Package io.deephaven.util.compare
Class LongComparisons
java.lang.Object
io.deephaven.util.compare.LongComparisons
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionstatic int
compare
(long lhs, long rhs) Compares two longs according to the following rules:QueryConstants.NULL_LONG
is less than all otherlong
values Otherwise, normallong
comparison logic is usedstatic boolean
eq
(long lhs, long rhs) Compare two longs for equality consistent withcompare(long, long)
; that iscompare(lhs, rhs) == 0 ⇒ eq(lhs, rhs)
andcompare(lhs, rhs) != 0 ⇒ !eq(lhs, rhs)
.static boolean
geq
(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) >= 0
.static boolean
gt
(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) > 0
.static int
hashCode
(long x) Returns a hash code for along
value consistent witheq(long, long)
; that is,eq(x, y) ⇒ hashCode(x) == hashCode(y)
.static boolean
leq
(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) <= 0
.static boolean
lt
(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) < 0
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Constructor Details
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LongComparisons
public LongComparisons()
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Method Details
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compare
public static int compare(long lhs, long rhs) Compares two longs according to the following rules:QueryConstants.NULL_LONG
is less than all otherlong
values- Otherwise, normal
long
comparison logic is used
- Parameters:
lhs
- the first valuerhs
- the second value- Returns:
- the value
0
iflhs
is equal torhs
; a value less than0
iflhs
is less thanrhs
; and a value greater than0
iflhs
is greater thanrhs
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eq
public static boolean eq(long lhs, long rhs) Compare two longs for equality consistent withcompare(long, long)
; that iscompare(lhs, rhs) == 0 ⇒ eq(lhs, rhs)
andcompare(lhs, rhs) != 0 ⇒ !eq(lhs, rhs)
.Logically equivalent to
compare(lhs, rhs) == 0
.- Parameters:
lhs
- the first valuerhs
- the second value- Returns:
true
if the values are equal,false
otherwise
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hashCode
public static int hashCode(long x) Returns a hash code for along
value consistent witheq(long, long)
; that is,eq(x, y) ⇒ hashCode(x) == hashCode(y)
.- Parameters:
x
- the value to hash- Returns:
- a hash code value for a
long
value
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gt
public static boolean gt(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) > 0
.- Parameters:
lhs
- the first valuerhs
- the second value- Returns:
true
ifflhs
is greater thanrhs
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lt
public static boolean lt(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) < 0
.- Parameters:
lhs
- the first valuerhs
- the second value- Returns:
true
ifflhs
is less thanrhs
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geq
public static boolean geq(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) >= 0
.- Parameters:
lhs
- the first valuerhs
- the second value- Returns:
true
ifflhs
is greater than or equal torhs
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leq
public static boolean leq(long lhs, long rhs) Logically equivalent tocompare(lhs, rhs) <= 0
.- Parameters:
lhs
- the first valuerhs
- the second value- Returns:
true
ifflhs
is less than or equal torhs
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