Class XSum.SmallAccumulator

java.lang.Object

com.oracle.truffle.js.runtime.external.XSum.SmallAccumulator

Enclosing class:

XSum

public static class XSum.SmallAccumulator
extends Object

Constructor Summary

Constructors

Constructor	Description
SmallAccumulator()

Method Summary

Modifier and Type	Method	Description
void	add(double value)	Add one double to a small accumulator.
void	addArray(double[] vec)	Add an array of floating-point numbers to a small accumulator.
double	round()	Return the result of rounding a small accumulator.

Methods inherited from class java.lang.Object

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

Constructor Details

SmallAccumulator

public SmallAccumulator()

Method Details

addArray

public void addArray(double[] vec)

Add an array of floating-point numbers to a small accumulator. Mixes calls of carryPropagate with calls of add1NoCarry.

add

public void add(double value)

Add one double to a small accumulator. This is equivalent to, but somewhat faster than, calling addArray() with a vector of one value.

round

public double round()

Return the result of rounding a small accumulator. The rounding mode is to nearest, with ties to even. The small accumulator may be modified by this operation (by carry propagation being done), but the value it represents should not change.