#include "common/random_engine.h"
#include "function/arithmetic/vector_arithmetic_functions.h"
#include "function/scalar_function.h"
#include "main/client_context.h"
namespace lbug {
namespace function {
using namespace lbug::common;
struct Rand {
static void operation(double& result, void* dataPtr) {
auto context = reinterpret_cast<FunctionBindData*>(dataPtr)->clientContext;
result = static_cast<double>(RandomEngine::Get(*context)->nextRandomInteger()) /
static_cast<double>(UINT32_MAX);
}
};
function_set RandFunction::getFunctionSet() {
function_set result;
result.push_back(std::make_unique<ScalarFunction>(name, std::vector<LogicalTypeID>{},
LogicalTypeID::DOUBLE, ScalarFunction::NullaryAuxilaryExecFunction<double, Rand>));
return result;
}
} }