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/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <gtest/gtest.h>
#include <arrayfire.h>
#include <af/dim4.hpp>
#include <af/defines.h>
#include <af/traits.hpp>
#include <af/data.h>
#include <vector>
#include <iostream>
#include <complex>
#include <string>
#include <testHelpers.hpp>
using std::vector;
using std::string;
using std::cout;
using std::endl;
using std::abs;
using af::cfloat;
using af::cdouble;
using af::dim4;
template<typename T>
class Triangle : public ::testing::Test { };
typedef ::testing::Types<float, af::cfloat, double, af::cdouble, int, unsigned, char, uchar, uintl, intl, short, ushort> TestTypes;
TYPED_TEST_CASE(Triangle, TestTypes);
template<typename T>
void triangleTester(const dim4 dims, bool is_upper, bool is_unit_diag=false)
{
if (noDoubleTests<T>()) return;
#if 1
af::array in = cpu_randu<T>(dims);
#else
af::array in = af::randu(dims, (af::dtype)af::dtype_traits<T>::af_type);
#endif
T *h_in = in.host<T>();
af::array out = is_upper ? upper(in, is_unit_diag) : lower(in, is_unit_diag);
T *h_out = out.host<T>();
int m = dims[0];
int n = dims[1];
for (int z = 0; z < (int)(dims[2] * dims[3]); z++) {
int z_off = z * m * n;
for (int y = 0; y < n; y++) {
int y_off = z_off + y * m;
for (int x = 0; x < m; x++) {
T val = T(0);
if (((y <= x) && !is_upper) ||
((y >= x) && is_upper)) {
val = (is_unit_diag && y == x) ? (T)(1) : h_in[y_off + x];
}
ASSERT_EQ(h_out[y_off + x], val) << "at (" << x << ", " << y << ")";
}
}
}
delete[] h_in;
delete[] h_out;
}
TYPED_TEST(Triangle, Lower2DRect0)
{
triangleTester<TypeParam>(dim4(500, 600), false);
}
TYPED_TEST(Triangle, Lower2DRect1)
{
triangleTester<TypeParam>(dim4(2003, 1775), false);
}
TYPED_TEST(Triangle, Lower2DSquare)
{
triangleTester<TypeParam>(dim4(2048, 2048), false);
}
TYPED_TEST(Triangle, Lower3D)
{
triangleTester<TypeParam>(dim4(1000, 1000, 5), false);
}
TYPED_TEST(Triangle, Lower4D)
{
triangleTester<TypeParam>(dim4(600, 900, 3, 2), false);
}
TYPED_TEST(Triangle, Upper2DRect0)
{
triangleTester<TypeParam>(dim4(500, 600), true);
}
TYPED_TEST(Triangle, Upper2DRect1)
{
triangleTester<TypeParam>(dim4(2003, 1775), true);
}
TYPED_TEST(Triangle, Upper2DSquare)
{
triangleTester<TypeParam>(dim4(2048, 2048), true);
}
TYPED_TEST(Triangle, Upper3D)
{
triangleTester<TypeParam>(dim4(1000, 1000, 5), true);
}
TYPED_TEST(Triangle, Upper4D)
{
triangleTester<TypeParam>(dim4(600, 900, 3, 2), true);
}
TYPED_TEST(Triangle, Lower2DRect0Unit)
{
triangleTester<TypeParam>(dim4(500, 600), false, true);
}
TYPED_TEST(Triangle, Lower2DRect1Unit)
{
triangleTester<TypeParam>(dim4(2003, 1775), false, true);
}
TYPED_TEST(Triangle, Lower2DSquareUnit)
{
triangleTester<TypeParam>(dim4(2048, 2048), false, true);
}
TYPED_TEST(Triangle, Upper2DRect0Unit)
{
triangleTester<TypeParam>(dim4(500, 600), true, true);
}
TYPED_TEST(Triangle, Upper2DRect1Unit)
{
triangleTester<TypeParam>(dim4(2003, 1775), true, true);
}
TYPED_TEST(Triangle, Upper2DSquareUnit)
{
triangleTester<TypeParam>(dim4(2048, 2048), true, true);
}
TEST(Lower, ExtractGFOR)
{
using namespace af;
dim4 dims = dim4(100, 100, 3);
array A = round(100 * randu(dims));
array B = constant(0, 100, 100, 3);
gfor(seq ii, 3) {
B(span, span, ii) = lower(A(span, span, ii));
}
for(int ii = 0; ii < 3; ii++) {
array c_ii = lower(A(span, span, ii));
array b_ii = B(span, span, ii);
ASSERT_EQ(max<double>(abs(c_ii - b_ii)) < 1E-5, true);
}
}
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