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

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, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- 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