Make ample use of the contextual keyword 'override'.

[ginac.git] / ginac / constant.cpp

diff --git a/ginac/constant.cpp b/ginac/constant.cpp
index a8cda2d9e5ed22276a73b8cd813dc58fc33ca7d2..cf6c4ae1207e1ff0fc843a03aa7c13a7bbbc60eb 100644 (file)
--- a/ginac/constant.cpp
+++ b/ginac/constant.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's constant types and some special constants. */
 
 /*
- *  GiNaC Copyright (C) 1999-2014 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2015 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
@@ -45,7 +45,7 @@ GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(constant, basic,
 
 // public
 
-constant::constant() : ef(0), serial(next_serial++), domain(domain::complex)
+constant::constant() : ef(nullptr), serial(next_serial++), domain(domain::complex)
 {
        setflag(status_flags::evaluated | status_flags::expanded);
 }
@@ -67,7 +67,7 @@ constant::constant(const std::string & initname, evalffunctype efun, const std::
 }
 
 constant::constant(const std::string & initname, const numeric & initnumber, const std::string & texname, unsigned dm)
-  : name(initname), ef(0), number(initnumber), serial(next_serial++), domain(dm)
+  : name(initname), ef(nullptr), number(initnumber), serial(next_serial++), domain(dm)
 {
        if (texname.empty())
                TeX_name = "\\mathrm{" + name + "}";
@@ -150,7 +150,7 @@ bool constant::info(unsigned inf) const
 
 ex constant::evalf(int level) const
 {
-       if (ef!=0) {
+       if (ef!=nullptr) {
                return ef();
        } else {
                return number.evalf();