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     *
     * b) this iteration converges to floor(sqrt(x)). In fact, the number of correct digits doubles
     * with each iteration, so this algorithm takes O(log(digits)) iterations.
     *
     * We start out with a double-precision approximation, which may be higher or lower than the
     * true value. Therefore, we perform at least one Newton iteration to get a guess that's

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/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
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 * Copyright 2012-2025 CodeLibs Project and the Others.
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 * you may not use this file except in compliance with the License.
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 * Unless required by applicable law or agreed to in writing, software
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/*
 * Copyright (C) 2015 The Guava Authors
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/*
 * Copyright (C) 2012 The Guava Authors
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 * 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
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