X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Frational.cc;h=54ac55bdaf8cdc04b75a9a099e6e895afc7a237e;hb=5eb0dcad3749583e8e182feab07b07d16046cbb7;hp=b2b7c898ee5f2a4491194c05d558e2d593c3f2e0;hpb=a192db4f077c3f819eea4156eb72c3385a2ffc2a;p=lilypond.git

diff --git a/flower/rational.cc b/flower/rational.cc
index b2b7c898ee..54ac55bdaf 100644
--- a/flower/rational.cc
+++ b/flower/rational.cc
@@ -3,7 +3,7 @@
   
   source file of the Flower Library
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 #include <math.h>
 #include <stdlib.h>
@@ -17,12 +17,15 @@ Rational::operator double () const
   return (double)sign_ * num_ / den_;
 }
 
+#ifdef STREAM_SUPPORT
 ostream &
 operator << (ostream &o, Rational r)
 {
-  o <<  r.str ();
+  o <<  r.string ();
   return o;
 }
+#endif
+
 
 Rational
 Rational::trunc_rat () const
@@ -63,11 +66,13 @@ int gcd (int a, int b)
   return b;
 }
 
+#if 0
 static
 int lcm (int a, int b)
 {
   return abs (a*b / gcd (a,b));
 }
+#endif
 
 void
 Rational::set_infinite (int s)
@@ -138,7 +143,7 @@ Rational::compare (Rational const &r, Rational const &s)
     return -1;
   else if (r.sign_ > s.sign_)
     return 1;
-  else if (r.infty_b ())
+  else if (r.is_infinity ())
     return 0;
   else if (r.sign_ == 0)
     return 0;
@@ -164,9 +169,9 @@ Rational::operator %= (Rational r)
 Rational &
 Rational::operator += (Rational r)
 {
-  if (infty_b ())
+  if (is_infinity ())
     ;
-  else if (r.infty_b ())
+  else if (r.is_infinity ())
     {
       *this = r;
     }
@@ -237,7 +242,7 @@ Rational &
 Rational::operator *= (Rational r)
 {
   sign_ *= ::sign (r.sign_);
-  if (r.infty_b ())
+  if (r.is_infinity ())
     {	
       sign_ = sign () * 2;
       goto exit_func;
@@ -271,27 +276,18 @@ Rational::operator -= (Rational r)
   return (*this += r);
 }
 
-/*
-  be paranoid about overiding libg++ stuff
- */
-Rational &
-Rational::operator = (Rational const &r)
-{
-  copy (r);
-  return *this;
-}
-
 String
-Rational::str () const
+Rational::to_string () const
 {
-  if (infty_b ())
+  if (is_infinity ())
     {
       String s (sign_ > 0 ? "" : "-" );
       return String (s + "infinity");
     }
-  String s = to_str (num ());
+
+  String s = ::to_string (num ());
   if (den () != 1 && num ())
-    s += "/" + to_str (den ());
+    s += "/" + ::to_string (den ());
   return s;
 }
 
@@ -306,3 +302,9 @@ sign (Rational r)
 {
   return r.sign ();
 }
+
+bool
+Rational::is_infinity () const
+{
+  return sign_ == 2 || sign_ == -2;
+}