summaryrefslogtreecommitdiffstats
path: root/tests/Euler.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tests/Euler.cpp')
-rw-r--r--tests/Euler.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/tests/Euler.cpp b/tests/Euler.cpp
index 1741dc8..47b5b55 100644
--- a/tests/Euler.cpp
+++ b/tests/Euler.cpp
@@ -23,11 +23,11 @@
#include <iostream>
#include <iomanip>
-// y' = y (y == C*exp(x))
+// y' = x*y (y == C*exp(x^2/2))
double
f(double x, double y)
{
- return y;
+ return x*y;
}
int
@@ -49,7 +49,7 @@ main()
<< "Iterations: " << integrator.iterations() << std::endl;
double error = std::abs(expected - actual)/std::abs(expected);
- if (error > 0.01 || !std::isfinite(error)) {
+ if (error > 2.3e-2 || !std::isfinite(error)) {
std::cerr << "Error: " << 100.0*error << "%" << std::endl;
return EXIT_FAILURE;
} else {