// Copyright 2020 The Pigweed Authors // // 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 // // https://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 "pw_log/log.h" #include "pw_preprocessor/compiler.h" #include "pw_status/status.h" PW_NO_INLINE pw::Status Divide(float a, float b, float* out) { if (b == 0) { return pw::Status::InvalidArgument(); } *out = a / b; return pw::OkStatus(); } int volatile* unoptimizable; int main() { float f; if (Divide(*unoptimizable, *unoptimizable, &f).ok()) { PW_LOG_INFO("result is %f", f); return 0; } return 1; }