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| | #ifndef ext_help_h
#define ext_help_h
#define RAISE_NOT_NULL(T) if(T == NULL) rb_raise(rb_eArgError, "NULL found for " # T " when shouldn't be.");
#define DATA_GET(from,type,name) Data_Get_Struct(from,type,name); RAISE_NOT_NULL(name);
#define REQUIRE_TYPE(V, T) if(TYPE(V) != T) rb_raise(rb_eTypeError, "Wrong argument type for " # V " required " # T);
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#ifdef DEBUG
#define TRACE() fprintf(stderr, "> %s:%d:%s\n", __FILE__, __LINE__, __FUNCTION__)
#else
#define TRACE()
#endif
#endif
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