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complex.h
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#ifndef RBIMPL_INTERN_COMPLEX_H /*-*-C++-*-vi:se ft=cpp:*/ #define RBIMPL_INTERN_COMPLEX_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_cComplex. */ #include "ruby/internal/attr/deprecated.h" #include "ruby/internal/attr/pure.h" #include "ruby/internal/dllexport.h" #include "ruby/internal/value.h" #include "ruby/internal/arithmetic/long.h" /* INT2FIX is here. */ RBIMPL_SYMBOL_EXPORT_BEGIN() /* complex.c */ /** * Identical to rb_complex_new(), except it assumes both arguments are not * instances of ::rb_cComplex. It is thus dangerous for extension libraries. * * @param[in] real Real part, in any numeric except Complex. * @param[in] imag Imaginary part, in any numeric except Complex. * @return An instance of ::rb_cComplex whose value is `real + (imag)i`. */ VALUE rb_complex_raw(VALUE real, VALUE imag); /** * Shorthand of `x+0i`. It practically converts `x` into a Complex of the * identical value. * * @param[in] x Any numeric except Complex. * @return An instance of ::rb_cComplex, whose value is `x + 0i`. */ #define rb_complex_raw1(x) rb_complex_raw((x), INT2FIX(0)) /** @alias{rb_complex_raw} */ #define rb_complex_raw2(x,y) rb_complex_raw((x), (y)) /** * Constructs a Complex, by first multiplying the imaginary part with `1i` then * adds it to the real part. This definition doesn't need both arguments be * real numbers. It can happily combine two instances of ::rb_cComplex (with * rotating the latter one). * * @param[in] real An instance of ::rb_cNumeric. * @param[in] imag Another instance of ::rb_cNumeric. * @return An instance of ::rb_cComplex whose value is `imag * 1i + real`. */ VALUE rb_complex_new(VALUE real, VALUE imag); /** * Shorthand of `x+0i`. It practically converts `x` into a Complex of the * identical value. * * @param[in] x Any numeric value. * @return An instance of ::rb_cComplex, whose value is `x + 0i`. */ #define rb_complex_new1(x) rb_complex_new((x), INT2FIX(0)) /** @alias{rb_complex_new} */ #define rb_complex_new2(x,y) rb_complex_new((x), (y)) /** * Constructs a Complex using polar representations. Unlike rb_complex_new() * it makes no sense to pass non-real instances to this function. * * @param[in] abs Magnitude, in any numeric except Complex. * @param[in] arg Angle, in radians, in any numeric except Complex. * @return An instance of ::rb_cComplex which denotes the given polar * coordinates. */ VALUE rb_complex_new_polar(VALUE abs, VALUE arg); RBIMPL_ATTR_DEPRECATED(("by: rb_complex_new_polar")) /** @old{rb_complex_new_polar} */ VALUE rb_complex_polar(VALUE abs, VALUE arg); RBIMPL_ATTR_PURE() /** * Queries the real part of the passed Complex. * * @param[in] z An instance of ::rb_cComplex. * @return Its real part, which is an instance of ::rb_cNumeric. */ VALUE rb_complex_real(VALUE z); RBIMPL_ATTR_PURE() /** * Queries the imaginary part of the passed Complex. * * @param[in] z An instance of ::rb_cComplex. * @return Its imaginary part, which is an instance of ::rb_cNumeric. */ VALUE rb_complex_imag(VALUE z); /** * Performs addition of the passed two objects. * * @param[in] x An instance of ::rb_cComplex. * @param[in] y Arbitrary ruby object. * @return What `x + y` evaluates to. * @see rb_num_coerce_bin() */ VALUE rb_complex_plus(VALUE x, VALUE y); /** * Performs subtraction of the passed two objects. * * @param[in] x An instance of ::rb_cComplex. * @param[in] y Arbitrary ruby object. * @return What `x - y` evaluates to. * @see rb_num_coerce_bin() */ VALUE rb_complex_minus(VALUE x, VALUE y); /** * Performs multiplication of the passed two objects. * * @param[in] x An instance of ::rb_cComplex. * @param[in] y Arbitrary ruby object. * @return What `x * y` evaluates to. * @see rb_num_coerce_bin() */ VALUE rb_complex_mul(VALUE x, VALUE y); /** * Performs division of the passed two objects. * * @param[in] x An instance of ::rb_cComplex. * @param[in] y Arbitrary ruby object. * @return What `x / y` evaluates to. * @see rb_num_coerce_bin() */ VALUE rb_complex_div(VALUE x, VALUE y); /** * Performs negation of the passed object. * * @param[in] z An instance of ::rb_cComplex. * @return What `-z` evaluates to. */ VALUE rb_complex_uminus(VALUE z); /** * Performs complex conjugation of the passed object. * * @param[in] z An instance of ::rb_cComplex. * @return Its complex conjugate, in ::rb_cComplex. */ VALUE rb_complex_conjugate(VALUE z); /** * Queries the absolute (or the magnitude) of the passed object. * * @param[in] z An instance of ::rb_cComplex. * @return Its magnitude, in ::rb_cFloat. */ VALUE rb_complex_abs(VALUE z); /** * Queries the argument (or the angle) of the passed object. * * @param[in] z An instance of ::rb_cComplex. * @return Its magnitude, in ::rb_cFloat. */ VALUE rb_complex_arg(VALUE z); /** * Performs exponentiation of the passed two objects. * * @param[in] base An instance of ::rb_cComplex. * @param[in] exp Arbitrary ruby object. * @return What `base ** exp` evaluates to. * @see rb_num_coerce_bin() */ VALUE rb_complex_pow(VALUE base, VALUE exp); /** * Identical to rb_complex_new(), except it takes the arguments as C's double * instead of Ruby's object. * * @param[in] real Real part. * @param[in] imag Imaginary part. * @return An instance of ::rb_cComplex whose value is `real + (imag)i`. */ VALUE rb_dbl_complex_new(double real, double imag); /** @alias{rb_complex_plus} */ #define rb_complex_add rb_complex_plus /** @alias{rb_complex_minus} */ #define rb_complex_sub rb_complex_minus /** @alias{rb_complex_uminus} */ #define rb_complex_nagate rb_complex_uminus /** * Converts various values into a Complex. This function accepts: * * - Instances of ::rb_cComplex (taken as-is), * - Instances of ::rb_cNumeric (adds `0i`), * - Instances of ::rb_cString (parses), * - Other objects that respond to `#to_c`. * * It (possibly recursively) applies `#to_c` until both sides become a Complex * value, then computes `imag * 1i + real`. * * As a special case, passing ::RUBY_Qundef to `imag` is the same as passing * `RB_INT2NUM(0)`. * * @param[in] real Real part (see above). * @param[in] imag Imaginary part (see above). * @exception rb_eTypeError Passed something not described above. * @return An instance of ::rb_cComplex whose value is `1i * imag + real`. * * @internal * * This was the implementation of `Kernel#Complex` before, but they diverged. */ VALUE rb_Complex(VALUE real, VALUE imag); /** * Shorthand of `x+0i`. It practically converts `x` into a Complex of the * identical value. * * @param[in] x ::rb_cNumeric, ::rb_cString, or something that responds to * `#to_c`. * @return An instance of ::rb_cComplex, whose value is `x + 0i`. */ #define rb_Complex1(x) rb_Complex((x), INT2FIX(0)) /** @alias{rb_Complex} */ #define rb_Complex2(x,y) rb_Complex((x), (y)) RBIMPL_SYMBOL_EXPORT_END() #endif /* RBIMPL_INTERN_COMPLEX_H */