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#ifndef _AL_MACROS_H
#define _AL_MACROS_H
#define AL_MACRO_WRAP do {
#define AL_MACRO_END } while(0)
#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 MAX || defined MIN || defined CLAMP || defined SWAP || defined ARRAY_SIZE || defined BOOLSTR
#error "Conflicting definitions for common macros"
#endif
#ifdef AL_HAVE_GNU_EXTENSIONS
#define MIN(a, b) \
({ \
__typeof__(a) _a = a; \
__typeof__(b) _b = b; \
(void)(&_a == &_b); \
_a < _b ? _a : _b; \
})
#define MAX(a, b) \
({ \
__typeof__(a) _a = a; \
__typeof__(b) _b = b; \
(void)(&_a == &_b); \
_a > _b ? _a : _b; \
})
#define CLAMP(n, lo, hi) MIN(hi, MAX(lo, n))
#else
// Compatible/Pedantic min/max.
/*
#error "MIN/MAX/CLAMP should not be used in this mode as they\
differ in behavior without support for statement expressions"
*/
#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) \
AL_MACRO_WRAP \
{ \
__typeof__(a) tmp = a; \
a = b; \
b = tmp; \
} AL_MACRO_END
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#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
#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
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