ClickHouse/src/Functions/sigmoid.cpp
Robert Schulze b24ca8de52
Fix various clang-tidy warnings
When I tried to add cool new clang-tidy 14 warnings, I noticed that the
current clang-tidy settings already produce a ton of warnings. This
commit addresses many of these. Almost all of them were non-critical,
i.e. C vs. C++ style casts.
2022-04-20 10:29:05 +02:00

51 lines
908 B
C++

#include <Functions/FunctionMathUnary.h>
#include <Functions/FunctionFactory.h>
namespace DB
{
namespace
{
struct SigmoidName { static constexpr auto name = "sigmoid"; };
#if USE_FASTOPS
namespace
{
struct Impl
{
static constexpr auto name = SigmoidName::name;
static constexpr auto rows_per_iteration = 0;
static constexpr bool always_returns_float64 = false;
template <typename T>
static void execute(const T * src, size_t size, T * dst)
{
NFastOps::Sigmoid<>(src, size, dst);
}
};
}
using FunctionSigmoid = FunctionMathUnary<Impl>;
#else
double sigmoid(double x)
{
return 1.0 / (1.0 + exp(-x));
}
using FunctionSigmoid = FunctionMathUnary<UnaryFunctionVectorized<SigmoidName, sigmoid>>;
#endif
}
void registerFunctionSigmoid(FunctionFactory & factory)
{
factory.registerFunction<FunctionSigmoid>();
}
}