com.oracle.truffle.api

Class ExactMath

java.lang.Object

com.oracle.truffle.api.ExactMath

public final class ExactMath
extends Object

This class contains exact math related methods that are generally useful for dynamic language implementations.

Since:

0.8 or earlier

Method Summary

Modifier and Type	Method and Description
static int	multiplyHigh(int x, int y)
static long	multiplyHigh(long x, long y)
static int	multiplyHighUnsigned(int x, int y)
static long	multiplyHighUnsigned(long x, long y)
static double	truncate(double x) Removes the decimal part (aka truncation or rounds towards zero) of the given double.
static float	truncate(float x) Removes the decimal part (aka truncation or rounds towards zero) of the given float.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

multiplyHigh

public static int multiplyHigh(int x,
                               int y)

Since:

0.8 or earlier

multiplyHighUnsigned

public static int multiplyHighUnsigned(int x,
                                       int y)

Since:

0.8 or earlier

multiplyHigh

public static long multiplyHigh(long x,
                                long y)

Since:

0.8 or earlier

multiplyHighUnsigned

public static long multiplyHighUnsigned(long x,
                                        long y)

Since:

0.8 or earlier

truncate

public static float truncate(float x)

Removes the decimal part (aka truncation or rounds towards zero) of the given float.

This corresponds to the IEEE 754 roundToIntegralTowardZero operation (IEEE Std 754-2008, section 5.9, page 41).

Since:

21.1

truncate

public static double truncate(double x)

Removes the decimal part (aka truncation or rounds towards zero) of the given double.

This corresponds to the IEEE 754 roundToIntegralTowardZero operation (IEEE Std 754-2008, section 5.9, page 41).

Since:

21.1