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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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.
*/
#ifndef ANDROID_BASE_PARSEDOUBLE_H
#define ANDROID_BASE_PARSEDOUBLE_H
#include <errno.h>
#include <stdlib.h>
#include <limits>
namespace android {
namespace base {
// Parse double value in the string 's' and sets 'out' to that value.
// Optionally allows the caller to define a 'min' and 'max' beyond which
// otherwise valid values will be rejected. Returns boolean success.
static inline bool ParseDouble(const char* s, double* out,
double min = std::numeric_limits<double>::lowest(),
double max = std::numeric_limits<double>::max()) {
errno = 0;
char* end;
double result = strtod(s, &end);
if (errno != 0 || s == end || *end != '\0') {
return false;
}
if (result < min || max < result) {
return false;
}
*out = result;
return true;
}
} // namespace base
} // namespace android
#endif // ANDROID_BASE_PARSEDOUBLE_H
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