java.math.BigDecimal.toEngineeringString()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.math.BigDecimal.toEngineeringString()方法的一些代码示例，展示了BigDecimal.toEngineeringString()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。BigDecimal.toEngineeringString()方法的具体详情如下：
包路径：java.math.BigDecimal
类名称：BigDecimal
方法名：toEngineeringString

BigDecimal.toEngineeringString介绍

[英]Returns a string representation of this BigDecimal. This representation always prints all significant digits of this value.

If the scale is negative or if scale - precision >= 6 then engineering notation is used. Engineering notation is similar to the scientific notation except that the exponent is made to be a multiple of 3 such that the integer part is >= 1 and < 1000.
[中]返回此BigDecimal的字符串表示形式。此表示法始终打印此值的所有有效数字。
如果标度为负值或标度-精度>=6，则使用工程符号。工程表示法与科学表示法类似，不同之处在于指数是3的倍数，因此整数部分大于等于1且小于1000。

代码示例

代码示例来源：origin: zendesk/maxwell

@Override
  public String toSQL(Object value) {
    BigDecimal d = (BigDecimal) value;

    return d.toEngineeringString();
  }
}

代码示例来源：origin: stackoverflow.com

BigDecimal bigDecimal = BigDecimal.valueOf(100000.0)
          .multiply(BigDecimal.valueOf(100d))
          .stripTrailingZeros();
System.out.println("plain      : " + bigDecimal.toPlainString());
System.out.println("scientific : " + bigDecimal.toEngineeringString());

代码示例来源：origin: UniversaBlockchain/universa

public String toEngineeringString() {
  return value.toEngineeringString();
}

代码示例来源：origin: stackoverflow.com

public static String formatDecimal(BigDecimal b, int max) {
  return b.setScale(max, RoundingMode.HALF_EVEN).stripTrailingZeros().toEngineeringString();
}

代码示例来源：origin: stackoverflow.com

BigDecimal val1=new BigDecimal(97346822*3f);
BigDecimal val2=new BigDecimal(97346822*3.0);
System.out.println(val1.subtract(val2, MathContext.UNLIMITED).toEngineeringString());
System.out.println(val1.equals(val2));
System.out.println(val1.compareTo(val2));

代码示例来源：origin: stackoverflow.com

BigDecimal bd = new BigDecimal("8678679532108467840356746356832624562456786656736.6456442652456345673656");
int decimalOffset = 0;
if (bd.toPlainString().indexOf('.')>=0)
    decimalOffset=1;
System.out.println(bd.toPlainString().length()-decimalOffset<32 ? bd.toPlainString() : bd.toEngineeringString());

代码示例来源：origin: org.hjson/hjson

@Override
public String toString() {
 long l=(long)value;
 if (l==value) return Long.toString(l);
 String res=BigDecimal.valueOf(value).toEngineeringString();
 if (res.endsWith(".0")) return res.substring(0, res.length()-2);
 else if (res.contains("E")) {
  res=Double.toString(value);
  res=res.replace("E-", "e-").replace("E", "e+");
 }
 return res;
}

代码示例来源：origin: stackoverflow.com

BigDecimal val1=new BigDecimal(3.1f);
BigDecimal val2=new BigDecimal(3.1);
System.out.println(val1.subtract(val2, MathContext.UNLIMITED).toEngineeringString()); //-95.367431729442841970012523233890533447265625E-9
System.out.println(val1.equals(val2)); //false
System.out.println(val1.compareTo(val2)); // -1
System.out.println(val1.precision()); // 22
System.out.println(val2.precision()); // 52

代码示例来源：origin: hjson/hjson-java

@Override
public String toString() {
 long l=(long)value;
 if (l==value) return Long.toString(l);
 String res=BigDecimal.valueOf(value).toEngineeringString();
 if (res.endsWith(".0")) return res.substring(0, res.length()-2);
 else if (res.contains("E")) {
  res=Double.toString(value);
  res=res.replace("E-", "e-").replace("E", "e+");
 }
 return res;
}

代码示例来源：origin: net.razorvine/serpent

protected void serialize_bigdecimal(BigDecimal decimal, StringWriter sw, int level)
{
  serialize_string(decimal.toEngineeringString(), sw, level);
}

代码示例来源：origin: stackoverflow.com

public class ExampleWithoutGenericSingletonFactory {

  static UnaryFunction<Object> ID_FUNC = new UnaryFunction<Object>() {
    public Object apply(Object arg) {
      return arg;
    }
  };

  public static void main(String[] args) {
    BigDecimal b = new BigDecimal("1234.1241234");
    BigDecimal b1 = (BigDecimal)(ID_FUNC.apply(b)); // have to cast here >_<
    System.out.println("engineeringstring val of b1 = " 
    + b1.toEngineeringString());
  }
}

代码示例来源：origin: xap/xap

public void writeDecimal(BigDecimal value) {
  String rawValue = value.toEngineeringString();
  writeString(rawValue);
}

代码示例来源：origin: stackoverflow.com

BigDecimal i = new BigDecimal(0.025);
 int n = 2;
 BigDecimal h1 = new BigDecimal(2000);
 BigDecimal h2 = new BigDecimal(4000);
 BigDecimal y1 = ((BigDecimal.ONE.add(i)).pow(n)).multiply(h1);
 BigDecimal y2 = ((BigDecimal.ONE.add(i)).pow(n)).multiply(h2);
 BigDecimal result =  y1.add(y2);
 System.out.println(result.toEngineeringString());

代码示例来源：origin: net.razorvine/pyrolite

void put_decimal(BigDecimal d) throws IOException {
  //"cdecimal\nDecimal\nU\n12345.6789\u0085R."
  out.write(Opcodes.GLOBAL);
  out.write("decimal\nDecimal\n".getBytes());
  put_string(d.toEngineeringString());
  out.write(Opcodes.TUPLE1);
  out.write(Opcodes.REDUCE);
  writeMemo(d);
}

代码示例来源：origin: org.spark-project/pyrolite

void put_decimal(BigDecimal d) throws IOException {
  //"cdecimal\nDecimal\nU\n12345.6789\u0085R."
  out.write(Opcodes.GLOBAL);
  out.write("decimal\nDecimal\n".getBytes());
  put_string(d.toEngineeringString());
  out.write(Opcodes.TUPLE1);
  out.write(Opcodes.REDUCE);
  writeMemo(d);
}

代码示例来源：origin: net.sf.mbus4j/mbus4j-core

@Override
protected void accumulateDatatoJSON(JSONObject json) {
  json.accumulate("data", getValue().toEngineeringString());
}

代码示例来源：origin: com.facebook.presto.cassandra/cassandra-driver

public final void putLongDouble(final BigDecimal value) {
  byte[] ld = new byte[Type.LONGDOUBLE.size()];
  Foreign.getInstance().longDoubleFromString(value.toEngineeringString(), ld, 0, Type.LONGDOUBLE.size());
  getObjectBuffer().putArray(paramIndex, ld, 0, ld.length, ObjectBuffer.IN);
  paramOffset += PARAM_SIZE;
  ++paramIndex;
}

代码示例来源：origin: io.prestosql.cassandra/cassandra-driver

public final void putLongDouble(final BigDecimal value) {
  byte[] ld = new byte[Type.LONGDOUBLE.size()];
  Foreign.getInstance().longDoubleFromString(value.toEngineeringString(), ld, 0, Type.LONGDOUBLE.size());
  getObjectBuffer().putArray(paramIndex, ld, 0, ld.length, ObjectBuffer.IN);
  paramOffset += PARAM_SIZE;
  ++paramIndex;
}

代码示例来源：origin: com.cloudbees.util/jnr-unixsocket-nodep

public final void putLongDouble(final BigDecimal value) {
  byte[] ld = new byte[Type.LONGDOUBLE.size()];
  Foreign.getInstance().longDoubleFromString(value.toEngineeringString(), ld, 0, Type.LONGDOUBLE.size());
  getObjectBuffer().putArray(paramIndex, ld, 0, ld.length, ObjectBuffer.IN);
  paramOffset += PARAM_SIZE;
  ++paramIndex;
}

代码示例来源：origin: RoboZonky/robozonky

@Test
void ipmt() {
  final BigDecimal rate = new BigDecimal("0.1");
  final BigDecimal principal = BigDecimal.valueOf(100);
  final int maxTerm = 10;
  assertSoftly(softly -> {
    softly.assertThat(FinancialUtil.ipmt(rate, 1, maxTerm, principal).toEngineeringString())
        .isEqualTo(BigDecimal.TEN.negate().toEngineeringString());
    softly.assertThat(FinancialUtil.ipmt(rate, maxTerm, maxTerm, principal)).isLessThan(BigDecimal.ZERO);
  });
}

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