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93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
#ifndef INTERNAL_RATIONAL_H /*-*-C-*-vi:se ft=c:*/
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#define INTERNAL_RATIONAL_H
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/**
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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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* @brief Internal header for Rational.
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*/
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#include "ruby/internal/config.h" /* for HAVE_LIBGMP */
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#include "ruby/ruby.h" /* for struct RBasic */
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#include "internal/numeric.h" /* for INT_POSITIVE_P */
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#include "ruby_assert.h" /* for assert */
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struct RRational {
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struct RBasic basic;
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VALUE num;
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VALUE den;
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};
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#define RRATIONAL(obj) ((struct RRational *)(obj))
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/* rational.c */
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VALUE rb_rational_canonicalize(VALUE x);
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VALUE rb_rational_uminus(VALUE self);
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VALUE rb_rational_plus(VALUE self, VALUE other);
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VALUE rb_rational_minus(VALUE self, VALUE other);
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VALUE rb_rational_mul(VALUE self, VALUE other);
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VALUE rb_rational_div(VALUE self, VALUE other);
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VALUE rb_rational_fdiv(VALUE self, VALUE other);
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VALUE rb_lcm(VALUE x, VALUE y);
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VALUE rb_rational_reciprocal(VALUE x);
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VALUE rb_cstr_to_rat(const char *, int);
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VALUE rb_rational_hash(VALUE self);
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VALUE rb_rational_abs(VALUE self);
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VALUE rb_rational_cmp(VALUE self, VALUE other);
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VALUE rb_rational_pow(VALUE self, VALUE other);
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VALUE rb_rational_floor(VALUE self, int ndigits);
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VALUE rb_numeric_quo(VALUE x, VALUE y);
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VALUE rb_flo_round_by_rational(VALUE num, int ndigits, enum ruby_num_rounding_mode mode);
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VALUE rb_flo_ceil_by_rational(VALUE num, int ndigits);
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VALUE rb_flo_floor_by_rational(VALUE num, int ndigits);
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VALUE rb_float_numerator(VALUE x);
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VALUE rb_float_denominator(VALUE x);
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static inline void RATIONAL_SET_NUM(VALUE r, VALUE n);
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static inline void RATIONAL_SET_DEN(VALUE r, VALUE d);
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RUBY_SYMBOL_EXPORT_BEGIN
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/* rational.c (export) */
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VALUE rb_gcd(VALUE x, VALUE y);
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VALUE rb_gcd_normal(VALUE self, VALUE other);
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#if defined(HAVE_LIBGMP) && defined(HAVE_GMP_H)
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VALUE rb_gcd_gmp(VALUE x, VALUE y);
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#endif
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RUBY_SYMBOL_EXPORT_END
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static inline void
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RATIONAL_SET_NUM(VALUE r, VALUE n)
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{
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assert(RB_INTEGER_TYPE_P(n));
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RB_OBJ_WRITE(r, &RRATIONAL(r)->num, n);
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}
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static inline void
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RATIONAL_SET_DEN(VALUE r, VALUE d)
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{
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assert(RB_INTEGER_TYPE_P(d));
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assert(INT_POSITIVE_P(d));
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RB_OBJ_WRITE(r, &RRATIONAL(r)->den, d);
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}
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inline static bool
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f_zero_p(VALUE x)
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{
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if (RB_INTEGER_TYPE_P(x)) {
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return FIXNUM_ZERO_P(x);
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}
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else if (RB_FLOAT_TYPE_P(x)) {
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return FLOAT_ZERO_P(x);
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}
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else if (RB_TYPE_P(x, T_RATIONAL)) {
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const VALUE num = RRATIONAL(x)->num;
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return FIXNUM_ZERO_P(num);
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}
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return rb_equal(x, INT2FIX(0)) != 0;
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}
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#define f_nonzero_p(x) (!f_zero_p(x))
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#endif /* INTERNAL_RATIONAL_H */
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