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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 <af/array.h>
#include <af/arith.h>
#include <af/data.h>
#include <testHelpers.hpp>
using namespace std;
using namespace af;
TEST(FlatTests, Test_flat_1D)
{
const int num = 10000;
af::array in = randu(num);
af::array out = flat(in);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int i = 0; i < num; i++) {
ASSERT_EQ(h_in[i], h_out[i]);
}
delete[] h_in;
delete[] h_out;
}
TEST(FlatTests, Test_flat_2D)
{
const int nx = 200;
const int ny = 200;
const int num = nx * ny;
af::array in = randu(nx, ny);
af::array out = flat(in);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int i = 0; i < num; i++) {
ASSERT_EQ(h_in[i], h_out[i]);
}
delete[] h_in;
delete[] h_out;
}
TEST(FlatTests, Test_flat_1D_index)
{
const int num = 10000;
const int st = 101;
const int en = 5000;
af::array in = randu(num);
af::array tmp = in(seq(st, en));
af::array out = flat(tmp);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int i = st; i <= en; i++) {
ASSERT_EQ(h_in[i], h_out[i - st]);
}
delete[] h_in;
delete[] h_out;
}
TEST(FlatTests, Test_flat_2D_index0)
{
const int nx = 200;
const int ny = 200;
const int st = 21;
const int en = 180;
const int nxo = (en - st + 1);
af::array in = randu(nx, ny);
af::array tmp = in(seq(st, en), span);
af::array out = flat(tmp);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int j = 0; j < ny; j++) {
const int in_off = j * nx;
const int out_off =j * nxo;
for (int i = st; i <= en; i++) {
ASSERT_EQ(h_in[i + in_off], h_out[i - st + out_off])
<< "at (" << i << "," << j << ")";
}
}
delete[] h_in;
delete[] h_out;
}
TEST(FlatTests, Test_flat_2D_index1)
{
const int nx = 200;
const int ny = 200;
const int st = 21;
const int en = 180;
af::array in = randu(nx, ny);
af::array tmp = in(span, seq(st, en));
af::array out = flat(tmp);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int j = st; j <= en; j++) {
const int in_off = j * nx;
const int out_off = (j - st) * nx;
for (int i = 0; i < nx; i++) {
ASSERT_EQ(h_in[i + in_off], h_out[i + out_off])
<< "at (" << i << "," << j << ")";
}
}
delete[] h_in;
delete[] h_out;
}
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