internal/compar.h

   1 #ifndef INTERNAL_COMPAR_H                                /*-*-C-*-vi:se ft=c:*/
   2 #define INTERNAL_COMPAR_H
   3 /**
   4  * @author     Ruby developers <ruby-core@ruby-lang.org>
   5  * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
   6  *             Permission  is hereby  granted,  to  either redistribute  and/or
   7  *             modify this file, provided that  the conditions mentioned in the
   8  *             file COPYING are met.  Consult the file for details.
   9  * @brief      Internal header for Comparable.
  10  */
  11 #include "internal/basic_operators.h"
  12
  13 #define STRING_P(s) (RB_TYPE_P((s), T_STRING) && CLASS_OF(s) == rb_cString)
  14
  15 #define CMP_OPTIMIZABLE(type) BASIC_OP_UNREDEFINED_P(BOP_CMP, type##_REDEFINED_OP_FLAG)
  16
  17 #define OPTIMIZED_CMP(a, b) \
  18     ((FIXNUM_P(a) && FIXNUM_P(b) && CMP_OPTIMIZABLE(INTEGER)) ? \
  19      (((long)a > (long)b) ? 1 : ((long)a < (long)b) ? -1 : 0) : \
  20      (STRING_P(a) && STRING_P(b) && CMP_OPTIMIZABLE(STRING)) ? \
  21      rb_str_cmp(a, b) : \
  22      (RB_FLOAT_TYPE_P(a) && RB_FLOAT_TYPE_P(b) && CMP_OPTIMIZABLE(FLOAT)) ? \
  23      rb_float_cmp(a, b) : \
  24      rb_cmpint(rb_funcallv(a, id_cmp, 1, &b), a, b))
  25
  26 /* compar.c */
  27 VALUE rb_invcmp(VALUE, VALUE);
  28
  29 #endif /* INTERNAL_COMPAR_H */