1 files changed, 50 insertions, 6 deletions
diff --git a/src/elementaryFunctions/atan/testDoubleAtan.c b/src/elementaryFunctions/atan/testDoubleAtan.c
index a22bbed5..bc31f382 100644
--- a/src/elementaryFunctions/atan/testDoubleAtan.c
+++ b/src/elementaryFunctions/atan/testDoubleAtan.c
@@ -27,15 +27,59 @@ void datansTest() {
   printf("datans(-PI/6) = %e\n", datans(-DPI/6));
 }
 
+void zatansTest() {
+ doubleComplex pi_pi = DoubleComplex(DPI, DPI);
+  doubleComplex pi_2_pi_2 = DoubleComplex(DPI/2, DPI/2);
+  doubleComplex pi_2_pi_3 = DoubleComplex(DPI/2, DPI/3);
+  doubleComplex pi_2_pi_4 = DoubleComplex(DPI/2, DPI/4);
+  doubleComplex out;
+
+  printf(">> Double Complex scalar\n");
+  out = zatans(pi_pi);
+  printf("zatans(PI + I*PI) = %e + I * %e\n", zreals(out), zimags(out));
+  out = zatans(pi_2_pi_2);
+  printf("zatans(PI/2 + I*PI/2) = %e + I * %e\n", zreals(out), zimags(out));
+  out = zatans(pi_2_pi_3);
+  printf("zatans(PI/2 + I*PI/3) = %e + I * %e\n", zreals(out), zimags(out));
+  out = zatans(pi_2_pi_4);
+  printf("zatans(PI/2 + I*PI/4) = %e + I * %e\n", zreals(out), zimags(out));
+}
+
+void datanaTest(void) {
+  double out[5];
+  double in[5] = {DPI, DPI/2, DPI/3, DPI/4, DPI/6};
+  int i = 0;
+
+  printf(">> Double Array\n");
+  datana(in, 5, out);
+  for (i = 0 ; i < 5 ; ++i)
+    printf("satana(array) = %f\n", out[i]);
+
+}
+
+void zatanaTest(void) {
+  doubleComplex in[4];
+  doubleComplex out[4];
+  int i = 0;
+
+  in[0] = DoubleComplex(DPI, DPI);
+  in[1] = DoubleComplex(DPI/2, DPI/2);
+  in[2] = DoubleComplex(DPI/2, DPI/3);
+  in[3] = DoubleComplex(DPI/2, DPI/4);
+
+  zatana(in, 4, out);
+  printf(">> Double Complex Array\n");
+  for (i = 0 ; i < 4 ; ++i)
+    printf("zatana(array) = %e + I * %e\n", zreals(out[i]), zimags(out[i]));
+}
+
 int testAtan() {
   printf("\n>>>> Double Arc Tangeant Tests\n");
   datansTest();
-  /* FIXME : Implement some test here ... */
-  /*
-    zatansTest();
-    datanaTest();
-    zatanaTest();
-  */
+  zatansTest();
+  datanaTest();
+  zatanaTest();
+
   return 0;
 }