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/*
* Copyright 2017 Uber Technologies, Inc.
*
* 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.
*/
/** @file mathExtensions.c
* @brief Math functions that should've been in math.h but aren't
*/
#include "mathExtensions.h"
/**
* _ipow does integer exponentiation efficiently. Taken from StackOverflow.
*
* @param base the integer base
* @param exp the integer exponent
*
* @return the exponentiated value
*/
int _ipow(int base, int exp) {
int result = 1;
while (exp) {
if (exp & 1) result *= base;
exp >>= 1;
base *= base;
}
return result;
}
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