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files >> //opt/alt/ruby31/include/ruby/internal/intern/compar.h
#ifndef RBIMPL_INTERN_COMPAR_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_INTERN_COMPAR_H /** * @file * @author Ruby developers <ruby-core@ruby-lang.org> * @copyright This file is a part of the programming language Ruby. * Permission is hereby granted, to either redistribute and/or * modify this file, provided that the conditions mentioned in the * file COPYING are met. Consult the file for details. * @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are * implementation details. Don't take them as canon. They could * rapidly appear then vanish. The name (path) of this header file * is also an implementation detail. Do not expect it to persist * at the place it is now. Developers are free to move it anywhere * anytime at will. * @note To ruby-core: remember that this header can be possibly * recursively included from extension libraries written in C++. * Do not expect for instance `__VA_ARGS__` is always available. * We assume C99 for ruby itself but we don't assume languages of * extension libraries. They could be written in C++98. * @brief Public APIs related to ::rb_mComparable. */ #include "ruby/internal/attr/cold.h" #include "ruby/internal/attr/noreturn.h" #include "ruby/internal/dllexport.h" #include "ruby/internal/value.h" RBIMPL_SYMBOL_EXPORT_BEGIN() /* bignum.c */ /** * Canonicalises the passed `val`, which is the return value of `a <=> b`, into * C's `{-1, 0, 1}`. This can be handy when you implement a callback function * to pass to `qsort(3)` etc. * * @param[in] val Return value of a space ship operator. * @param[in] a Comparison LHS. * @param[in] b Comparison RHS. * @exception rb_eArgError `a` and `b` are not comparable each other. * @retval -1 `val` is less than zero. * @retval 0 `val` is equal to zero. * @retval 1 `val` is greater than zero. */ int rb_cmpint(VALUE val, VALUE a, VALUE b); /* compar.c */ RBIMPL_ATTR_COLD() RBIMPL_ATTR_NORETURN() /** * Raises "comparison failed" error. * * @param[in] a Comparison LHS. * @param[in] b Comparison RHS. * @exception rb_eArgError `a` and `b` are not comparable each other. */ void rb_cmperr(VALUE a, VALUE b); RBIMPL_SYMBOL_EXPORT_END() #endif /* RBIMPL_INTERN_COMPAR_H */
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