC_KOSARAJU,
  AT_SCC_DIJKSTRA,
}AtSCCAlgorithm;

typedef enum{
  AT_TOP,
  AT_BOTTOM,
  AT_LEFT,
  AT_RIGHT,
  AT_CENTER,
}AtAlignment;

typedef int8_t (*AtCompareFunc)    (void* data1, void* data2);
typedef int8_t (*AtCompareDataFunc)(void* data1, void* data2, void* user_data);
typedef void   (*AtDataFunc)       (void* data1, void* user_data);

#define INT8_TO_POINTER(i)   ((void*)(int64_t)(i))
#define INT16_TO_POINTER(i)  ((void*)(int64_t)(i))
#define INT32_TO_POINTER(i)  ((void*)(int64_t)(i))
#define INT64_TO_POINTER(i)  ((void*)(int64_t)(i))
#define UINT8_TO_POINTER(i)  ((void*)(uint64_t)(i))
#define UINT16_TO_POINTER(i) ((void*)(uint64_t)(i))
#define UINT32_TO_POINTER(i) ((void*)(uint64_t)(i))
#define UINT64_TO_POINTER(i) ((void*)(uint64_t)(i))

#define POINTER_TO_INT8(i)   ((int8_t)  (int64_t)(i))
#define POINTER_TO_INT16(i)  ((int16_t) (int64_t)(i))
#define POINTER_TO_INT32(i)  ((int32_t) (int64_t)(i))
#define POINTER_TO_INT64(i)  ((int64_t) (int64_t)(i))
#define POINTER_TO_UINT8(i)  ((uint8_t) (uint64_t)(i))
#define POINTER_TO_UINT16(i) ((uint16_t)(uint64_t)(i))
#define POINTER_TO_UINT32(i) ((uint32_t)(uint64_t)(i))
#define POINTER_TO_UINT64(i) ((uint64_t)(uint64_t)(i))

#endif