gd_macros.h

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#ifndef GD_COMMON_MACROS_H
#define GD_COMMON_MACROS_H

#define DEG_PER_RAD 57.29577950560105
#define RAD_PER_DEG (1.0 / DEG_PER_RAD)

#define ABS(val) (((val) < 0 ? (-(val)) : (val)))
#define SQ(val) ((val) * (val))
#define ALIGN(VAL_, ALIGNMENT_) (((VAL_) + ((ALIGNMENT_) - 1)) & ~((ALIGNMENT_) - 1))

#endif /* GD_COMMON_MACROS_H */