org.apache.sis.math.Vector.longValue()方法的使用及代码示例
本文整理了Java中org.apache.sis.math.Vector.longValue()方法的一些代码示例，展示了Vector.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。Vector.longValue()方法的具体详情如下：
包路径：org.apache.sis.math.Vector
类名称：Vector
方法名：longValue
Vector.longValue介绍
[英]Returns the value at the given index as a long. If this vector uses floating point values, the value is rounded to the nearest integer.
The default implementation delegates to #doubleValue(int) and verifies if the result can be rounded to a long with an error not greater than 0.5. Subclasses that store or compute their values with an integer type should override this method.
[中]将给定索引处的值返回为long。如果此向量使用浮点值，则该值将四舍五入到最接近的整数。
默认实现将委托给#doubleValue（int），并验证结果是否可以四舍五入到long，且误差不大于0.5。使用整数类型存储或计算其值的子类应重写此方法。
代码示例
代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns the value at the given index.
*/
@Override
public long longValue(int index) {
final Vector v;
if (index < limit) {
v = first;
} else {
v = second;
index -= limit;
}
return v.longValue(index);
}代码示例来源：origin: apache/sis
/**
* Returns the value at the given index.
*/
@Override
public long longValue(int index) {
final Vector v;
if (index < limit) {
v = first;
} else {
v = second;
index -= limit;
}
return v.longValue(index);
}代码示例来源：origin: apache/sis
@Override public long longValue (int i) {return Vector.this.longValue (indices[i]);}
@Override public int intValue (int i) {return Vector.this.intValue (indices[i]);}代码示例来源：origin: org.apache.sis.core/sis-utility
@Override public long longValue (int i) {return Vector.this.longValue (indices[i]);}
@Override public int intValue (int i) {return Vector.this.intValue (indices[i]);}代码示例来源：origin: apache/sis
/**
* Returns the instant at the given index.
*/
@Override
public Instant get(final int index) {
return Instant.ofEpochMilli(times.longValue(index));
}
}代码示例来源：origin: org.apache.sis.core/sis-feature
/**
* Returns the instant at the given index.
*/
@Override
public Instant get(final int index) {
return Instant.ofEpochMilli(times.longValue(index));
}
}代码示例来源：origin: org.apache.sis.core/sis-utility
@Override public long longValue (int index) {return Vector.this.longValue (toBacking(index));}
@Override public int intValue (int index) {return Vector.this.intValue (toBacking(index));}代码示例来源：origin: apache/sis
@Override public final long longValue (int i) {return base.longValue (toBase(i));}
@Override public final int intValue (int i) {return base.intValue (toBase(i));}代码示例来源：origin: apache/sis
@Override public long longValue (int index) {return Vector.this.longValue (toBacking(index));}
@Override public int intValue (int index) {return Vector.this.intValue (toBacking(index));}代码示例来源：origin: apache/sis
/**
* Computes the tile width or height from the other size,
* or returns a negative number if the size can not be computed.
*
* @param knownSize the tile width or height.
* @return the tile width if the known size was height, or the tile height if the known size was width,
* or a negative number if the width or height can not be computed.
* @throws ArithmeticException if the result overflows.
*/
private int computeTileSize(final int knownSize) {
final int n = tileByteCounts.size();
if (n != 0) {
final long count = tileByteCounts.longValue(0);
int i = 0;
do if (++i == n) {
// At this point, we verified that all vector values are equal.
final long length = pixelToByteCount(knownSize);
if (count % length != 0) break;
return Math.toIntExact(count / length);
} while (tileByteCounts.longValue(i) == n);
}
return -1;
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns the value at the given index as a {@code short}.
* If this vector uses floating point values, the value is rounded to the nearest integer.
*
* <p>The default implementation delegates to {@link #longValue(int)} and verifies if the result
* fits in the {@code short} type. Subclasses that store or compute their values with the {@code short}
* or {@code byte} type should override this method.</p>
*
* @param index the index in the [0 … {@linkplain #size() size}-1] range.
* @return the value at the given index.
* @throws IndexOutOfBoundsException if the given index is out of bounds.
* @throws NullPointerException if the value is {@code null} (never happen if this vector wraps an array of primitive type).
* @throws NumberFormatException if the value is stored as a {@code String} and can not be parsed.
* @throws ArithmeticException if the value is too large for the capacity of the {@code short} type.
*/
public short shortValue(final int index) {
final long value = longValue(index);
if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
return (short) value;
}
throw canNotConvert(index, short.class);
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns the value at the given index as an {@code int}.
* If this vector uses floating point values, the value is rounded to the nearest integer.
*
* <p>The default implementation delegates to {@link #longValue(int)} and verifies if the result
* fits in the {@code int} type. Subclasses that store or compute their values with the {@code int},
* {@code short} or {@code byte} type should override this method.</p>
*
* @param index the index in the [0 … {@linkplain #size() size}-1] range.
* @return the value at the given index.
* @throws IndexOutOfBoundsException if the given index is out of bounds.
* @throws NullPointerException if the value is {@code null} (never happen if this vector wraps an array of primitive type).
* @throws NumberFormatException if the value is stored as a {@code String} and can not be parsed.
* @throws ArithmeticException if the value is too large for the capacity of the {@code int} type.
*/
public int intValue(final int index) {
final long value = longValue(index);
if (value >= Integer.MIN_VALUE && value <= Integer.MAX_VALUE) {
return (int) value;
}
throw canNotConvert(index, int.class);
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns the value at the given index as a {@code byte}.
* If this vector uses floating point values, the value is rounded to the nearest integer.
*
* <p>The default implementation delegates to {@link #longValue(int)} and verifies if the result
* fits in the {@code byte} type. Subclasses that store or compute their values with the {@code byte}
* type should override this method.</p>
*
* @param index the index in the [0 … {@linkplain #size() size}-1] range.
* @return the value at the given index.
* @throws IndexOutOfBoundsException if the given index is out of bounds.
* @throws NullPointerException if the value is {@code null} (never happen if this vector wraps an array of primitive type).
* @throws NumberFormatException if the value is stored as a {@code String} and can not be parsed.
* @throws ArithmeticException if the value is too large for the capacity of the {@code byte} type.
*/
public byte byteValue(final int index) {
final long value = longValue(index);
if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
return (byte) value;
}
throw canNotConvert(index, byte.class);
}代码示例来源：origin: apache/sis
/**
* Returns the value at the given index as an {@code int}.
* If this vector uses floating point values, the value is rounded to the nearest integer.
*
* <p>The default implementation delegates to {@link #longValue(int)} and verifies if the result
* fits in the {@code int} type. Subclasses that store or compute their values with the {@code int},
* {@code short} or {@code byte} type should override this method.</p>
*
* @param index the index in the [0 … {@linkplain #size() size}-1] range.
* @return the value at the given index.
* @throws IndexOutOfBoundsException if the given index is out of bounds.
* @throws NullPointerException if the value is {@code null} (never happen if this vector wraps an array of primitive type).
* @throws NumberFormatException if the value is stored as a {@code String} and can not be parsed.
* @throws ArithmeticException if the value is too large for the capacity of the {@code int} type.
*/
public int intValue(final int index) {
final long value = longValue(index);
if (value >= Integer.MIN_VALUE && value <= Integer.MAX_VALUE) {
return (int) value;
}
throw canNotConvert(index, int.class);
}代码示例来源：origin: apache/sis
/**
* Returns the value at the given index as a {@code byte}.
* If this vector uses floating point values, the value is rounded to the nearest integer.
*
* <p>The default implementation delegates to {@link #longValue(int)} and verifies if the result
* fits in the {@code byte} type. Subclasses that store or compute their values with the {@code byte}
* type should override this method.</p>
*
* @param index the index in the [0 … {@linkplain #size() size}-1] range.
* @return the value at the given index.
* @throws IndexOutOfBoundsException if the given index is out of bounds.
* @throws NullPointerException if the value is {@code null} (never happen if this vector wraps an array of primitive type).
* @throws NumberFormatException if the value is stored as a {@code String} and can not be parsed.
* @throws ArithmeticException if the value is too large for the capacity of the {@code byte} type.
*/
public byte byteValue(final int index) {
final long value = longValue(index);
if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
return (byte) value;
}
throw canNotConvert(index, byte.class);
}代码示例来源：origin: apache/sis
/**
* Returns the value at the given index as a {@code short}.
* If this vector uses floating point values, the value is rounded to the nearest integer.
*
* <p>The default implementation delegates to {@link #longValue(int)} and verifies if the result
* fits in the {@code short} type. Subclasses that store or compute their values with the {@code short}
* or {@code byte} type should override this method.</p>
*
* @param index the index in the [0 … {@linkplain #size() size}-1] range.
* @return the value at the given index.
* @throws IndexOutOfBoundsException if the given index is out of bounds.
* @throws NullPointerException if the value is {@code null} (never happen if this vector wraps an array of primitive type).
* @throws NumberFormatException if the value is stored as a {@code String} and can not be parsed.
* @throws ArithmeticException if the value is too large for the capacity of the {@code short} type.
*/
public short shortValue(final int index) {
final long value = longValue(index);
if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
return (short) value;
}
throw canNotConvert(index, short.class);
}代码示例来源：origin: apache/sis
/**
* Creates a new compressed vector initialized to a copy of the data provided by the given vector.
*
* @param source the vector to copy.
* @param increment the common divisor of all (sample minus offset) values.
* @param offset the minimal value in the source vector.
* @param delta the maximal value in the source vector minus {@code offset} divided by {@code increment}.
*/
private PackedVector(final Vector source, final long increment, final long offset, final int delta) {
this.increment = increment;
this.offset = offset;
final int length = source.size();
data = new IntegerList(length, delta, true);
for (int i=0; i<length; i++) {
data.setInt(i, Math.toIntExact((source.longValue(i) - offset) / increment));
}
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Creates a new compressed vector initialized to a copy of the data provided by the given vector.
*
* @param source the vector to copy.
* @param increment the common divisor of all (sample minus offset) values.
* @param offset the minimal value in the source vector.
* @param delta the maximal value in the source vector minus {@code offset} divided by {@code increment}.
*/
private PackedVector(final Vector source, final long increment, final long offset, final int delta) {
this.increment = increment;
this.offset = offset;
final int length = source.size();
data = new IntegerList(length, delta, true);
for (int i=0; i<length; i++) {
data.setInt(i, JDK8.toIntExact((source.longValue(i) - offset) / increment));
}
}代码示例来源：origin: apache/sis
/**
* Tests the case where values in a grid are repeated vertically.
*/
@Test
public void testVertical() {
Vector vec = Vector.create(new int[] {
10, 12, 15, 18,
10, 12, 15, 18,
10, 12, 15, 18}, false);
vec = new RepeatedVector(vec, vec.repetitions(), 0);
assertArrayEquals(new int[] {1,4}, vec.repetitions());
assertEquals(10, vec.intValue ( 0));
assertEquals(12, vec.shortValue( 1));
assertEquals(15, vec.longValue ( 2));
assertEquals(18, vec.intValue ( 3));
assertEquals(10, vec.intValue ( 4));
assertEquals(18, vec.shortValue( 7));
assertEquals(10, vec.longValue ( 8));
assertEquals(15, vec.intValue (10));
Vector sub = vec.subList(0, 4);
assertFalse("Expected the backing array.", sub instanceof RepeatedVector);
assertArrayEquals(new float[] {10, 12, 15, 18}, sub.floatValues(), (float) STRICT);
}代码示例来源：origin: apache/sis
/**
* Tests the case where values in a grid are repeated horizontally.
*/
@Test
public void testHorizontal() {
Vector vec = Vector.create(new int[] {
10, 10, 10, 10,
12, 12, 12, 12,
15, 15, 15, 15}, false);
vec = new RepeatedVector(vec, vec.repetitions(), 0);
assertArrayEquals(new int[] {4}, vec.repetitions());
assertEquals(10, vec.intValue ( 0));
assertEquals(10, vec.shortValue( 1));
assertEquals(10, vec.longValue ( 2));
assertEquals(10, vec.intValue ( 3));
assertEquals(12, vec.intValue ( 4));
assertEquals(12, vec.shortValue( 7));
assertEquals(15, vec.longValue ( 8));
assertEquals(15, vec.intValue (11));
Vector sub = vec.subSampling(0, 4, 3);
assertFalse("Expected the backing array.", sub instanceof RepeatedVector);
assertArrayEquals(new float[] {10, 12, 15}, sub.floatValues(), (float) STRICT);
}内容来源于网络，如有侵权，请联系作者删除！
