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#include "../test.h"
#include "../../aligned.h"
#include "../../kernels.h"
#include <numeric>
namespace intgemm {
float sigmoid_ref(float x) {
if (x < 0)
return exp(x) / (1 + exp(x));
else
return 1 / (1 + exp(-x));
}
template <CPUType CPUType_>
void kernel_sigmoid_test() {
if (kCPU < CPUType_)
return;
using vec_t = vector_t<CPUType_, float>;
constexpr static int VECTOR_LENGTH = sizeof(vec_t) / sizeof(float);
AlignedVector<float> input(VECTOR_LENGTH);
AlignedVector<float> output(VECTOR_LENGTH);
std::iota(input.begin(), input.end(), -int(VECTOR_LENGTH / 2));
*output.template as<vec_t>() = kernels::sigmoid(*input.template as<vec_t>());
for (std::size_t i = 0; i < output.size(); ++i)
CHECK_EPS(output[i], sigmoid_ref(input[i]), 0.001f);
}
template INTGEMM_AVX2 void kernel_sigmoid_test<CPUType::AVX2>();
KERNEL_TEST_CASE("sigmoid AVX2") { return kernel_sigmoid_test<CPUType::AVX2>(); }
#ifdef INTGEMM_COMPILER_SUPPORTS_AVX512
template INTGEMM_AVX512BW void kernel_sigmoid_test<CPUType::AVX512BW>();
KERNEL_TEST_CASE("sigmoid AVX512BW") { return kernel_sigmoid_test<CPUType::AVX512BW>(); }
#endif
}
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