* Exam some simple square free factorizations.

diff --git a/check/exam_misc.cpp b/check/exam_misc.cpp
index c9872a93284bce8659586a99ba2afc4d52fc9bba..412f5d94122b41ac3b9c7581130db3ad6256cc8e 100644 (file)
--- a/check/exam_misc.cpp
+++ b/check/exam_misc.cpp
@@ -86,6 +86,49 @@ static unsigned exam_expand_power(void)
        return result;
 }
 
        return result;
 }
 

+static unsigned exam_sqrfree(void)
+{
+       unsigned result = 0;
+       symbol x("x"), y("y");
+       ex e1, e2;
+       
+       e1 = (1+x)*pow((2+x),2)*pow((3+x),3)*pow((4+x),4);
+       e2 = sqrfree(expand(e1),lst(x));
+       if (e1 != e2) {
+               clog << "sqrfree(expand(" << e1 << ")) erroneously returned "
+                    << e2 << endl;
+               ++result;
+       }
+       
+       e1 = (x+y)*pow((x+2*y),2)*pow((x+3*y),3)*pow((x+4*y),4);
+       e2 = sqrfree(expand(e1));
+       if (e1 != e2) {
+               clog << "sqrfree(expand(" << e1 << ")) erroneously returned "
+                    << e2 << endl;
+               ++result;
+       }
+       e2 = sqrfree(expand(e1),lst(x));
+       if (e1 != e2) {
+               clog << "sqrfree(expand(" << e1 << "),[x]) erroneously returned "
+                    << e2 << endl;
+               ++result;
+       }
+       e2 = sqrfree(expand(e1),lst(y));
+       if (e1 != e2) {
+               clog << "sqrfree(expand(" << e1 << "),[y]) erroneously returned "
+                    << e2 << endl;
+               ++result;
+       }
+       e2 = sqrfree(expand(e1),lst(x,y));
+       if (e1 != e2) {
+               clog << "sqrfree(expand(" << e1 << "),[x,y]) erroneously returned "
+                    << e2 << endl;
+               ++result;
+       }
+       
+       return result;
+}
+

 unsigned exam_misc(void)
 {
        unsigned result = 0;
 unsigned exam_misc(void)
 {
        unsigned result = 0;


@@ -96,6 +139,7 @@ unsigned exam_misc(void)
        result += exam_expand_subs();  cout << '.' << flush;
        result += exam_expand_subs2();  cout << '.' << flush;
        result += exam_expand_power(); cout << '.' << flush;
        result += exam_expand_subs();  cout << '.' << flush;
        result += exam_expand_subs2();  cout << '.' << flush;
        result += exam_expand_power(); cout << '.' << flush;

+       result += exam_sqrfree(); cout << '.' << flush;

        
        if (!result) {
                cout << " passed " << endl;
        
        if (!result) {
                cout << " passed " << endl;