X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Frational.cc;h=a6f82d826e9185fdbab3250388d667d1cce46167;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=cf1c9850bf3cfe68ec16b983b23238eae60279d2;hpb=74930b635951419c12227e94b83e265aca5dd371;p=lilypond.git diff --git a/flower/rational.cc b/flower/rational.cc index cf1c9850bf..a6f82d826e 100644 --- a/flower/rational.cc +++ b/flower/rational.cc @@ -1,7 +1,7 @@ /* This file is part of LilyPond, the GNU music typesetter. - Copyright (C) 1997--2010 Han-Wen Nienhuys + Copyright (C) 1997--2015 Han-Wen Nienhuys LilyPond is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -42,7 +42,6 @@ Rational::to_double () const return 0.0; } - #ifdef STREAM_SUPPORT ostream & operator << (ostream &o, Rational r) @@ -61,7 +60,7 @@ Rational::abs () const Rational Rational::trunc_rat () const { - if (is_infinity()) + if (is_infinity ()) return *this; return Rational ((num_ - (num_ % den_)) * sign_, den_); } @@ -101,7 +100,6 @@ Rational::Rational (int n) den_ = 1; } - void Rational::set_infinite (int s) { @@ -133,7 +131,6 @@ Rational::mod_rat (Rational div) const return r; } - /* copy & paste from scm_gcd (GUILE). */ @@ -151,36 +148,35 @@ gcd (I64 u, I64 v) I64 t; /* Determine a common factor 2^k */ while (!(1 & (u | v))) - { - k <<= 1; - u >>= 1; - v >>= 1; - } + { + k <<= 1; + u >>= 1; + v >>= 1; + } /* Now, any factor 2^n can be eliminated */ if (u & 1) - t = -v; + t = -v; else - { - t = u; - b3: - t = t >> 1; - } + { + t = u; +b3: + t = t >> 1; + } if (!(1 & t)) - goto b3; + goto b3; if (t > 0) - u = t; + u = t; else - v = -t; + v = -t; t = u - v; if (t != 0) - goto b3; + goto b3; result = u * k; } return result; } - void Rational::normalize () { @@ -276,20 +272,20 @@ Rational::Rational (double x) const int FACT = 1 << 20; /* - Thanks to Afie for this too simple idea. + Thanks to Afie for this too simple idea. - do not blindly substitute by libg++ code, since that uses - arbitrary-size integers. The rationals would overflow too - easily. + do not blindly substitute by libg++ code, since that uses + arbitrary-size integers. The rationals would overflow too + easily. */ num_ = (U64) (mantissa * FACT); den_ = (U64) FACT; normalize (); if (expt < 0) - den_ <<= -expt; + den_ <<= -expt; else - num_ <<= expt; + num_ <<= expt; normalize (); } else @@ -323,7 +319,7 @@ Rational::operator *= (Rational r) den_ *= r.den_; normalize (); - exit_func: +exit_func: return *this; } @@ -365,7 +361,7 @@ Rational::to_string () const int Rational::to_int () const { - return (int)(num () / den ()); + return (int) (num () / den ()); } int