From 44861dcbfeee041223c4aac1ee075e92fa4daa01 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 18 Sep 2016 12:42:15 +0200
Subject: update

---
 eigen/test/eigen2/eigen2_packetmath.cpp | 132 ++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 eigen/test/eigen2/eigen2_packetmath.cpp

(limited to 'eigen/test/eigen2/eigen2_packetmath.cpp')

diff --git a/eigen/test/eigen2/eigen2_packetmath.cpp b/eigen/test/eigen2/eigen2_packetmath.cpp
new file mode 100644
index 0000000..b1f325f
--- /dev/null
+++ b/eigen/test/eigen2/eigen2_packetmath.cpp
@@ -0,0 +1,132 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include "main.h"
+
+// using namespace Eigen;
+
+template<typename Scalar> bool areApprox(const Scalar* a, const Scalar* b, int size)
+{
+  for (int i=0; i<size; ++i)
+    if (!ei_isApprox(a[i],b[i])) return false;
+  return true;
+}
+
+#define CHECK_CWISE(REFOP, POP) { \
+  for (int i=0; i<PacketSize; ++i) \
+    ref[i] = REFOP(data1[i], data1[i+PacketSize]); \
+  ei_pstore(data2, POP(ei_pload(data1), ei_pload(data1+PacketSize))); \
+  VERIFY(areApprox(ref, data2, PacketSize) && #POP); \
+}
+
+#define REF_ADD(a,b) ((a)+(b))
+#define REF_SUB(a,b) ((a)-(b))
+#define REF_MUL(a,b) ((a)*(b))
+#define REF_DIV(a,b) ((a)/(b))
+
+namespace std {
+
+template<> const complex<float>& min(const complex<float>& a, const complex<float>& b)
+{ return a.real() < b.real() ? a : b; }
+
+template<> const complex<float>& max(const complex<float>& a, const complex<float>& b)
+{ return a.real() < b.real() ? b : a; }
+
+}
+
+template<typename Scalar> void packetmath()
+{
+  typedef typename ei_packet_traits<Scalar>::type Packet;
+  const int PacketSize = ei_packet_traits<Scalar>::size;
+
+  const int size = PacketSize*4;
+  EIGEN_ALIGN_128 Scalar data1[ei_packet_traits<Scalar>::size*4];
+  EIGEN_ALIGN_128 Scalar data2[ei_packet_traits<Scalar>::size*4];
+  EIGEN_ALIGN_128 Packet packets[PacketSize*2];
+  EIGEN_ALIGN_128 Scalar ref[ei_packet_traits<Scalar>::size*4];
+  for (int i=0; i<size; ++i)
+  {
+    data1[i] = ei_random<Scalar>();
+    data2[i] = ei_random<Scalar>();
+  }
+
+  ei_pstore(data2, ei_pload(data1));
+  VERIFY(areApprox(data1, data2, PacketSize) && "aligned load/store");
+
+  for (int offset=0; offset<PacketSize; ++offset)
+  {
+    ei_pstore(data2, ei_ploadu(data1+offset));
+    VERIFY(areApprox(data1+offset, data2, PacketSize) && "ei_ploadu");
+  }
+
+  for (int offset=0; offset<PacketSize; ++offset)
+  {
+    ei_pstoreu(data2+offset, ei_pload(data1));
+    VERIFY(areApprox(data1, data2+offset, PacketSize) && "ei_pstoreu");
+  }
+
+  for (int offset=0; offset<PacketSize; ++offset)
+  {
+    packets[0] = ei_pload(data1);
+    packets[1] = ei_pload(data1+PacketSize);
+         if (offset==0) ei_palign<0>(packets[0], packets[1]);
+    else if (offset==1) ei_palign<1>(packets[0], packets[1]);
+    else if (offset==2) ei_palign<2>(packets[0], packets[1]);
+    else if (offset==3) ei_palign<3>(packets[0], packets[1]);
+    ei_pstore(data2, packets[0]);
+
+    for (int i=0; i<PacketSize; ++i)
+      ref[i] = data1[i+offset];
+
+    typedef Matrix<Scalar, PacketSize, 1> Vector;
+    VERIFY(areApprox(ref, data2, PacketSize) && "ei_palign");
+  }
+
+  CHECK_CWISE(REF_ADD,  ei_padd);
+  CHECK_CWISE(REF_SUB,  ei_psub);
+  CHECK_CWISE(REF_MUL,  ei_pmul);
+  #ifndef EIGEN_VECTORIZE_ALTIVEC
+  if (!ei_is_same_type<Scalar,int>::ret)
+    CHECK_CWISE(REF_DIV,  ei_pdiv);
+  #endif
+  CHECK_CWISE(std::min, ei_pmin);
+  CHECK_CWISE(std::max, ei_pmax);
+
+  for (int i=0; i<PacketSize; ++i)
+    ref[i] = data1[0];
+  ei_pstore(data2, ei_pset1(data1[0]));
+  VERIFY(areApprox(ref, data2, PacketSize) && "ei_pset1");
+
+  VERIFY(ei_isApprox(data1[0], ei_pfirst(ei_pload(data1))) && "ei_pfirst");
+
+  ref[0] = 0;
+  for (int i=0; i<PacketSize; ++i)
+    ref[0] += data1[i];
+  VERIFY(ei_isApprox(ref[0], ei_predux(ei_pload(data1))) && "ei_predux");
+
+  for (int j=0; j<PacketSize; ++j)
+  {
+    ref[j] = 0;
+    for (int i=0; i<PacketSize; ++i)
+      ref[j] += data1[i+j*PacketSize];
+    packets[j] = ei_pload(data1+j*PacketSize);
+  }
+  ei_pstore(data2, ei_preduxp(packets));
+  VERIFY(areApprox(ref, data2, PacketSize) && "ei_preduxp");
+}
+
+void test_eigen2_packetmath()
+{
+  for(int i = 0; i < g_repeat; i++) {
+    CALL_SUBTEST_1( packetmath<float>() );
+    CALL_SUBTEST_2( packetmath<double>() );
+    CALL_SUBTEST_3( packetmath<int>() );
+    CALL_SUBTEST_4( packetmath<std::complex<float> >() );
+  }
+}
-- 
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