| // Copyright 2021 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <cmath> |
| |
| #include "cobalt/extension/cwrappers.h" |
| #include "starboard/common/log.h" |
| #include "starboard/once.h" |
| #include "starboard/system.h" |
| |
| static double (*g_pow_wrapper)(double, double) = &pow; |
| static SbOnceControl g_pow_wrapper_once = SB_ONCE_INITIALIZER; |
| |
| static void InitPowWrapper(void) { |
| const CobaltExtensionCWrappersApi* cwrappers = |
| (const CobaltExtensionCWrappersApi*)SbSystemGetExtension( |
| kCobaltExtensionCWrappersName); |
| if (cwrappers != NULL && cwrappers->version >= 1 && |
| cwrappers->PowWrapper != NULL) { |
| g_pow_wrapper = cwrappers->PowWrapper; |
| } |
| } |
| |
| extern "C" { |
| |
| double CobaltPowWrapper(double base, double exponent) { |
| SbOnce(&g_pow_wrapper_once, InitPowWrapper); |
| return g_pow_wrapper(base, exponent); |
| } |
| |
| } |