java.lang.Math.nextDown()方法的使用及代码示例
本文整理了Java中java.lang.Math.nextDown()方法的一些代码示例，展示了Math.nextDown()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。Math.nextDown()方法的具体详情如下：
包路径：java.lang.Math
类名称：Math
方法名：nextDown
Math.nextDown介绍
暂无
代码示例
代码示例来源：origin: org.apache.lucene/lucene-core
/**
* Return the greatest float that compares less than {@code f} consistently
* with {@link Float#compare}. The only difference with
* {@link Math#nextDown(float)} is that this method returns {@code -0f} when
* the argument is {@code +0f}.
*/
public static float nextDown(float f) {
if (Float.floatToIntBits(f) == 0) { // +0f
return -0f;
}
return Math.nextDown(f);
}代码示例来源：origin: org.apache.lucene/lucene-core
/**
* Return the greatest double that compares less than {@code d} consistently
* with {@link Double#compare}. The only difference with
* {@link Math#nextDown(double)} is that this method returns {@code -0d} when
* the argument is {@code +0d}.
*/
public static double nextDown(double d) {
if (Double.doubleToLongBits(d) == 0L) { // +0d
return -0f;
}
return Math.nextDown(d);
}代码示例来源：origin: google/error-prone
@Override
Float nextNumber(Number actual) {
float number = actual.floatValue();
return Math.min(Math.nextUp(number) - number, number - Math.nextDown(number));
}代码示例来源：origin: google/error-prone
@Override
Double nextNumber(Number actual) {
double number = actual.doubleValue();
return Math.min(Math.nextUp(number) - number, number - Math.nextDown(number));
}代码示例来源：origin: org.apache.lucene/lucene-core
/**
* Quantizes double (64 bit) latitude into 32 bits (rounding down: in the direction of -90)
* @param latitude latitude value: must be within standard +/-90 coordinate bounds.
* @return encoded value as a 32-bit {@code int}
* @throws IllegalArgumentException if latitude is out of bounds
*/
public static int encodeLatitude(double latitude) {
checkLatitude(latitude);
// the maximum possible value cannot be encoded without overflow
if (latitude == 90.0D) {
latitude = Math.nextDown(latitude);
}
return (int) Math.floor(latitude / LAT_DECODE);
}代码示例来源：origin: org.apache.lucene/lucene-core
/**
* Quantizes double (64 bit) longitude into 32 bits (rounding down: in the direction of -180)
* @param longitude longitude value: must be within standard +/-180 coordinate bounds.
* @return encoded value as a 32-bit {@code int}
* @throws IllegalArgumentException if longitude is out of bounds
*/
public static int encodeLongitude(double longitude) {
checkLongitude(longitude);
// the maximum possible value cannot be encoded without overflow
if (longitude == 180.0D) {
longitude = Math.nextDown(longitude);
}
return (int) Math.floor(longitude / LON_DECODE);
}代码示例来源：origin: org.apache.lucene/lucene-core
/**
* Quantizes double (64 bit) longitude into 32 bits (rounding up: in the direction of +180)
* @param longitude longitude value: must be within standard +/-180 coordinate bounds.
* @return encoded value as a 32-bit {@code int}
* @throws IllegalArgumentException if longitude is out of bounds
*/
public static int encodeLongitudeCeil(double longitude) {
GeoUtils.checkLongitude(longitude);
// the maximum possible value cannot be encoded without overflow
if (longitude == 180.0D) {
longitude = Math.nextDown(longitude);
}
return (int) Math.ceil(longitude / LON_DECODE);
}代码示例来源：origin: org.apache.lucene/lucene-core
/**
* Quantizes double (64 bit) latitude into 32 bits (rounding up: in the direction of +90)
* @param latitude latitude value: must be within standard +/-90 coordinate bounds.
* @return encoded value as a 32-bit {@code int}
* @throws IllegalArgumentException if latitude is out of bounds
*/
public static int encodeLatitudeCeil(double latitude) {
GeoUtils.checkLatitude(latitude);
// the maximum possible value cannot be encoded without overflow
if (latitude == 90.0D) {
latitude = Math.nextDown(latitude);
}
return (int) Math.ceil(latitude / LAT_DECODE);
}代码示例来源：origin: vavr-io/vavr
@GwtIncompatible("Math::nextUp is not implemented")
static BigDecimal asDecimal(double number) {
if (number == NEGATIVE_INFINITY) {
final BigDecimal result = BigDecimal.valueOf(Math.nextUp(NEGATIVE_INFINITY));
return result.subtract(INFINITY_DISTANCE.get());
} else if (number == POSITIVE_INFINITY) {
final BigDecimal result = BigDecimal.valueOf(Math.nextDown(POSITIVE_INFINITY));
return result.add(INFINITY_DISTANCE.get());
} else {
return BigDecimal.valueOf(number);
}
}
}代码示例来源：origin: prestodb/presto
@ScalarOperator(SATURATED_FLOOR_CAST)
@SqlType(StandardTypes.REAL)
public static strictfp long saturatedFloorCastToFloat(@SqlType(StandardTypes.DOUBLE) double value)
{
float result;
float minFloat = -1.0f * Float.MAX_VALUE;
if (value <= minFloat) {
result = minFloat;
}
else if (value >= Float.MAX_VALUE) {
result = Float.MAX_VALUE;
}
else {
result = (float) value;
if (result > value) {
result = Math.nextDown(result);
}
checkState(result <= value);
}
return floatToRawIntBits(result);
}代码示例来源：origin: vavr-io/vavr
@GwtIncompatible
static Iterator<Double> rangeClosedBy(double from, double toInclusive, double step) {
if (from == toInclusive) {
return of(from);
}
final double toExclusive = (step > 0) ? Math.nextUp(toInclusive) : Math.nextDown(toInclusive);
return rangeBy(from, toExclusive, step);
}代码示例来源：origin: prestodb/presto
@Test
public void testCastToBigint()
{
assertFunction("cast(37.7E0 as bigint)", BIGINT, 38L);
assertFunction("cast(-37.7E0 as bigint)", BIGINT, -38L);
assertFunction("cast(17.1E0 as bigint)", BIGINT, 17L);
assertFunction("cast(-17.1E0 as bigint)", BIGINT, -17L);
assertFunction("cast(9.2E18 as bigint)", BIGINT, 9200000000000000000L);
assertFunction("cast(-9.2E18 as bigint)", BIGINT, -9200000000000000000L);
assertFunction("cast(2.21E9 as bigint)", BIGINT, 2210000000L);
assertFunction("cast(-2.21E9 as bigint)", BIGINT, -2210000000L);
assertFunction("cast(17.5E0 as bigint)", BIGINT, 18L);
assertFunction("cast(-17.5E0 as bigint)", BIGINT, -18L);
assertFunction("cast(" + Math.nextDown(0x1.0p63) + " as bigint)", BIGINT, (long) Math.nextDown(0x1.0p63));
assertInvalidFunction("cast(" + 0x1.0p63 + " as bigint)", INVALID_CAST_ARGUMENT);
assertInvalidFunction("cast(" + Math.nextUp(0x1.0p63) + " as bigint)", INVALID_CAST_ARGUMENT);
assertInvalidFunction("cast(" + Math.nextDown(-0x1.0p63) + " as bigint)", INVALID_CAST_ARGUMENT);
assertFunction("cast(" + -0x1.0p63 + " as bigint)", BIGINT, (long) -0x1.0p63);
assertFunction("cast(" + Math.nextUp(-0x1.0p63) + " as bigint)", BIGINT, (long) Math.nextUp(-0x1.0p63));
assertInvalidFunction("cast(9.3E18 as bigint)", INVALID_CAST_ARGUMENT);
assertInvalidFunction("cast(-9.3E18 as bigint)", INVALID_CAST_ARGUMENT);
assertInvalidFunction("cast(infinity() as bigint)", INVALID_CAST_ARGUMENT);
assertInvalidFunction("cast(-infinity() as bigint)", INVALID_CAST_ARGUMENT);
assertInvalidFunction("cast(nan() as bigint)", INVALID_CAST_ARGUMENT);
}代码示例来源：origin: org.elasticsearch/elasticsearch
@Override
public Query containsQuery(String field, Object from, Object to, boolean includeFrom, boolean includeTo) {
return DoubleRange.newContainsQuery(field,
new double[] {includeFrom ? (Double)from : Math.nextUp((Double)from)},
new double[] {includeTo ? (Double)to : Math.nextDown((Double)to)});
}
@Override代码示例来源：origin: org.elasticsearch/elasticsearch
@Override
public Query containsQuery(String field, Object from, Object to, boolean includeFrom, boolean includeTo) {
return FloatRange.newContainsQuery(field,
new float[] {includeFrom ? (Float)from : Math.nextUp((Float)from)},
new float[] {includeTo ? (Float)to : Math.nextDown((Float)to)});
}
@Override代码示例来源：origin: org.elasticsearch/elasticsearch
@Override
public Query withinQuery(String field, Object from, Object to, boolean includeFrom, boolean includeTo) {
return DoubleRange.newWithinQuery(field,
new double[] {includeFrom ? (Double)from : Math.nextUp((Double)from)},
new double[] {includeTo ? (Double)to : Math.nextDown((Double)to)});
}
@Override代码示例来源：origin: org.elasticsearch/elasticsearch
@Override
public Query intersectsQuery(String field, Object from, Object to, boolean includeFrom, boolean includeTo) {
return DoubleRange.newIntersectsQuery(field,
new double[] {includeFrom ? (Double)from : Math.nextUp((Double)from)},
new double[] {includeTo ? (Double)to : Math.nextDown((Double)to)});
}
},代码示例来源：origin: org.elasticsearch/elasticsearch
@Override
public Query withinQuery(String field, Object from, Object to, boolean includeFrom, boolean includeTo) {
return FloatRange.newWithinQuery(field,
new float[] {includeFrom ? (Float)from : Math.nextUp((Float)from)},
new float[] {includeTo ? (Float)to : Math.nextDown((Float)to)});
}
@Override代码示例来源：origin: org.elasticsearch/elasticsearch
@Override
public Query intersectsQuery(String field, Object from, Object to, boolean includeFrom, boolean includeTo) {
return FloatRange.newIntersectsQuery(field,
new float[] {includeFrom ? (Float)from : Math.nextUp((Float)from)},
new float[] {includeTo ? (Float)to : Math.nextDown((Float)to)});
}
},代码示例来源：origin: rnewson/couchdb-lucene
@Override
public Query toRangeQuery(final String name, final String lower, final String upper,
final boolean lowerInclusive, final boolean upperInclusive) {
return DoublePoint.newRangeQuery(name,
lowerInclusive ? toDouble(lower) : Math.nextUp(toDouble(lower)),
upperInclusive ? toDouble(upper) : Math.nextDown(toDouble(upper)));
}代码示例来源：origin: rnewson/couchdb-lucene
@Override
public Query toRangeQuery(final String name, final String lower, final String upper,
final boolean lowerInclusive, final boolean upperInclusive) {
return FloatPoint.newRangeQuery(name,
lowerInclusive ? toFloat(lower) : Math.nextUp(toFloat(lower)),
upperInclusive ? toFloat(upper) : Math.nextDown(toFloat(upper)));
}内容来源于网络，如有侵权，请联系作者删除！
