[BUGFIX] Fix crash in parser.

[ginac.git] / check / exam_pseries.cpp

diff --git a/check/exam_pseries.cpp b/check/exam_pseries.cpp
index 052868edb27d9c41e15cc8bee15c9ecda8bdac59..c2669c422df43878a011a41bcb25c4bb15dc2580 100644 (file)
--- a/check/exam_pseries.cpp
+++ b/check/exam_pseries.cpp
@@ -3,7 +3,7 @@
  *  Series expansion test (Laurent and Taylor series). */
 
 /*
- *  GiNaC Copyright (C) 1999-2014 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
@@ -141,6 +141,10 @@ static unsigned exam_series1()
        d = pow(a, b) + (pow(a, b)*b/a)*x + (pow(a, b)*b*b/a/a/2 - pow(a, b)*b/a/a/2)*pow(x, 2) + Order(pow(x, 3));
        result += check_series(e, 0, d, 3);
 
+       e = a * (1 / (x * sin(x)) - sin(x) / x);
+       d = a * pow(x, -2) + Order(pow(x, -1));
+       result += check_series(e, 0, d, -1);
+
        return result;
 }
 
@@ -386,6 +390,24 @@ static unsigned exam_series14()
        return result;
 }
 
+// Test expansion of powers of polynomials.
+static unsigned exam_series15()
+{
+       unsigned result = 0;
+
+       ex e = pow(x + pow(x,2), 2);
+
+       result += check_series(e, 0, Order(1), 0);
+       result += check_series(e, 0, Order(x), 1);
+       result += check_series(e, 0, Order(pow(x,2)), 2);
+       result += check_series(e, 0, pow(x,2) + Order(pow(x,3)), 3);
+       result += check_series(e, 0, pow(x,2) + 2*pow(x,3) + Order(pow(x,4)), 4);
+       result += check_series(e, 0, pow(x,2) + 2*pow(x,3) + pow(x,4), 5);
+       result += check_series(e, 0, pow(x,2) + 2*pow(x,3) + pow(x,4), 6);
+
+       return result;
+}
+
 unsigned exam_pseries()
 {
        unsigned result = 0;
@@ -406,6 +428,7 @@ unsigned exam_pseries()
        result += exam_series12();  cout << '.' << flush;
        result += exam_series13();  cout << '.' << flush;
        result += exam_series14();  cout << '.' << flush;
+       result += exam_series15();  cout << '.' << flush;
        
        return result;
 }