blt-gp/examples/gp_test_2.cpp

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/*
* <Short Description>
* Copyright (C) 2024 Brett Terpstra
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <blt/gp/program.h>
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#include <blt/gp/generators.h>
#include <blt/gp/tree.h>
#include <blt/std/logging.h>
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static constexpr long SEED = 41912;
blt::gp::type_system type_system;
blt::gp::gp_program program(type_system, std::mt19937_64{SEED}); // NOLINT
blt::gp::operation_t add([](float a, float b) { return a + b; });
blt::gp::operation_t sub([](float a, float b) { return a - b; });
blt::gp::operation_t mul([](float a, float b) { return a * b; });
blt::gp::operation_t pro_div([](float a, float b) { return b == 0 ? 0.0f : a / b; });
blt::gp::operation_t lit([]() {
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//static std::uniform_real_distribution<float> dist(-32000, 32000);
static std::uniform_real_distribution<float> dist(0.0f, 10.0f);
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return dist(program.get_random());
});
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/**
* This is a test using a type with blt::gp
*/
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int main()
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{
type_system.register_type<float>();
blt::gp::gp_operations silly{type_system};
silly.add_operator(add);
silly.add_operator(sub);
silly.add_operator(mul);
silly.add_operator(pro_div);
silly.add_operator(lit, true);
program.set_operations(std::move(silly));
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blt::gp::grow_generator_t grow;
auto tree = grow.generate(blt::gp::generator_arguments{program, type_system.get_type<float>().id(), 3, 7});
auto value = tree.get_evaluation_value<float>(nullptr);
BLT_TRACE(value);
return 0;
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}