Java Utililty Methods Double to

List of utility methods to do Double to

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Description

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

Method

StringdoubleToFractionStr(final Double d)
Converts a double to a string fraction, i.e. 
boolean negative = false;
Double v = d;
if (v < 0) {
    negative = true;
    v = -v;
int w = (int) ((v - Math.floor(v)) * FACTOR);
int gcd = gcd(w, FACTOR);
...
StringdoubleToHashString(double value)
double To Hash String 
StringBuilder sb = new StringBuilder(16);
long bits = Double.doubleToLongBits(value);
for (int i = 7; i >= 0; i--) {
    int byteValue = (int) ((bits >>> (8 * i)) & 0xff);
    int high = ((byteValue >> 4) & 0xf);
    int low = (byteValue & 0xf);
    sb.append(HEX_CHARACTERS[high]);
    sb.append(HEX_CHARACTERS[low]);
...
StringdoubleToHexString(double val)
double To Hex String 
long reversed = Long.reverseBytes(Double.doubleToLongBits(val));
String res = Long.toHexString(reversed);
res = "0000000000000000".substring(res.length()) + res;
return res;
StringdoubleToI18nString(double d)
double To In String 
return doubleToI18nString(d, false);
intdoubleToIndex(final double x)
double To Index 
final long j = Double.doubleToRawLongBits(x);
final long k = j >>> (64 - BITS);
assert k <= Integer.MAX_VALUE;
return (int) k;
byte[]doubleToLex(double v)
Converts a regular java double to a lexicographical sortable double 
long l = Double.doubleToLongBits(v);
if (Double.isNaN(v)) { 
} else if (v >= 0) {
    l ^= c64;
} else {
    l ^= 0xFFFFFFFFFFFFFFFFL;
return longBytes(l, new byte[8], 0);
...
StringdoubleToPercent(double value, int precision)
Convert a double value to percentage 
long tempValue = Math.round(value * (Math.pow(10, (precision + 2))));
String percentValue = null;
if (precision == 0)
    percentValue = String.valueOf((double) tempValue);
else
    percentValue = String.valueOf(((double) tempValue) / (Math.pow(10, precision)));
percentValue += '%';
return percentValue;
...
long[]doubleToRational(double number)
double To Rational 
if ((number == 0.0d) || Double.isNaN(number)) {
    throw new IllegalArgumentException(number + " cannot be represented as a rational number");
long bits = Double.doubleToLongBits(number);
long sign = bits >>> 63;
long exponent = ((bits >>> 52) ^ (sign << 11)) - 1023;
long fraction = bits << 12; 
long a = 1L;
...
byte[]doubleToRegisters(double d)
Converts a double value to a byte[8]. 
return longToRegisters(Double.doubleToLongBits(d));
intdoubleToScale(double val)
Converts a double to a 24 bit register value. 
int temp = (int) (val * (double) 0x400000);
if (temp > 0x7fffff) {
    temp = 0x7fffff;
if (temp < -0x800000) {
    temp = -0x800000;
return temp;
...