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Added multiplication and division methods for the AssetAmount class

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This commit is contained in:
Nelson R. Perez 2017-04-06 12:22:57 -05:00
parent 55bc4fb256
commit aa35925718
1 changed files with 57 additions and 4 deletions
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61
graphenej/src/main/java/de/bitsharesmunich/graphenej/AssetAmount.java
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@ -1,17 +1,27 @@
package de.bitsharesmunich.graphenej;
import com.google.common.math.DoubleMath;
import com.google.common.primitives.Bytes;
import com.google.common.primitives.UnsignedLong;
import com.google.gson.*;
import de.bitsharesmunich.graphenej.errors.IncompatibleOperation;
import de.bitsharesmunich.graphenej.interfaces.ByteSerializable;
import de.bitsharesmunich.graphenej.interfaces.JsonSerializable;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.io.ByteArrayOutputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.IOException;
import java.lang.reflect.Type;
import java.math.RoundingMode;
import de.bitsharesmunich.graphenej.errors.IncompatibleOperation;
import de.bitsharesmunich.graphenej.interfaces.ByteSerializable;
import de.bitsharesmunich.graphenej.interfaces.JsonSerializable;
/**
* Created by nelson on 11/7/16.
@ -73,6 +83,49 @@ public class AssetAmount implements ByteSerializable, JsonSerializable {
return new AssetAmount(result, asset);
}
/**
* Multiplies the current amount by a factor provided as the first parameter. The second parameter
* specifies the rounding method to be used.
* @param factor: The multiplying factor
* @param roundingMode: The rounding mode as an instance of the {@link RoundingMode} class
* @return The same AssetAmount instance, but with the changed amount value.
*/
public AssetAmount multiplyBy(double factor, RoundingMode roundingMode){
this.amount = UnsignedLong.valueOf(DoubleMath.roundToLong(this.amount.longValue() * factor, roundingMode));
return this;
}
/**
* Multiplies the current amount by a factor, using the {@link RoundingMode#HALF_DOWN} constant.
* @param factor: The multiplying factor
* @return The same AssetAmount instance, but with the changed amount value.
*/
public AssetAmount multiplyBy(double factor){
return this.multiplyBy(factor, RoundingMode.HALF_DOWN);
}
/**
* Divides the current amount by a divisor provided as the first parameter. The second parameter
* specifies the rounding method to be used.
* @param divisor: The divisor
* @return: The same AssetAMount instance, but with the divided amount value
*/
public AssetAmount dividedBy(double divisor, RoundingMode roundingMode){
this.amount = UnsignedLong.valueOf(DoubleMath.roundToLong(this.amount.longValue() / divisor, roundingMode));
return this;
}
/**
* Divides the current amount by a divisor provided as the first parameter, using
* the {@link RoundingMode#HALF_DOWN} constant
* @param divisor: The divisor
* @return: The same AssetAMount instance, but with the divided amount value
*/
public AssetAmount dividedBy(double divisor){
return this.dividedBy(divisor, RoundingMode.HALF_DOWN);
}
public void setAmount(UnsignedLong amount){
this.amount = amount;
}