commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/linear/OpenIntToDoubleHashMap.java [150:160]:
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    private static int computeCapacity(final int expectedSize) {
        if (expectedSize == 0) {
            return 1;
        }
        final int capacity   = (int) JdkMath.ceil(expectedSize / LOAD_FACTOR);
        final int powerOfTwo = Integer.highestOneBit(capacity);
        if (powerOfTwo == capacity) {
            return capacity;
        }
        return nextPowerOfTwo(capacity);
    }
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commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/linear/OpenIntToFieldHashMap.java [162:172]:
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    private static int computeCapacity(final int expectedSize) {
        if (expectedSize == 0) {
            return 1;
        }
        final int capacity   = (int) JdkMath.ceil(expectedSize / LOAD_FACTOR);
        final int powerOfTwo = Integer.highestOneBit(capacity);
        if (powerOfTwo == capacity) {
            return capacity;
        }
        return nextPowerOfTwo(capacity);
    }
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