X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fexpair.h;h=218eb481ac8b64a56a2631c82d0cdf4e4a2c2d62;hp=aa4a72cdd2f45b6552d5909dda4f32a4ed7ac913;hb=HEAD;hpb=1602530f716ba1d425a0667b897182b99c374823

diff --git a/ginac/expair.h b/ginac/expair.h
index aa4a72cd..452a6f2c 100644
--- a/ginac/expair.h
+++ b/ginac/expair.h
@@ -3,7 +3,7 @@
  *  Definition of expression pairs (building blocks of expairseq). */
 
 /*
- *  GiNaC Copyright (C) 1999-2009 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2024 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -92,7 +92,7 @@ public:
 };
 
 /** Function object for insertion into third argument of STL's sort() etc. */
-struct expair_is_less : public std::binary_function<expair, expair, bool> {
+struct expair_is_less {
 	bool operator()(const expair &lh, const expair &rh) const { return lh.is_less(rh); }
 };
 
@@ -100,21 +100,17 @@ struct expair_is_less : public std::binary_function<expair, expair, bool> {
  *  into third argument of STL's sort().  Note that this does not define a
  *  strict weak ordering since for any symbol x we have neither 3*x<2*x or
  *  2*x<3*x.  Handle with care! */
-struct expair_rest_is_less : public std::binary_function<expair, expair, bool> {
+struct expair_rest_is_less {
 	bool operator()(const expair &lh, const expair &rh) const { return (lh.rest.compare(rh.rest)<0); }
 };
 
-struct expair_swap : public std::binary_function<expair, expair, void> {
+struct expair_swap {
 	void operator()(expair &lh, expair &rh) const { lh.swap(rh); }
 };
 
 inline void swap(expair & e1, expair & e2)
 { e1.swap(e2); }
 
-// This makes STL algorithms use the more efficient swap operation for ex objects
-inline void iter_swap(std::vector<expair>::iterator i1, std::vector<expair>::iterator i2)
-{ i1->swap(*i2); }
-
 } // namespace GiNaC
 
 #endif // ndef GINAC_EXPAIR_H