#ifndef _AL_MACROS_H
#define _AL_MACROS_H

#define AL_PASTER_EVALUATOR(X, Y) X##_##Y
#define AL_PASTER(X, Y) AL_PASTER_EVALUATOR(X, Y)

#if defined LIKELY || defined UNLIKELY
#error "Conflicting definitions for LIKELY/UNLIKELY"
#endif

#ifdef AL_HAVE_BUILTIN_EXPECT
#define LIKELY(x) __builtin_expect((x), 1)
#else
#define LIKELY(x) x
#endif

#ifdef AL_HAVE_BUILTIN_EXPECT
#define UNLIKELY(x) __builtin_expect((x), 0)
#else
#define UNLIKELY(x) x
#endif

#if defined MIN || defined MAX || defined CLAMP || defined SWAP || defined ARRAY_SIZE || defined STR || defined XSTR || defined BOOLSTR
#error "Conflicting definitions for common macros"
#endif

#ifdef AL_HAVE_GNU_EXTENSIONS
#define MIN(a, b)              \
    ({                         \
        __typeof__(a) ac = a;  \
        __typeof__(b) bc = b;  \
        (void)(&ac == &bc);    \
        (ac < bc) ? ac : bc;   \
    })
#define MAX(a, b)              \
    ({                         \
        __typeof__(a) ac = a;  \
        __typeof__(b) bc = b;  \
        (void)(&ac == &bc);    \
        (ac > bc) ? ac : bc;   \
    })
#define CLAMP(n, lo, hi) MIN(hi, MAX(lo, n))
#else
/*
#error "MIN/MAX/CLAMP should not be used in this mode as they\
 differ in behavior without support for statement expressions"
*/
// Compatible/Pedantic min/max.
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define CLAMP(n, lo, hi) MIN(hi, MAX(lo, n))
#endif

#define SWAP(a, b) \
    do { \
        __typeof__(a) tmp = a; \
        a = b; \
        b = tmp; \
    } while (0)

#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))

#define STR(s) #s
#define XSTR(s) STR(s)

#define BOOLSTR(b) ((b) ? "true" : "false")

#if defined KB || defined MB || defined GB || defined TB
#error "Conflicting definitions for byte size macros"
#endif

#define KB(n) ((n) << 10)
#define MB(n) ((n) << 20)
#define GB(n) ((n) << 30)
#define TB(n) (((u64)n) << 40)

//#if defined __counted_by || defined __sized_by
#if defined __sized_by
#error "Conflicting definitions for common attributes"
#endif

// https://github.com/google/double-conversion/pull/131/files
#ifdef __has_attribute
#define AL_HAS_ATTRIBUTE(x) __has_attribute(x)
#else
#define AL_HAS_ATTRIBUTE(x) 0
#endif

//#if AL_HAS_ATTRIBUTE(__counted_by__)
//#define __counted_by(member) __attribute__((__counted_by__(member)))
//#else
//#define __counted_by(member)
//#endif

#if AL_HAS_ATTRIBUTE(__sized_by__)
#define __sized_by(member) __attribute__((__sized_by__(member)))
#else
#define __sized_by(member)
#endif

#ifdef _MSC_VER
#define __thread __declspec(thread)
#endif

#endif // _AL_MACROS_H