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According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
60 lines
2.7 KiB
C++
60 lines
2.7 KiB
C++
#ifndef RUBY3_INTERN_COMPLEX_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RUBY3_INTERN_COMPLEX_H
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/**
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Public APIs related to ::rb_cComplex.
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*/
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#include "ruby/3/dllexport.h"
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#include "ruby/3/value.h"
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#include "ruby/3/arithmetic/long.h" /* INT2FIX is here. */
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RUBY3_SYMBOL_EXPORT_BEGIN()
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/* complex.c */
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VALUE rb_complex_raw(VALUE, VALUE);
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#define rb_complex_raw1(x) rb_complex_raw((x), INT2FIX(0))
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#define rb_complex_raw2(x,y) rb_complex_raw((x), (y))
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VALUE rb_complex_new(VALUE, VALUE);
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#define rb_complex_new1(x) rb_complex_new((x), INT2FIX(0))
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#define rb_complex_new2(x,y) rb_complex_new((x), (y))
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VALUE rb_complex_new_polar(VALUE abs, VALUE arg);
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DEPRECATED_BY(rb_complex_new_polar, VALUE rb_complex_polar(VALUE abs, VALUE arg));
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VALUE rb_complex_real(VALUE z);
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VALUE rb_complex_imag(VALUE z);
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VALUE rb_complex_plus(VALUE x, VALUE y);
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VALUE rb_complex_minus(VALUE x, VALUE y);
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VALUE rb_complex_mul(VALUE x, VALUE y);
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VALUE rb_complex_div(VALUE x, VALUE y);
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VALUE rb_complex_uminus(VALUE z);
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VALUE rb_complex_conjugate(VALUE z);
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VALUE rb_complex_abs(VALUE z);
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VALUE rb_complex_arg(VALUE z);
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VALUE rb_complex_pow(VALUE base, VALUE exp);
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VALUE rb_dbl_complex_new(double real, double imag);
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#define rb_complex_add rb_complex_plus
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#define rb_complex_sub rb_complex_minus
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#define rb_complex_nagate rb_complex_uminus
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VALUE rb_Complex(VALUE, VALUE);
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#define rb_Complex1(x) rb_Complex((x), INT2FIX(0))
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#define rb_Complex2(x,y) rb_Complex((x), (y))
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RUBY3_SYMBOL_EXPORT_END()
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#endif /* RUBY3_INTERN_COMPLEX_H */
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