X-Git-Url: https://ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fexpair.h;h=b9006848d1953253a88df2ff0fe1759d437b186e;hb=ed62b717aa0383e08b4a2642cd923498898e1a18;hp=b130465b67ee245a5e145e6346f19ee49901d36b;hpb=afdd7fa8c6c0a587f7c80789198551383e8beb7b;p=ginac.git

diff --git a/ginac/expair.h b/ginac/expair.h
index b130465b..b9006848 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 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
@@ -59,7 +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
@@ -101,14 +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;
             }
@@ -122,14 +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;
             }