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util.h (173B)

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#ifndef UTIL_H_
#define UTIL_H_

#define min(x, y) ((x) < (y) ? (x) : (y))

#define max(x, y) ((x) > (y) ? (x) : (y))

#define sign(x) ((x) > 0 ? 1 : -1)

#endif // UTIL_H_