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rewrite functional c++ simulation library

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This commit is contained in:
Emily Schmidt 2024-06-27 15:43:57 +01:00
parent eb2bb8c45b
commit 21bb1cf1bc
3 changed files with 384 additions and 417 deletions
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79
tests/functional/single_cells/vcd_harness.cc
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@ -33,23 +33,31 @@ struct Dump {
}
};
// Function to set all values in a signal to false
template<std::size_t n>
void set_all_false(Signal<n>& signal) {
std::fill(signal.begin(), signal.end(), false);
}
template<std::size_t n>
void set_all_random(Signal<n>& signal) {
template<size_t n>
Signal<n> random_signal() {
std::random_device rd; // Random device for seeding
std::mt19937 gen(rd()); // Mersenne Twister engine
std::bernoulli_distribution dist(0.5); // 50-50 distribution
for (auto& value : signal) {
value = dist(gen); // Set each value to a random boolean
}
std::uniform_int_distribution<uint32_t> dist;
std::array<uint32_t, (n+31)/32> words;
for(auto &w : words)
w = dist(gen);
return Signal<n>::from_array(words);
}
struct Reset {
template <size_t n>
void operator()(const char *, Signal<n> &signal) {
signal = 0;
}
};
struct Randomize {
template <size_t n>
void operator()(const char *, Signal<n> &signal) {
signal = random_signal<n>();
}
};
int main(int argc, char **argv)
{
if (argc != 2) {
@ -62,10 +70,10 @@ int main(int argc, char **argv)
constexpr int steps = 10;
constexpr int number_timescale = 1;
const std::string units_timescale = "us";
gold_Inputs inputs;
gold_Outputs outputs;
gold_State state;
gold_State next_state;
gold::Inputs inputs;
gold::Outputs outputs;
gold::State state;
gold::State next_state;
std::ofstream vcd_file(functional_vcd_filename);
@ -73,45 +81,34 @@ int main(int argc, char **argv)
vcd_file << "$scope module gold $end\n";
{
DumpHeader d(vcd_file);
inputs.dump(d);
outputs.dump(d);
state.dump(d);
inputs.visit(d);
outputs.visit(d);
state.visit(d);
}
vcd_file << "$enddefinitions $end\n$dumpvars\n";
vcd_file << "#0\n";
// Set all signals to false
for (int i = 0; i < inputs.size(); ++i) {
auto input_variant = inputs.get_input(i);
std::visit([](auto& signal_ref) {
set_all_false(signal_ref.get());
}, input_variant);
}
inputs.visit(Reset());
gold(inputs, outputs, state, next_state);
gold::eval(inputs, outputs, state, next_state);
{
Dump d(vcd_file);
inputs.dump(d);
outputs.dump(d);
state.dump(d);
inputs.visit(d);
outputs.visit(d);
state.visit(d);
}
for (int step = 0; step < steps; ++step) {
// Functional backend cxx
vcd_file << "#" << (step + 1) << "\n";
// Set all signals to random
for (int i = 0; i < inputs.size(); ++i) {
auto input_variant = inputs.get_input(i);
std::visit([](auto& signal_ref) {
set_all_random(signal_ref.get());
}, input_variant);
}
inputs.visit(Randomize());
gold(inputs, outputs, state, next_state);
gold::eval(inputs, outputs, state, next_state);
{
Dump d(vcd_file);
inputs.dump(d);
outputs.dump(d);
state.dump(d);
inputs.visit(d);
outputs.visit(d);
state.visit(d);
}
state = next_state;