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#pragma once

#include "platform.h"

#if defined _unix_
    #define LOCSLASH_C '/' 
    #define LOCSLASH_S "/" 
#else
    #define LOCSLASH_C '\\' 
    #define LOCSLASH_S "\\" 
#endif // _unix_

#if defined(__INTEL_COMPILER) && defined(__cplusplus) 
    #include <new> 
#endif 
 
// low and high parts of integers
#if !defined(_win_)
    #include <sys/param.h> 
#endif
 
#if defined(BSD) || defined(_android_)

    #if defined(BSD) 
        #include <machine/endian.h> 
    #endif 

    #if defined(_android_) 
        #include <endian.h> 
    #endif 

    #if (BYTE_ORDER == LITTLE_ENDIAN) 
        #define _little_endian_ 
    #elif (BYTE_ORDER == BIG_ENDIAN) 
        #define _big_endian_ 
    #else 
        #error unknown endian not supported 
    #endif 

#elif (defined(_sun_) && !defined(__i386__)) || defined(_hpux_) || defined(WHATEVER_THAT_HAS_BIG_ENDIAN) 
    #define _big_endian_ 
#else 
    #define _little_endian_ 
#endif 

// alignment
#if (defined(_sun_) && !defined(__i386__)) || defined(_hpux_) || defined(__alpha__) || defined(__ia64__) || defined(WHATEVER_THAT_NEEDS_ALIGNING_QUADS) 
    #define _must_align8_ 
#endif

#if (defined(_sun_) && !defined(__i386__)) || defined(_hpux_) || defined(__alpha__) || defined(__ia64__) || defined(WHATEVER_THAT_NEEDS_ALIGNING_LONGS) 
    #define _must_align4_ 
#endif

#if (defined(_sun_) && !defined(__i386__)) || defined(_hpux_) || defined(__alpha__) || defined(__ia64__) || defined(WHATEVER_THAT_NEEDS_ALIGNING_SHORTS) 
    #define _must_align2_ 
#endif

#if defined(__GNUC__)
    #define alias_hack __attribute__((__may_alias__)) 
#endif

#ifndef alias_hack
    #define alias_hack 
#endif

#include "types.h" 
 
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
    #define PRAGMA(x) _Pragma(#x) 
    #define RCSID(idstr) PRAGMA(comment(exestr, idstr)) 
#else
    #define RCSID(idstr) static const char rcsid[] = idstr 
#endif

#include "compiler.h" 

#ifdef _win_
    #include <malloc.h> 
#elif defined(_sun_)
    #include <alloca.h> 
#endif

#ifdef NDEBUG
    #define Y_IF_DEBUG(X) 
    #ifdef __cplusplus
constexpr bool Y_IS_DEBUG_BUILD = false;
    #endif
#else
    #define Y_IF_DEBUG(X) X 
    #ifdef __cplusplus
constexpr bool Y_IS_DEBUG_BUILD = true;
    #endif
#endif

/**
 * @def Y_ARRAY_SIZE
 *
 * This macro is needed to get number of elements in a statically allocated fixed size array. The
 * expression is a compile-time constant and therefore can be used in compile time computations.
 *
 * @code
 * enum ENumbers {
 *     EN_ONE,
 *     EN_TWO,
 *     EN_SIZE
 * }
 *
 * const char* NAMES[] = {
 *     "one",
 *     "two"
 * }
 *
 * static_assert(Y_ARRAY_SIZE(NAMES) == EN_SIZE, "you should define `NAME` for each enumeration");
 * @endcode
 *
 * This macro also catches type errors. If you see a compiler error like "warning: division by zero
 * is undefined" when using `Y_ARRAY_SIZE` then you are probably giving it a pointer.
 *
 * Since all of our code is expected to work on a 64 bit platform where pointers are 8 bytes we may
 * falsefully accept pointers to types of sizes that are divisors of 8 (1, 2, 4 and 8).
 */
#if defined(__cplusplus) 
    #include <util/generic/array_size.h> 
#else 
    #undef Y_ARRAY_SIZE 
    #define Y_ARRAY_SIZE(arr) \ 
        ((sizeof(arr) / sizeof((arr)[0])) / static_cast<size_t>(!(sizeof(arr) % sizeof((arr)[0])))) 
#endif 
 
#undef Y_ARRAY_BEGIN
#define Y_ARRAY_BEGIN(arr) (arr)

#undef Y_ARRAY_END
#define Y_ARRAY_END(arr) ((arr) + Y_ARRAY_SIZE(arr))

/**
 * Concatenates two symbols, even if one of them is itself a macro.
 */
#define Y_CAT(X, Y) Y_CAT_I(X, Y)
#define Y_CAT_I(X, Y) Y_CAT_II(X, Y)
#define Y_CAT_II(X, Y) X##Y

#define Y_STRINGIZE(X) UTIL_PRIVATE_STRINGIZE_AUX(X)
#define UTIL_PRIVATE_STRINGIZE_AUX(X) #X

#if defined(__COUNTER__) 
    #define Y_GENERATE_UNIQUE_ID(N) Y_CAT(N, __COUNTER__) 
#endif 
 
#if !defined(Y_GENERATE_UNIQUE_ID)
    #define Y_GENERATE_UNIQUE_ID(N) Y_CAT(N, __LINE__) 
#endif 

#define NPOS ((size_t)-1)