summaryrefslogtreecommitdiffstats
path: root/tests
diff options
context:
space:
mode:
authorTavian Barnes <tavianator@gmail.com>2010-10-11 18:08:26 -0400
committerTavian Barnes <tavianator@gmail.com>2010-10-11 18:08:26 -0400
commit48d5a656c996e112fae70c3a209417b9d0982fbf (patch)
tree797a0fcbcbcfc67be3eac92f8260d38428a20bba /tests
parent1f9a9ef19af95bd8433274e4640f1b8b23f56d46 (diff)
downloadvz-48d5a656c996e112fae70c3a209417b9d0982fbf.tar.xz
Add a simple vector class.
Diffstat (limited to 'tests')
-rw-r--r--tests/Makefile.am2
-rw-r--r--tests/Vector.cpp40
2 files changed, 42 insertions, 0 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1cd184d..745562c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -28,6 +28,7 @@ check_PROGRAMS = Euler-test \
RKF45-test \
CK45-test \
DP45-test \
+ Vector-test \
EquationSystem-test
TESTS = $(check_PROGRAMS)
@@ -40,4 +41,5 @@ BS23_test_SOURCES = BS23.cpp
RKF45_test_SOURCES = RKF45.cpp
CK45_test_SOURCES = CK45.cpp
DP45_test_SOURCES = DP45.cpp
+Vector_test_SOURCES = Vector.cpp
EquationSystem_test_SOURCES = EquationSystem.cpp
diff --git a/tests/Vector.cpp b/tests/Vector.cpp
new file mode 100644
index 0000000..7f53352
--- /dev/null
+++ b/tests/Vector.cpp
@@ -0,0 +1,40 @@
+#include "vZ.hpp"
+#include <cmath>
+#include <cstdlib>
+#include <iostream>
+#include <iomanip>
+
+// y' = -y (y == C*exp(-t))
+vZ::Vector<3>
+f(double t, vZ::Vector<3> y)
+{
+ return -y;
+}
+
+int
+main()
+{
+ vZ::GenericDP45Integrator<vZ::Vector<3> > integrator(f);
+ integrator.tol(1e-6).y(vZ::Vector<3>(1.0, 1.0, 1.0)).x(0.0).h(0.06);
+
+ integrator.integrate(2.0);
+
+ double actual = integrator.y().x();
+ double expected = std::exp(-2.0);
+
+ std::cout << std::setprecision(10)
+ << "Numerical: " << actual << std::endl
+ << "Expected: " << expected << std::endl
+ << "h: " << integrator.h() << std::endl
+ << "Iterations: " << integrator.iterations() << std::endl
+ << "Rejections: " << integrator.rejections() << std::endl;
+
+ double error = std::fabs(expected - actual)/expected;
+ if (error > 1.5e-6) {
+ std::cerr << "Error: " << 100.0*error << "%" << std::endl;
+ return EXIT_FAILURE;
+ } else {
+ std::cout << "Error: " << 100.0*error << "%" << std::endl;
+ return EXIT_SUCCESS;
+ }
+}