lsup_rdf/include/core.h

#ifndef _LSUP_CORE_H
#define _LSUP_CORE_H

#include <ctype.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef DEBUG
#define DEBUG_TEST 1
#else
#define DEBUG_TEST 0
#endif
#define STR "%s\n"
#define TRACE(fmt, ...) \
        do {\
            if (DEBUG_TEST) \
                fprintf(stderr, "%s:%d:%s(): " fmt "\n", \
                        __FILE__,  __LINE__, __func__, __VA_ARGS__); \
        } while (0)

#define LIKELY(x)       __builtin_expect(!!(x), true)
#define UNLIKELY(x)     __builtin_expect(!!(x), false)
// TODO Handle memory errors better.
#define CRITICAL(exp)   if (UNLIKELY(((exp) == NULL))) { abort(); }

// NOTE This may change in the future, e.g. if a different key size is to
// be forced.
typedef size_t LSUP_Key;
typedef LSUP_Key LSUP_DoubleKey[2];
typedef LSUP_Key LSUP_TripleKey[3];
typedef LSUP_Key LSUP_QuadKey[4];


// "NULL" key, a value that is never user-provided. Used to mark special
// values (e.g. deleted records).
#define NULL_KEY 0
// Value of first key inserted in an empty term database.
#define FIRST_KEY 1
// "NULL" triple, a value that is never user-provided. Used to fill deleted
// triples in a keyset.
extern LSUP_TripleKey NULL_TRP;

// Don't use MIN and MAX macros: see
// https://dustri.org/b/min-and-max-macro-considered-harmful.html
inline int min(int x, int y) { return x < y ? x : y; }

inline int max(int x, int y) { return x > y ? x : y; }

#endif