本文整理汇总了Java中java.math.RoundingMode.DOWN属性的典型用法代码示例。如果您正苦于以下问题：Java RoundingMode.DOWN属性的具体用法？Java RoundingMode.DOWN怎么用？Java RoundingMode.DOWN使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类java.math.RoundingMode的用法示例。
在下文中一共展示了RoundingMode.DOWN属性的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: main
public static void main(String[] args) {
SquareRootOfBigIntegerExample SquareRootOfBigIntegerExample =
new SquareRootOfBigIntegerExample();
String n = "";
MathContext mc = new MathContext(0, RoundingMode.DOWN);
mc = MathContext.DECIMAL32;
BigInteger my2P100000 = new BigInteger("0");
BigInteger two = new BigInteger("2");
BigInteger one = new BigInteger("1");
my2P100000 = two.shiftLeft(2000 - 1);
System.out.println("2^2000 -- Step 1");
System.out.println("Value of 2^2,000 " + my2P100000);
System.out.println("");
System.out.println("Finding the Square Root of 2^2000");
String mys = my2P100000 + "";
n = (mys);
int firsttime = 0;
BigDecimal myNumber = new BigDecimal(n);
BigDecimal g = new BigDecimal("1");
BigDecimal my2 = new BigDecimal("2");
BigDecimal epsilon = new BigDecimal("0.0000000001");
BigDecimal nByg = myNumber.divide(g, 9, BigDecimal.ROUND_FLOOR);
//Get the value of n/g
BigDecimal nBygPlusg = nByg.add(g);
//Get the value of "n/g + g
BigDecimal nBygPlusgHalf = nBygPlusg.divide(my2, 9, BigDecimal.ROUND_FLOOR);
//Get the value of (n/g + g)/2
BigDecimal saveg = nBygPlusgHalf;
firsttime = 99;
do {
g = nBygPlusgHalf;
nByg = myNumber.divide(g, 9, BigDecimal.ROUND_FLOOR);
nBygPlusg = nByg.add(g);
nBygPlusgHalf = nBygPlusg.divide(my2, 9, BigDecimal.ROUND_FLOOR);
BigDecimal savegdiff = saveg.subtract(nBygPlusgHalf);
if (savegdiff.compareTo(epsilon) == -1) {
firsttime = 0;
} else {
saveg = nBygPlusgHalf;
}
} while (firsttime > 1);
System.out.println(
"For " + mys + "\nLength: " + mys.length() + "\nThe Square Root is " + saveg);
}
示例2: formatSignificant
public static String formatSignificant(double value, int significant) {
MathContext mathContext = new MathContext(significant, RoundingMode.DOWN);
BigDecimal bigDecimal = new BigDecimal(value, mathContext);
return bigDecimal.toPlainString();
}
示例3: main
public static void main(String [] argv) {
// For each member of the family, make sure
// rm == valueOf(rm.toString())
for(RoundingMode rm: RoundingMode.values()) {
if (rm != RoundingMode.valueOf(rm.toString())) {
throw new RuntimeException("Bad roundtrip conversion of " +
rm.toString());
}
}
// Test that mapping of old integers to new values is correct
if (RoundingMode.valueOf(BigDecimal.ROUND_CEILING) !=
RoundingMode.CEILING) {
throw new RuntimeException("Bad mapping for ROUND_CEILING");
}
if (RoundingMode.valueOf(BigDecimal.ROUND_DOWN) !=
RoundingMode.DOWN) {
throw new RuntimeException("Bad mapping for ROUND_DOWN");
}
if (RoundingMode.valueOf(BigDecimal.ROUND_FLOOR) !=
RoundingMode.FLOOR) {
throw new RuntimeException("Bad mapping for ROUND_FLOOR");
}
if (RoundingMode.valueOf(BigDecimal.ROUND_HALF_DOWN) !=
RoundingMode.HALF_DOWN) {
throw new RuntimeException("Bad mapping for ROUND_HALF_DOWN");
}
if (RoundingMode.valueOf(BigDecimal.ROUND_HALF_EVEN) !=
RoundingMode.HALF_EVEN) {
throw new RuntimeException("Bad mapping for ROUND_HALF_EVEN");
}
if (RoundingMode.valueOf(BigDecimal.ROUND_HALF_UP) !=
RoundingMode.HALF_UP) {
throw new RuntimeException("Bad mapping for ROUND_HALF_UP");
}
if (RoundingMode.valueOf(BigDecimal.ROUND_UNNECESSARY) !=
RoundingMode.UNNECESSARY) {
throw new RuntimeException("Bad mapping for ROUND_UNNECESARY");
}
}