#include "exams.h"
+#include <sstream>
+
/* Simple and maybe somewhat pointless consistency tests of assorted tests and
* conversions. */
static unsigned exam_numeric1(void)
return result;
}
+/* This test checks whether the numeric output/parsing routines are
+ consistent. */
+static unsigned exam_numeric6(void)
+{
+ unsigned result = 0;
+
+ symbol sym("sym");
+ vector<ex> test_numbers;
+ test_numbers.push_back(numeric(0)); // zero
+ test_numbers.push_back(numeric(1)); // one
+ test_numbers.push_back(numeric(-1)); // minus one
+ test_numbers.push_back(numeric(42)); // positive integer
+ test_numbers.push_back(numeric(-42)); // negative integer
+ test_numbers.push_back(numeric(14,3)); // positive rational
+ test_numbers.push_back(numeric(-14,3)); // negative rational
+ test_numbers.push_back(numeric(3.141)); // positive decimal
+ test_numbers.push_back(numeric(-3.141)); // negative decimal
+ test_numbers.push_back(numeric(0.1974)); // positive decimal, leading zero
+ test_numbers.push_back(numeric(-0.1974)); // negative decimal, leading zero
+ test_numbers.push_back(sym); // symbol
+
+ for (vector<ex>::const_iterator br=test_numbers.begin(); br<test_numbers.end(); ++br) {
+ for (vector<ex>::const_iterator bi=test_numbers.begin(); bi<test_numbers.end(); ++bi) {
+
+ for (vector<ex>::const_iterator er=test_numbers.begin(); er<test_numbers.end(); ++er) {
+ for (vector<ex>::const_iterator ei=test_numbers.begin(); ei<test_numbers.end(); ++ei) {
+
+ // Construct expression, don't test invalid ones
+ ex base = (*br) + (*bi)*I, exponent = (*er) + (*ei)*I, x;
+ try {
+ x = pow(base, exponent);
+ } catch (...) {
+ continue;
+ }
+
+ // Print to string
+ std::ostringstream s;
+ s << x;
+
+ // Read back expression from string
+ string x_as_string = s.str();
+ ex x_again(x_as_string, lst(sym));
+
+ // They should be equal
+ if (!x_again.is_equal(x)) {
+ clog << x << " was read back as " << x_again << endl;
+ ++result;
+ }
+ }
+ }
+ }
+ }
+
+ return result;
+}
+
unsigned exam_numeric(void)
{
unsigned result = 0;
result += exam_numeric3(); cout << '.' << flush;
result += exam_numeric4(); cout << '.' << flush;
result += exam_numeric5(); cout << '.' << flush;
+ result += exam_numeric6(); cout << '.' << flush;
if (!result) {
cout << " passed " << endl;