Disabled external gits

2022-04-07 18:46:57 +02:00
parent 88cb3426ad
commit 15e7120d6d
5316 changed files with 4563444 additions and 6 deletions
--- a/cs440-acg/ext/openexr/IlmBase/ImathTest/testRandom.cpp
+++ b/cs440-acg/ext/openexr/IlmBase/ImathTest/testRandom.cpp
@@ -0,0 +1,256 @@
+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// *       Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// *       Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// *       Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+
+#include <testRandom.h>
+#include "ImathRandom.h"
+#include "ImathVec.h"
+#include "ImathFun.h"
+#include <iostream>
+#include <iomanip>
+#include <assert.h>
+
+
+using namespace std;
+using IMATH_INTERNAL_NAMESPACE::abs;
+
+namespace {
+
+void
+testErand48 ()
+{
+    //
+    // Our implementation of erand48(), nrand48(), etc.
+    // assumes that sizeof (unsigned short) == 2.
+    //
+
+    assert (sizeof (unsigned short) == 2);
+
+    //
+    // starting with a given seed, erand48() and nrand48()
+    // must generate the same sequence as the standard
+    // Unix/Linux functions.
+    //
+
+    unsigned short state[3];
+    state[0] = 0;
+    state[1] = 1;
+    state[2] = 2;
+
+    assert (abs (IMATH_INTERNAL_NAMESPACE::erand48 (state) - 0.671004) < 0.00001);
+    assert (abs (IMATH_INTERNAL_NAMESPACE::erand48 (state) - 0.786905) < 0.00001);
+    assert (abs (IMATH_INTERNAL_NAMESPACE::erand48 (state) - 0.316850) < 0.00001);
+    assert (abs (IMATH_INTERNAL_NAMESPACE::erand48 (state) - 0.384870) < 0.00001);
+    assert (abs (IMATH_INTERNAL_NAMESPACE::erand48 (state) - 0.854650) < 0.00001);
+
+    assert (IMATH_INTERNAL_NAMESPACE::nrand48 (state) == 0x4f4e8cb0);
+    assert (IMATH_INTERNAL_NAMESPACE::nrand48 (state) == 0x063e864b);
+    assert (IMATH_INTERNAL_NAMESPACE::nrand48 (state) == 0x2d10f1dd);
+    assert (IMATH_INTERNAL_NAMESPACE::nrand48 (state) == 0x1aadc122);
+    assert (IMATH_INTERNAL_NAMESPACE::nrand48 (state) == 0x1836a71f);
+
+    assert (state[0] == 0x2a42);
+    assert (state[1] == 0x4e3e);
+    assert (state[2] == 0x306d);
+}
+
+
+template <class Rand>
+void
+testGenerator ()
+{
+    //
+    // Test if the values, and the differences between
+    // successive values, are evenly distributed.
+    //
+
+    const int N = 10;
+    const int M = 100000;
+
+    int values[N + 1];
+    int diffs[2 * N + 3];
+    int *v = &values[0];
+    int *d = &diffs[N + 2];
+
+    for (int i = 0; i <= N; ++i)
+	v[i] = 0;
+
+    for (int i = -N; i <= N; ++i)
+	d[i] = 0;
+
+    Rand rand (0);
+    float previous = 0;
+
+    for (int i = 0; i < M * N; ++i)
+    {
+	float r = rand.nextf (0.0, 1.0);
+	float diff = r - previous;
+	previous = r;
+
+	v[int (r * N)] += 1;
+	d[IMATH_INTERNAL_NAMESPACE::floor (diff * N + 0.5)] += 1;
+    }
+
+    cout << "  values" << endl;
+
+    for (int i = 0; i < N; ++i)
+    {
+	// cout << setw (4) << i << ' ' << setw(6) << v[i] << ' ';
+	assert (abs (v[i] - M) < 0.01 * M);
+
+	// for (int j = 0; j < v[i] * 60 / M; ++j)
+	//      cout << '*';
+
+	// cout << endl;
+    }
+
+    assert (v[N] == 0);
+
+    cout << "  differences between successive values" << endl;
+
+    for (int i = -N; i <= N; ++i)
+    {
+	// cout << setw (4) << i << ' ' << setw (6) << d[i] << ' ';
+	assert (abs ((N - abs (i)) * M / N - d[i]) < 0.05 * M);
+
+	// for (int j = 0; j < d[i] * 60 / M; ++j)
+	//     cout << '*';
+
+	// cout << endl;
+    }
+
+    cout << "  range" << endl;
+
+    double rMin = 1.0;
+    double rMax = 0.0;
+
+    for (int i = 0; i <= 10000000; ++i)
+    {
+	double r = rand.nextf (0.0, 1.0);
+
+	if (rMin > r)
+	    rMin = r;
+
+	if (rMax < r)
+	    rMax = r;
+    }
+
+    assert (rMin < 0.0001 && rMax > 0.9999);
+
+    const double pow_2_60 = double (1073741824) * double (1073741824);
+
+    for (int i = 0; i <= 10000000; ++i)
+    {
+	double r0 = rand.nextf (-2.0, 3.0);
+	assert (r0 >= -2.0 && r0 <= 3.0);
+
+	double r1 = rand.nextf (-pow_2_60, 1);
+	assert (r1 >= -pow_2_60 && r1 <= 1);
+
+	double r2 = rand.nextf (-1, pow_2_60);
+	assert (r2 >= -1 && r2 <= pow_2_60);
+    }
+}
+
+
+template <class Rand>
+void
+testSolidSphere ()
+{
+    const int N = 10;
+    const int M = 10000;
+    int v[N + 1];
+
+    for (int i = 0; i <= N; ++i)
+	v[i] = 0;
+
+    Rand rand (0);
+
+    for (int i = 0; i < M * N; ++i)
+    {
+	IMATH_INTERNAL_NAMESPACE::V3f p = IMATH_INTERNAL_NAMESPACE::solidSphereRand<IMATH_INTERNAL_NAMESPACE::V3f> (rand);
+	float l = p.length();
+	v[IMATH_INTERNAL_NAMESPACE::floor (l * N)] += 1;
+
+	assert (l < 1.00001);
+    }
+
+    for (int i = 0; i < N; ++i)
+	assert (v[i] > 0);
+}
+
+
+template <class Rand>
+void
+testHollowSphere ()
+{
+    const int M = 100000;
+    Rand rand (0);
+
+    for (int i = 0; i < M; ++i)
+    {
+	IMATH_INTERNAL_NAMESPACE::V3f p = IMATH_INTERNAL_NAMESPACE::hollowSphereRand<IMATH_INTERNAL_NAMESPACE::V3f> (rand);
+	float l = p.length();
+
+	assert (abs (l - 1) < 0.00001);
+    }
+}
+
+
+} // namespace
+
+
+void
+testRandom ()
+{
+    cout << "Testing random number generators" << endl;
+
+    cout << "erand48(), nrand48()" << endl;
+    testErand48();
+
+    cout << "Rand32" << endl;
+    testGenerator<IMATH_INTERNAL_NAMESPACE::Rand32>();
+
+    cout << "Rand48" << endl;
+    testGenerator<IMATH_INTERNAL_NAMESPACE::Rand48>();
+
+    cout << "solidSphereRand()" << endl;
+    testSolidSphere<IMATH_INTERNAL_NAMESPACE::Rand32>();
+
+    cout << "hollowSphereRand()" << endl;
+    testHollowSphere<IMATH_INTERNAL_NAMESPACE::Rand32>();
+
+    cout << "ok\n" << endl;
+}