* Use pkg-config for detecting CLN, advertise it in the manual and drop

[ginac.git] / ginac / constant.cpp

diff --git a/ginac/constant.cpp b/ginac/constant.cpp
index cff955a9488bcb5b09298b4dc513a656a6dc1a3e..7f5142348a915308b84af80e901af6237ad9fd2e 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) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2007 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
@@ -142,7 +142,9 @@ bool constant::info(unsigned inf) const
        if (inf == info_flags::polynomial)
                return true;
        if (inf == info_flags::real)
-               return domain == domain::real;
+               return domain==domain::real || domain==domain::positive ;
+       if (inf==info_flags::positive || inf==info_flags::nonnegative)
+               return domain == domain::positive;
        else
                return inherited::info(inf);
 }
@@ -164,21 +166,21 @@ bool constant::is_polynomial(const ex & var) const
 
 ex constant::conjugate() const
 {
-       if ( domain == domain::real )
+       if ( domain==domain::real || domain==domain::positive )
                return *this;
        return conjugate_function(*this).hold();
 }
 
 ex constant::real_part() const
 {
-       if ( domain == domain::real )
+       if ( domain==domain::real || domain==domain::positive )
                return *this;
        return real_part_function(*this).hold();
 }
 
 ex constant::imag_part() const
 {
-       if ( domain == domain::real )
+       if ( domain==domain::real || domain==domain::positive )
                return 0;
        return imag_part_function(*this).hold();
 }
@@ -244,13 +246,13 @@ unsigned constant::next_serial = 0;
 //////////
 
 /**  Pi. (3.14159...)  Diverts straight into CLN for evalf(). */
-const constant Pi("Pi", PiEvalf, "\\pi", domain::real);
+const constant Pi("Pi", PiEvalf, "\\pi", domain::positive);
 
 /** Euler's constant. (0.57721...)  Sometimes called Euler-Mascheroni constant.
  *  Diverts straight into CLN for evalf(). */
-const constant Euler("Euler", EulerEvalf, "\\gamma_E", domain::real);
+const constant Euler("Euler", EulerEvalf, "\\gamma_E", domain::positive);
 
 /** Catalan's constant. (0.91597...)  Diverts straight into CLN for evalf(). */
-const constant Catalan("Catalan", CatalanEvalf, "G", domain::real);
+const constant Catalan("Catalan", CatalanEvalf, "G", domain::positive);
 
 } // namespace GiNaC