2 duration.cc -- implement Duration, Plet,
4 source file of the LilyPond music typesetter
6 (c) 1997--2000 Jan Nieuwenhuizen <janneke@gnu.org>
7 Han-Wen Nienhuys <hanwen@cs.uu.nl>
13 #include "lily-proto.hh"
16 #include "duration.hh"
17 #include "ly-smobs.icc"
22 Duration::compare (Duration const &left, Duration const &right)
24 return Rational::compare (left.length_mom (), right.length_mom ());
31 factor_ = Moment (1,1);
34 Duration::Duration (int l, int d)
38 factor_ = Moment (1,1);
42 Duration::compressed (Rational m) const
50 Duration::length_mom () const
52 Rational mom (1 << abs (durlog_i_));
59 for (int d = dots_i_; d; d--)
71 Duration::str () const
73 String s = to_str (durlog_i_) + to_str ('.', dots_i_);
74 if (factor_ != Moment (1,1))
76 s += "*" + factor_.str ();
82 IMPLEMENT_TYPE_P(Duration, "duration?");
83 IMPLEMENT_UNSMOB(Duration, duration);
86 Duration::mark_smob (SCM )
91 IMPLEMENT_SIMPLE_SMOBS(Duration);
95 Duration::print_smob (SCM s, SCM port, scm_print_state *)
97 Duration *r = (Duration *) gh_cdr (s);
99 scm_puts ("#<Duration ", port);
100 scm_display (gh_str02scm (r->str().ch_C()), port);
101 scm_puts (" >", port);
107 Duration::equal_p (SCM a , SCM b)
109 Duration *p = (Duration *) gh_cdr (a);
110 Duration *q = (Duration *) gh_cdr (b);
112 bool eq = p->dots_i_ == q->dots_i_
113 && p->durlog_i_ == q->durlog_i_
114 && p->factor_ == q->factor_;
116 return eq ? SCM_BOOL_T : SCM_BOOL_F;
119 MAKE_SCHEME_CALLBACK(Duration, less_p, 2);
121 Duration::less_p (SCM p1, SCM p2)
123 Duration *a = unsmob_duration (p1);
124 Duration *b = unsmob_duration (p2);
126 if (compare(*a, *b) < 0 )
134 make_duration (SCM l, SCM d)
136 Duration p( gh_scm2int (l), gh_scm2int (d));
137 return p.smobbed_copy ();
143 scm_make_gsubr ("make-duration", 2, 0, 0, (Scheme_function_unknown)make_duration);
146 ADD_SCM_INIT_FUNC(duration, add_funcs);
149 Duration::smobbed_copy ()const
151 Duration * p = new Duration (*this);
152 return p->smobbed_self ();
156 Duration::duration_log () const
162 Duration::dot_count () const