- Use newer fig2dev which supports eps (old ones are broken now!)

[ginac.git] / ginac / expair.h

diff --git a/ginac/expair.h b/ginac/expair.h
index 320de73eb78186786177728ed379d472be177aae..b9006848d1953253a88df2ff0fe1759d437b186e 100644 (file)
--- a/ginac/expair.h
+++ b/ginac/expair.h
@@ -3,7 +3,7 @@
  *  Definition of expression pairs (building blocks of expairseq). */
 
 /*
- *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2000 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
@@ -26,7 +26,9 @@
 #include <ginac/ex.h>
 #include <ginac/numeric.h>
 
+#ifndef NO_GINAC_NAMESPACE
 namespace GiNaC {
+#endif // ndef NO_GINAC_NAMESPACE
 
 /** A pair of expressions.
  *  This similar to, but slightly extended STL's pair<> but we need to account
@@ -57,7 +59,7 @@ public:
     {
         GINAC_ASSERT(is_ex_exactly_of_type(coeff,numeric));
         return is_ex_exactly_of_type(rest,numeric) &&
-               (ex_to_numeric(coeff).compare(numONE())==0);
+               (coeff.is_equal(ex(1)));
     }
 
     bool is_equal(expair const & other) const
@@ -99,14 +101,14 @@ public:
         */
         if (is_ex_exactly_of_type(rest,numeric) &&
             is_ex_exactly_of_type(other.rest,numeric)) {
-            if (ex_to_numeric(coeff).compare(numONE())==0) {
-                if (ex_to_numeric(other.coeff).compare(numONE())==0) {
+            if (coeff.is_equal(ex(1))) {
+                if ((other.coeff).is_equal(ex(1))) {
                     // both have coeff 1: compare rests
                     return rest.compare(other.rest)<0;
                 }
                 // only this has coeff 1: >
                 return false;
-            } else if (ex_to_numeric(other.coeff).compare(numONE())==0) {
+            } else if ((other.coeff).is_equal(ex(1))) {
                 // only other has coeff 1: <
                 return true;
             }
@@ -120,14 +122,14 @@ public:
     {
         if (is_ex_exactly_of_type(rest,numeric) &&
             is_ex_exactly_of_type(other.rest,numeric)) {
-            if (ex_to_numeric(coeff).compare(numONE())==0) {
-                if (ex_to_numeric(other.coeff).compare(numONE())==0) {
+            if ((coeff).is_equal(ex(1))) {
+                if ((other.coeff).is_equal(ex(1))) {
                     // both have coeff 1: compare rests
                     return rest.compare(other.rest);
                 }
                 // only this has coeff 1: >
                 return 1;
-            } else if (ex_to_numeric(other.coeff).compare(numONE())==0) {
+            } else if ((other.coeff).is_equal(ex(1))) {
                 // only other has coeff 1: <
                 return -1;
             }
@@ -197,6 +199,8 @@ public:
     }
 };
 
+#ifndef NO_GINAC_NAMESPACE
 } // namespace GiNaC
+#endif // ndef NO_GINAC_NAMESPACE
 
 #endif // ndef __GINAC_EXPAIR_H__