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#ifndef INCLUDED_OS_MACROS_H
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#define INCLUDED_OS_MACROS_H
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#ifndef INCLUDED_STDIO_H
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#define INCLUDED_STDIO_H
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#include <stdio.h>
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#endif /*INCLUDED_STDIO_H*/
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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#define OS_STR_HELPER(x) #x
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#define OS_STR(x) OS_STR_HELPER(x)
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/* BITS */
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#define OS_BIT(n) (1<<(n))
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#define OS_BIT_SET(x,p) ((x)|(1<<(p)))
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#define OS_BIT_CLEAR(x,p) ((x)&(~(1<<(p))))
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#define OS_BIT_GET(x,p) (((x)>>(p))&1)
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#define OS_BIT_TOGGLE(x,p) ((x)^(1<<(p)))
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/* ARRAYS */
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#define OS_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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#define OS_SET(d, n, v) do{ int i_, n_; \
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for ( n_ = (n), i_ = 0; n_ > 0; --n_, ++i_) \
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(d)[i_] = (v); } while(0)
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#define OS_ZERO(d, n) OS_SET(d, n, 0)
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#define OS_COLUMNS(S,E) ( (E) - (S) + 1 )
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#define OS_IS_ARRAY(a) ((void *)&a == (void *)a)
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/* DEBUG */
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#ifndef NDEBUG
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extern void about(void);
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#define OS_ASSERT(expr, ...) \
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do { \
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if (!(expr)) { \
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if(sizeof(#__VA_ARGS__) > 1){ \
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fprintf(stderr, "[FAILED] Exp: %s - ", #expr); \
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fprintf(stderr, "Msg: " __VA_ARGS__); \
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fprintf(stderr, " - "__FILE__":%d - " __DATE__ " " __TIME__"\n", __LINE__); \
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}else{ \
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fprintf(stderr, "[FAILED] Exp: %s - "__FILE__":%d - " __DATE__ " " __TIME__ "\n", #expr, __LINE__); \
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} \
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about(); \
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} \
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} while (0)
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#define OS_SAFE_ASSERT(expr, ...) \
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do { \
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if (!(expr)) { \
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if(sizeof(#__VA_ARGS__) > 1){ \
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fprintf(stderr, "[FAILED] Exp: %s - ", #expr); \
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fprintf(stderr, "Msg: " __VA_ARGS__); \
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fprintf(stderr, " - "__FILE__":%d - " __DATE__ " " __TIME__"\n", __LINE__); \
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}else{ \
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fprintf(stderr, "[FAILED] Exp: %s - "__FILE__":%d - " __DATE__ " " __TIME__ "\n", #expr, __LINE__); \
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} \
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} \
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} while (0)
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#else
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#define OS_ASSERT(expr, ...)
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#define OS_SAFE_ASSERT(expr, ...)
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#endif
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/* ALIGN */
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#define OS_ALIGN_UP(x, align) (((x) + ((align) - 1)) & ~((align) - 1))
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#define OS_ALIGN_DOWN(x, align) ((x) & ~((align) - 1))
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/* MATH */
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#define OS_MIN(x, y) (((x) < (y)) ? (x) : (y))
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#define OS_MAX(x, y) (((x) > (y)) ? (x) : (y))
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#define OS_IS_NAN(x) ((x) != (x))
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#define OS_COMPARE(x, y) (((x) > (y)) - ((x) < (y)))
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#define OS_SIGN(x) OS_COMPARE(x, 0)
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#define OS_IS_ODD( num ) ((num) & 1)
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#define OS_IS_EVEN( num ) (!OS_IS_ODD( (num) ))
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#define OS_IS_BETWEEN(n,L,H) ((unsigned char)((n) >= (L) && (n) <= (H)))
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#define OS_CONSTRAIN(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
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#define OS_IS_POWER_OF_2(x) (((x) & ((x)-1))==0)
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/* UNIQUE */
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#define OS_CONCAT_INNER(a, b) a ## b
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#define OS_CONCAT(a, b) OS_CONCAT_INNER(a, b)
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#define OS_UNIQUE(prefix) OS_CONCAT(prefix, __LINE__)
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/* DEFER, useful to init and clean a block of scoped code */
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/* Please see https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2895.htm for a more in depth guide explaining non-standard cleanup functions */
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#define OS_DEFER2(head, tail, i) for(int i=(head,0);!i;tail,i++)
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#define OS_DEFER(head, tail) OS_DEFER2(head, tail, OS_UNIQUE(__deferVar__))
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/* STMT, useful for creating multiple statements macros */
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#define OS_STMT( stuff ) do { stuff } while (0)
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/* ONCE */
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#define OS_ONCE2(stmts, i) {static int i = 1;\
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if(i){stmts\
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i = 0;}}
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#define OS_ONCE(stmts) OS_ONCE2(stmts, OS_UNIQUE(__onceVar__))
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/* C in C++ Environment */
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#ifdef __cplusplus
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# define OS_EXTERN_C_START extern "C" {
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# define OS_EXTERN_C_END }
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#else
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# define OS_EXTERN_C_START
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# define OS_EXTERN_C_END
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#endif
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/* MARKS */
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#define OS_PRIVILEGE
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#define OS_NONE_PRIVILEGE
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#define OS_OPTIONAL
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#define OS_UNUSED(x) ((void)(x))
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#ifndef OS_I
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#define OS_I volatile const
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#endif
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#ifndef OS_O
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#define OS_O volatile
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#endif
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#ifndef OS_IO
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#define OS_IO volatile
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#endif
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#define OS_OFFSETOF(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
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#define OS_CONTAINER_OF(ptr, type, member) ((type *)( (unsigned char *)(ptr) - OS_OFFSETOF(type,member) ))
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#define OS_BLOCK_DEF(__Name, nBytes, nCount) static uint8_t __Name[nBytes * nCount]
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#endif /*INCLUDED_OS_MACROS_H*/
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