add the operator pow

src/include/migraphx/op/pow.hpp

+#ifndef MIGRAPHX_GUARD_OPERATORS_POW_HPP
+#define MIGRAPHX_GUARD_OPERATORS_POW_HPP
+
+#include <migraphx/op/binary.hpp>
+#include <migraphx/config.hpp>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+namespace op {
+
+struct pow : binary<pow>
+{
+    auto apply() const
+    {
+        return [](auto x, auto y) { return std::pow(x, y); };
+    }
+};
+
+} // namespace op
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx
+
+#endif

src/targets/gpu/device/pow.cpp

+#include <migraphx/gpu/device/pow.hpp>
+#include <migraphx/gpu/device/nary.hpp>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+namespace gpu {
+namespace device {
+
+void pow(hipStream_t stream, const argument& result, const argument& arg1, const argument& arg2)
+{
+    nary(stream, result, arg1, arg2)([](auto x, auto y) { return ::pow(to_hip_type(x), to_hip_type(y)); });
+}
+
+} // namespace device
+} // namespace gpu
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx

src/targets/gpu/include/migraphx/gpu/device/pow.hpp

+
+#ifndef MIGRAPHX_GUARD_RTGLIB_DEVICE_POW_HPP
+#define MIGRAPHX_GUARD_RTGLIB_DEVICE_POW_HPP
+
+#include <migraphx/argument.hpp>
+#include <migraphx/config.hpp>
+#include <hip/hip_runtime_api.h>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+namespace gpu {
+namespace device {
+
+void pow(hipStream_t stream, const argument& result, const argument& arg1, const argument& arg2);
+
+} // namespace device
+} // namespace gpu
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx
+
+#endif

src/targets/gpu/include/migraphx/gpu/pow.hpp

+#ifndef MIGRAPHX_GUARD_RTGLIB_POW_HPP
+#define MIGRAPHX_GUARD_RTGLIB_POW_HPP
+
+#include <migraphx/gpu/oper.hpp>
+#include <migraphx/gpu/device/pow.hpp>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+namespace gpu {
+
+struct hip_pow : binary_device<hip_pow, device::pow>
+{
+};
+
+} // namespace gpu
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx
+
+#endif