Java Utililty Methods BigDecimal Log

List of utility methods to do BigDecimal Log

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Description

The list of methods to do BigDecimal Log are organized into topic(s).

Method

BigDecimallog(int base_int, BigDecimal x)
log 
BigDecimal result = BigDecimal.ZERO;
BigDecimal input = new BigDecimal(x.toString());
int decimalPlaces = 100;
int scale = input.precision() + decimalPlaces;
int maxite = 10000;
int ite = 0;
BigDecimal maxError_BigDecimal = new BigDecimal(BigInteger.ONE, decimalPlaces + 1);
RoundingMode a_RoundingMode = RoundingMode.UP;
...
BigDecimallog10(BigDecimal b)
log 
final int NUM_OF_DIGITS = SCALE + 2;
MathContext mc = new MathContext(NUM_OF_DIGITS, RoundingMode.HALF_EVEN);
if (b.signum() <= 0) {
    throw new ArithmeticException("log of a negative number! (or zero)");
} else if (b.compareTo(BigDecimal.ONE) == 0) {
    return BigDecimal.ZERO;
} else if (b.compareTo(BigDecimal.ONE) < 0) {
    return (log10((BigDecimal.ONE).divide(b, mc))).negate();
...
intlog10AbsCeil(BigDecimal x)
log Abs Ceil 
int log10 = log10AbsCeil(x.unscaledValue());
return subInts(log10, x.scale());
intlog2AbsCeil(BigDecimal x)
log Abs Ceil 
if (x.signum() == 0) {
    throw new IllegalArgumentException("x == 0");
if (x.signum() < 0) {
    x = x.negate();
final int compareTo1 = x.compareTo(BigDecimal.ONE);
if (compareTo1 == 0) {
...