Disabled external gits

cs440-acg/ext/openexr/IlmBase/HalfTest/testArithmetic.cpp

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+#include <testArithmetic.h>
+#include "half.h"
+#include <iostream>
+#include <assert.h>
+
+using namespace std;
+
+
+void
+testArithmetic ()
+{
+    cout << "basic arithmetic operations:\n";
+
+    float f1 (1);
+    float f2 (2);
+    half  h1 (3);
+    half  h2 (4);
+
+    cout << "f1 = " << f1 << ", "
+	    "f2 = " << f2 << ", "
+	    "h1 = " << h1 << ", "
+	    "h2 = " << h2 << endl;
+
+    h1 = f1 + f2;
+    assert (h1 == 3);
+
+    cout << "h1 = f1 + f2: " << h1 << endl;
+
+    h2 += f1;
+    assert (h2 == 5);
+
+    cout << "h2 += f1: " << h2 << endl;
+
+    h2 = h1 + h2;
+    assert (h2 == 8);
+
+    cout << "h2 = h1 + h2: " << h2 << endl;
+
+    h2 += h1;
+    assert (h2 == 11);
+
+    cout << "h2 += h1: " << h2 << endl;
+
+    h1 = h2;
+    assert (h1 == 11);
+
+    cout << "h1 = h2: " << h1 << endl;
+
+    h2 = -h1;
+    assert (h2 == -11);
+
+    cout << "h2 = -h1: " << h2 << endl;
+
+    cout << "ok\n\n" << flush;
+}