[wasm] Use a C wrapper function to calculate F64Pow.

src/wasm/wasm-external-refs.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <math.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <limits>
 
 #include "include/v8config.h"
 
 #include "src/base/bits.h"
+#include "src/utils.h"
 #include "src/wasm/wasm-external-refs.h"
 
 namespace v8 {
 namespace internal {
 namespace wasm {
 
 void f32_trunc_wrapper(float* param) { *param = truncf(*param); }
 
 void f32_floor_wrapper(float* param) { *param = floorf(*param); }
 
@@ skipping 164 matching lines @@
 }
 
 uint32_t word32_popcnt_wrapper(uint32_t* input) {
   return static_cast<uint32_t>(base::bits::CountPopulation(*input));
 }
 
 uint32_t word64_popcnt_wrapper(uint64_t* input) {
   return static_cast<uint32_t>(base::bits::CountPopulation(*input));
 }
 
+void float64_pow_wrapper(double* param0, double* param1) {
+  double x = ReadDoubleValue(param0);
+  double y = ReadDoubleValue(param1);
+  if (std::isnan(y) || ((x == 1 || x == -1) && std::isinf(y))) {
+    WriteDoubleValue(param0, std::numeric_limits<double>::quiet_NaN());
+  }
+  WriteDoubleValue(param0, Pow(x, y));
+}
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8