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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 <af/index.h>
#include <testHelpers.hpp>
using namespace std;
using namespace af;
TEST(FlipTests, Test_flip_1D)
{
const int num = 10000;
af::array in = randu(num);
af::array out = flip(in, 0);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int i = 0; i < num; i++) {
ASSERT_EQ(h_in[num - i - 1], h_out[i])
<< "at (" << i << ")";
}
delete[] h_in;
delete[] h_out;
}
TEST(FlipTests, Test_flip_2D0)
{
const int nx = 200;
const int ny = 200;
af::array in = randu(nx, ny);
af::array out = flip(in, 0);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int j = 0; j < ny; j++) {
int off = j * nx;
for (int i = 0; i < nx; i++) {
ASSERT_EQ(h_in[off + nx - 1 - i], h_out[off + i])
<< "at (" << i << "," << j << ")";
}
}
delete[] h_in;
delete[] h_out;
}
TEST(FlipTests, Test_flip_2D1)
{
const int nx = 200;
const int ny = 200;
af::array in = randu(nx, ny);
af::array out = flip(in, 1);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int j = 0; j < ny; j++) {
int ioff = (ny - 1 - j) * nx;
int ooff = j * nx;
for (int i = 0; i < nx; i++) {
ASSERT_EQ(h_in[ioff + i], h_out[ooff + i])
<< "at (" << i << "," << j << ")";
}
}
delete[] h_in;
delete[] h_out;
}
TEST(FlipTests, Test_flip_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 = flip(tmp, 0);
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[en - i])
<< "at (" << i << ")";
}
delete[] h_in;
delete[] h_out;
}
TEST(FlipTests, Test_flip_2D_index00)
{
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 = flip(tmp, 0);
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[en - i + out_off])
<< "at (" << i << "," << j << ")";
}
}
delete[] h_in;
delete[] h_out;
}
TEST(FlipTests, Test_flip_2D_index01)
{
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 = flip(tmp, 1);
float *h_in = in.host<float>();
float *h_out = out.host<float>();
for (int j = 0; j < ny; j++) {
const int in_off = (ny - 1 - 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(FlipTests, Test_flip_2D_index10)
{
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 = flip(tmp, 0);
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[nx - 1 - i + in_off], h_out[i + out_off])
<< "at (" << i << "," << j << ")";
}
}
delete[] h_in;
delete[] h_out;
}
TEST(FlipTests, Test_flip_2D_index11)
{
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 = flip(tmp, 1);
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 = (en - j) * 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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