compar.h

#ifndef INTERNAL_COMPAR_H                                /*-*-C-*-vi:se ft=c:*/
#define INTERNAL_COMPAR_H
#include "internal/basic_operators.h"
 
#define STRING_P(s) (RB_TYPE_P((s), T_STRING) && CLASS_OF(s) == rb_cString)
 
#define CMP_OPTIMIZABLE(type) BASIC_OP_UNREDEFINED_P(BOP_CMP, type##_REDEFINED_OP_FLAG)
 
#define OPTIMIZED_CMP(a, b) \
    ((FIXNUM_P(a) && FIXNUM_P(b) && CMP_OPTIMIZABLE(INTEGER)) ? \
     (((long)a > (long)b) ? 1 : ((long)a < (long)b) ? -1 : 0) : \
     (STRING_P(a) && STRING_P(b) && CMP_OPTIMIZABLE(STRING)) ? \
     rb_str_cmp(a, b) : \
     (RB_FLOAT_TYPE_P(a) && RB_FLOAT_TYPE_P(b) && CMP_OPTIMIZABLE(FLOAT)) ? \
     rb_float_cmp(a, b) : \
     rb_cmpint(rb_funcallv(a, id_cmp, 1, &b), a, b))
 
/* compar.c */
VALUE rb_invcmp(VALUE, VALUE);
NORETURN(void rb_cmperr_reason(VALUE, VALUE, const char*));
 
#endif /* INTERNAL_COMPAR_H */