/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015-2023 Advanced Micro Devices, Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include <migraphx/instruction.hpp>
#include <migraphx/literal.hpp>
#include <migraphx/make_op.hpp>
#include <migraphx/program.hpp>
#include <migraphx/register_target.hpp>
#include <migraphx/verify.hpp>

#include <test.hpp>

float elu(float a, float x) { return x > 0 ? x : a * std::expm1(x); }

TEST_CASE(elu_test)
{
    migraphx::program p;
    auto* mm = p.get_main_module();
    migraphx::shape s{migraphx::shape::float_type, {2, 2}};
    auto l      = mm->add_literal(migraphx::literal{s, {-1.0, 2.0, -3.0, 4.0}});
    float alpha = 0.5;
    mm->add_instruction(migraphx::make_op("elu", {{"alpha", alpha}}), l);
    p.compile(migraphx::make_target("ref"));
    auto result = p.eval({}).back();
    std::vector<float> results_vector(4);
    result.visit([&](auto output) { results_vector.assign(output.begin(), output.end()); });
    std::vector<float> gold{elu(alpha, -1), elu(alpha, 2), elu(alpha, -3), elu(alpha, 4)};
    EXPECT(migraphx::verify::verify_rms_range(results_vector, gold));
}

TEST_CASE(elu_dyn_test)
{
    migraphx::program p;
    auto* mm = p.get_main_module();
    migraphx::shape::dynamic_dimension dd{3, 8};
    migraphx::shape s{migraphx::shape::float_type, {dd}};
    auto input  = mm->add_parameter("X", s);
    float alpha = 0.5;
    mm->add_instruction(migraphx::make_op("elu", {{"alpha", alpha}}), input);
    p.compile(migraphx::make_target("ref"));

    std::vector<float> input_data{-1.0, 2.0, -3.0, 4.0};
    migraphx::parameter_map params0;
    migraphx::shape input_fixed_shape0{migraphx::shape::float_type, {4}};
    params0["X"] = migraphx::argument(input_fixed_shape0, input_data.data());
    auto result  = p.eval(params0).back();
    std::vector<float> results_vector(4);
    result.visit([&](auto output) { results_vector.assign(output.begin(), output.end()); });
    std::vector<float> gold{elu(alpha, -1), elu(alpha, 2), elu(alpha, -3), elu(alpha, 4)};
    EXPECT(migraphx::verify::verify_rms_range(results_vector, gold));
}