1 files changed, 30 insertions, 1 deletions

diff --git a/src/test.c b/src/test.c
index 2645982..20a66ec 100644
--- a/src/test.c
+++ b/src/test.c
@@ -823,7 +823,7 @@ err:
 
 int test_std(char *err)
 {
-    /* Tests the mean() function. */
+    /* Tests the std() function. */
     size_t i, j;
     double x[100];
     double sigma, expected, mu;
@@ -851,6 +851,34 @@ err:
     return 1;
 }
 
+int test_log_norm(char *err)
+{
+    /* Tests the log_norm() function. */
+    size_t i;
+    double x, mu, sigma, logp, expected;
+
+    init_genrand(0);
+
+    for (i = 0; i < 100; i++) {
+        x = randn();
+        mu = randn();
+        sigma = genrand_real2() + 1.0;
+
+        logp = log_norm(x,mu,sigma);
+        expected = log(norm(x,mu,sigma));
+
+        if (!isclose(logp, expected, 0, 1e-9)) {
+            sprintf(err, "log_norm(%.2g,%.2g,%.2g) returned %.5g, but expected %.5g", x, mu, sigma, logp, expected);
+            goto err;
+        }
+    }
+
+    return 0;
+
+err:
+    return 1;
+}
+
 struct tests {
     testFunction *test;
     char *name;
@@ -877,6 +905,7 @@ struct tests {
     {test_proton_get_dEdx, "test_proton_get_dEdx"},
     {test_proton_get_range, "test_proton_get_range"},
     {test_proton_get_energy, "test_proton_get_energy"},
+    {test_log_norm, "test_log_norm"},
 };
 
 int main(int argc, char **argv)