LWJGL 3.3.3 · org.lwjgl.system.MathUtil

Access	Constructor and Description
private	MathUtil()

Method Summary

Modifier and Type	Method and Description
public static long	Returns: the unsigned quotient of the first argument divided by the second argument mathDivideUnsigned(long the value to be divided dividend, long the value doing the dividing divisor) Returns the unsigned quotient of dividing the first argument by the second where each argument and the result is interpreted as an unsigned value.
public static boolean	mathHasZeroByte(int value)
public static boolean	mathHasZeroByte(long value)
public static boolean	mathHasZeroShort(int value)
public static boolean	mathHasZeroShort(long value)
public static boolean	Returns: true if the value if a power-of-two number. mathIsPoT(int the value to test value) Returns true if the specified integer `value` is a power-of-two number.
public static long	Returns: the result mathMultiplyHighS64(long the first value x, long the second value y) Returns as a `long` the most significant 64 bits of the 128-bit product of two `int64_t` factors.
public static long	Returns: the result mathMultiplyHighU64(long the first value x, long the second value y) Returns as a `long` the most significant 64 bits of the 128-bit product of two `uint64_t` factors.
public static long	Returns: the unsigned remainder of the first argument divided by the second argument mathRemainderUnsigned(long the value to be divided dividend, long the value doing the dividing divisor) Returns the unsigned remainder from dividing the first argument by the second where each argument and the result is interpreted as an unsigned value.
public static int	Returns: the power-of-two rounded value mathRoundPoT(int the value to round-up. Must be a number between `1` and `1 << 30`. value) Rounds the specified integer `value` up to the next power-of-two number.
private static long	udivdi3(long u, long v)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

MathUtil	back to summary
private MathUtil()

Method Detail

mathDivideUnsigned back to summary

mathDivideUnsigned	back to summary
public static long mathDivideUnsigned(long dividend, long divisor) Returns the unsigned quotient of dividing the first argument by the second where each argument and the result is interpreted as an unsigned value. When either argument is negative (i.e. a `uint64_t` value higher than `0x8000_0000_0000_0000L`), this method uses bit twiddling to implement the division. The JDK implementation uses `BigInteger` for this case, which has a negative impact on performance. Parameters dividend:long the value to be divided divisor:long the value doing the dividing Returns:long the unsigned quotient of the first argument divided by the second argument

public static long mathDivideUnsigned(long dividend, long divisor)

Returns the unsigned quotient of dividing the first argument by the second where each argument and the result is interpreted as an unsigned value.

When either argument is negative (i.e. a uint64_t value higher than 0x8000_0000_0000_0000L), this method uses bit twiddling to implement the division. The JDK implementation uses BigInteger for this case, which has a negative impact on performance.

Parameters

dividend:long: the value to be divided
divisor:long: the value doing the dividing

Returns:long

the unsigned quotient of the first argument divided by the second argument

mathHasZeroByte	back to summary
public static boolean mathHasZeroByte(int value)

mathHasZeroByte	back to summary
public static boolean mathHasZeroByte(long value)

mathHasZeroShort	back to summary
public static boolean mathHasZeroShort(int value)

mathHasZeroShort	back to summary
public static boolean mathHasZeroShort(long value)

mathIsPoT back to summary

mathIsPoT	back to summary
public static boolean mathIsPoT(int value) Returns true if the specified integer `value` is a power-of-two number. Parameters value:int the value to test Returns:boolean true if the value if a power-of-two number.

public static boolean mathIsPoT(int value)

Returns true if the specified integer value is a power-of-two number.

Parameters

value:int: the value to test

Returns:boolean

true if the value if a power-of-two number.

mathMultiplyHighS64 back to summary

mathMultiplyHighS64	back to summary
public static long mathMultiplyHighS64(long x, long y) Returns as a `long` the most significant 64 bits of the 128-bit product of two `int64_t` factors. Parameters x:long the first value y:long the second value Returns:long the result

public static long mathMultiplyHighS64(long x, long y)

Returns as a long the most significant 64 bits of the 128-bit product of two int64_t factors.

Parameters

x:long: the first value
y:long: the second value

Returns:long

the result

mathMultiplyHighU64 back to summary

mathMultiplyHighU64	back to summary
public static long mathMultiplyHighU64(long x, long y) Returns as a `long` the most significant 64 bits of the 128-bit product of two `uint64_t` factors. Parameters x:long the first value y:long the second value Returns:long the result

public static long mathMultiplyHighU64(long x, long y)

Returns as a long the most significant 64 bits of the 128-bit product of two uint64_t factors.

Parameters

x:long: the first value
y:long: the second value

Returns:long

the result

mathRemainderUnsigned back to summary

mathRemainderUnsigned	back to summary
public static long mathRemainderUnsigned(long dividend, long divisor) Returns the unsigned remainder from dividing the first argument by the second where each argument and the result is interpreted as an unsigned value. When either argument is negative (i.e. a `uint64_t` value higher than `0x8000_0000_0000_0000L`), this method uses bit twiddling to implement the remainder. The JDK implementation uses `BigInteger` for this case, which has a negative impact on performance. Parameters dividend:long the value to be divided divisor:long the value doing the dividing Returns:long the unsigned remainder of the first argument divided by the second argument

public static long mathRemainderUnsigned(long dividend, long divisor)

Returns the unsigned remainder from dividing the first argument by the second where each argument and the result is interpreted as an unsigned value.

When either argument is negative (i.e. a uint64_t value higher than 0x8000_0000_0000_0000L), this method uses bit twiddling to implement the remainder. The JDK implementation uses BigInteger for this case, which has a negative impact on performance.

Parameters

dividend:long: the value to be divided
divisor:long: the value doing the dividing

Returns:long

the unsigned remainder of the first argument divided by the second argument

mathRoundPoT back to summary

mathRoundPoT	back to summary
public static int mathRoundPoT(int value) Rounds the specified integer `value` up to the next power-of-two number. The returned value will be equal to `value` if it already is a power-of-two number. Parameters value:int the value to round-up. Must be a number between `1` and `1 << 30`. Returns:int the power-of-two rounded value

public static int mathRoundPoT(int value)

Rounds the specified integer value up to the next power-of-two number. The returned value will be equal to value if it already is a power-of-two number.

Parameters

value:int: the value to round-up. Must be a number between 1 and 1 << 30.

Returns:int

the power-of-two rounded value

udivdi3	back to summary
private static long udivdi3(long u, long v)

public final Class MathUtil

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Constructor Detail

Method Detail