java.math.BigDecimal.longValue()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.longValue()方法的一些代码示例，展示了BigDecimal.longValue()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.longValue()方法的具体详情如下：
包路径：java.math.BigDecimal
类名称：BigDecimal
方法名：longValue

BigDecimal.longValue介绍

[英]Returns this BigDecimal as an long value. Any fractional part is discarded. If the integral part of this is too big to be represented as an long, then this % 264 is returned.
[中]将此BigDecimal作为长值返回。任何小数部分都将被丢弃。如果该值的整数部分太大，无法表示为long，则返回此%264。

代码示例

代码示例来源：origin: aws/aws-sdk-java

public static Date parseUnixTimestampInMillis(String dateString) {
  if (dateString == null)
    return null;
  try {
    BigDecimal dateValue = new BigDecimal(dateString);
    return new Date(dateValue.longValue());
  } catch (NumberFormatException nfe) {
    throw new SdkClientException("Unable to parse date : "
                   + dateString, nfe);
  }
}

代码示例来源：origin: prestodb/presto

/**
 * Divides the dividend by divisor. Rounding of result occurs
 * as per the roundingMode.
 *
 * @param dividend  the dividend
 * @param divisor  the divisor
 * @param roundingMode  the desired rounding mode
 * @return the division result as per the specified rounding mode
 * @throws ArithmeticException if the operation overflows or the divisor is zero
 */
public static long safeDivide(long dividend, long divisor, RoundingMode roundingMode) {
  if (dividend == Long.MIN_VALUE && divisor == -1L) {
    throw new ArithmeticException("Multiplication overflows a long: " + dividend + " / " + divisor);
  }
  BigDecimal dividendBigDecimal = new BigDecimal(dividend);
  BigDecimal divisorBigDecimal = new BigDecimal(divisor);
  return dividendBigDecimal.divide(divisorBigDecimal, roundingMode).longValue();
}

代码示例来源：origin: wildfly/wildfly

@Override
public synchronized long getAverageSessionAliveTime() {
  //this method needs to be synchronised to make sure the session count and the total are in sync
  if(expiredSessionCount == 0) {
    return 0;
  }
  return new BigDecimal(totalSessionLifetime).divide(BigDecimal.valueOf(expiredSessionCount), MathContext.DECIMAL128).longValue();
}

代码示例来源：origin: knowm/XChange

private static Date convertBigDecimalTimestampToDate(BigDecimal timestamp) {
 BigDecimal timestampInMillis = timestamp.multiply(new BigDecimal("1000"));
 return new Date(timestampInMillis.longValue());
}

代码示例来源：origin: alibaba/TProfiler

/**
   * @param v1
   * @param v2
   * @return
   */
  public static long div(long v1, long v2) {
    BigDecimal b1 = new BigDecimal(v1);
    BigDecimal b2 = new BigDecimal(v2);
    return b1.divide(b2, 0, BigDecimal.ROUND_HALF_UP).longValue();
  }
}

代码示例来源：origin: alibaba/TProfiler

/**
 * @param v1
 * @param v2
 * @return
 */
public static long add(long v1, long v2) {
  BigDecimal b1 = new BigDecimal(v1);
  BigDecimal b2 = new BigDecimal(v2);
  return b1.add(b2).longValue();
}

代码示例来源：origin: knowm/XChange

private BigDecimal roundUp(BigDecimal x) {
 long n = x.longValue();
 return new BigDecimal(x.equals(new BigDecimal(n)) ? n : n + 1);
}

代码示例来源：origin: knowm/XChange

private BigDecimal roundUp(BigDecimal x) {
 long n = x.longValue();
 return new BigDecimal(x.equals(new BigDecimal(n)) ? n : n + 1);
}

代码示例来源：origin: knowm/XChange

private BigDecimal roundUp(BigDecimal x) {
 long n = x.longValue();
 return new BigDecimal(x.equals(new BigDecimal(n)) ? n : n + 1);
}

代码示例来源：origin: joda-time/joda-time

/**
 * Divides the dividend by divisor. Rounding of result occurs
 * as per the roundingMode.
 *
 * @param dividend  the dividend
 * @param divisor  the divisor
 * @param roundingMode  the desired rounding mode
 * @return the division result as per the specified rounding mode
 * @throws ArithmeticException if the operation overflows or the divisor is zero
 */
public static long safeDivide(long dividend, long divisor, RoundingMode roundingMode) {
  if (dividend == Long.MIN_VALUE && divisor == -1L) {
    throw new ArithmeticException("Multiplication overflows a long: " + dividend + " / " + divisor);
  }
  BigDecimal dividendBigDecimal = new BigDecimal(dividend);
  BigDecimal divisorBigDecimal = new BigDecimal(divisor);
  return dividendBigDecimal.divide(divisorBigDecimal, roundingMode).longValue();
}

代码示例来源：origin: JodaOrg/joda-time

/**
 * Divides the dividend by divisor. Rounding of result occurs
 * as per the roundingMode.
 *
 * @param dividend  the dividend
 * @param divisor  the divisor
 * @param roundingMode  the desired rounding mode
 * @return the division result as per the specified rounding mode
 * @throws ArithmeticException if the operation overflows or the divisor is zero
 */
public static long safeDivide(long dividend, long divisor, RoundingMode roundingMode) {
  if (dividend == Long.MIN_VALUE && divisor == -1L) {
    throw new ArithmeticException("Multiplication overflows a long: " + dividend + " / " + divisor);
  }
  BigDecimal dividendBigDecimal = new BigDecimal(dividend);
  BigDecimal divisorBigDecimal = new BigDecimal(divisor);
  return dividendBigDecimal.divide(divisorBigDecimal, roundingMode).longValue();
}

代码示例来源：origin: stackoverflow.com

BigDecimal bd = new BigDecimal(300000);

NumberFormat formatter = NumberFormat.getInstance(new Locale("en_US"));

System.out.println(formatter.format(bd.longValue()));

代码示例来源：origin: apache/hive

protected BigDecimal trunc(BigDecimal input, int scale) {
 BigDecimal output = new BigDecimal(0);
 BigDecimal pow = BigDecimal.valueOf(Math.pow(10, Math.abs(scale)));
 if (scale >= 0) {
  pow = BigDecimal.valueOf(Math.pow(10, scale));
  if (scale != 0) {
   long longValue = input.multiply(pow).longValue();
   output = BigDecimal.valueOf(longValue).divide(pow);
  } else {
   output = BigDecimal.valueOf(input.longValue());
  }
 } else {
  long longValue2 = input.divide(pow).longValue();
  output = BigDecimal.valueOf(longValue2).multiply(pow);
 }
 return output;
}

代码示例来源：origin: apache/drill

protected BigDecimal trunc(BigDecimal input, int scale) {
 BigDecimal output = new BigDecimal(0);
 BigDecimal pow = BigDecimal.valueOf(Math.pow(10, Math.abs(scale)));
 if (scale >= 0) {
  pow = BigDecimal.valueOf(Math.pow(10, scale));
  if (scale != 0) {
   long longValue = input.multiply(pow).longValue();
   output = BigDecimal.valueOf(longValue).divide(pow);
  } else {
   output = BigDecimal.valueOf(input.longValue());
  }
 } else {
  long longValue2 = input.divide(pow).longValue();
  output = BigDecimal.valueOf(longValue2).multiply(pow);
 }
 return output;
}

代码示例来源：origin: aws/aws-sdk-java

/**
 * Parses the given date string returned by the AWS service into a Date
 * object.
 */
public static Date parseServiceSpecificDate(String dateString) {
  if (dateString == null)
    return null;
  try {
    BigDecimal dateValue = new BigDecimal(dateString);
    return new Date(dateValue.scaleByPowerOfTen(
        AWS_DATE_MILLI_SECOND_PRECISION).longValue());
  } catch (NumberFormatException nfe) {
    throw new SdkClientException("Unable to parse date : "
        + dateString, nfe);
  }
}

代码示例来源：origin: oracle/helidon

static Function<Object, Object> timeConverter(TimeUnit from) {
    switch (from) {
    case NANOSECONDS:
      return (o) -> String.valueOf(new BigDecimal(String.valueOf(o)).doubleValue() / NANOSECONDS);
    case MICROSECONDS:
      return (o) -> String.valueOf(new BigDecimal(String.valueOf(o)).doubleValue() / MICROSECONDS);
    case MILLISECONDS:
      return (o) -> String.valueOf(new BigDecimal(String.valueOf(o)).doubleValue() / MILLISECONDS);
    case SECONDS:
      return String::valueOf;
    default:
      return (o) -> String.valueOf(TimeUnit.SECONDS.convert(new BigDecimal(String.valueOf(o)).longValue(), from));
    }
  }
}

代码示例来源：origin: apache/incubator-pinot

/**
 * Convert human readable datasize to bytes
 * @param val string to parse
 * @return returns -1 in case of invalid value
 */
public static long toBytes(@Nullable String val) {
 if (val == null) {
  return -1;
 }
 Matcher matcher = STORAGE_VAL_PATTERN.matcher(val);
 if (!matcher.matches()) {
  return -1;
 }
 String number = matcher.group(1);
 String unit = matcher.group(2);
 if (unit == null) {
  unit = "B";
 }
 long multiplier = MULTIPLIER.get(unit.toUpperCase());
 BigDecimal bytes = new BigDecimal(number);
 return bytes.multiply(BigDecimal.valueOf(multiplier)).longValue();
}

代码示例来源：origin: json-path/JsonPath

private static Number unwrapNumber(final Number n) {
  Number unwrapped;
  if (!isPrimitiveNumber(n)) {
    BigDecimal bigDecimal = new BigDecimal(n.toString());
    if (bigDecimal.scale() <= 0) {
      if (bigDecimal.compareTo(new BigDecimal(Integer.MAX_VALUE)) <= 0) {
        unwrapped = bigDecimal.intValue();
      } else if (bigDecimal.compareTo(new BigDecimal(Long.MAX_VALUE)) <= 0){
        unwrapped = bigDecimal.longValue();
      } else {
        unwrapped = bigDecimal;
      }
    } else {
      final double doubleValue = bigDecimal.doubleValue();
      if (BigDecimal.valueOf(doubleValue).compareTo(bigDecimal) != 0) {
        unwrapped = bigDecimal;
      } else {
        unwrapped = doubleValue;
      }
    }
  } else {
    unwrapped = n;
  }
  return unwrapped;
}

代码示例来源：origin: apache/hive

public static Timestamp decimalToTimestamp(HiveDecimalV1 dec) {
 try {
  BigDecimal nanoInstant = dec.bigDecimalValue().multiply(BILLION_BIG_DECIMAL);
  int nanos = nanoInstant.remainder(BILLION_BIG_DECIMAL).intValue();
  if (nanos < 0) {
   nanos += 1000000000;
  }
  long seconds =
    nanoInstant.subtract(new BigDecimal(nanos)).divide(BILLION_BIG_DECIMAL).longValue();
  Timestamp t = new Timestamp(seconds * 1000);
  t.setNanos(nanos);
  return t;
 } catch (NumberFormatException nfe) {
  return null;
 } catch (IllegalArgumentException iae) {
  return null;
 }
}

代码示例来源：origin: apache/hive

public static Timestamp decimalToTimestamp(HiveDecimalV1 dec) {
 try {
  BigDecimal nanoInstant = dec.bigDecimalValue().multiply(BILLION_BIG_DECIMAL);
  int nanos = nanoInstant.remainder(BILLION_BIG_DECIMAL).intValue();
  if (nanos < 0) {
   nanos += 1000000000;
  }
  long seconds =
    nanoInstant.subtract(new BigDecimal(nanos)).divide(BILLION_BIG_DECIMAL).longValue();
  return Timestamp.ofEpochSecond(seconds, nanos);
 } catch (IllegalArgumentException | DateTimeException nfe) {
  return null;
 }
}

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