org.apache.hadoop.hive.ql.exec.vector.expressions

Class MathExpr

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.expressions.MathExpr

public class MathExpr
extends Object

Math expression evaluation helper functions. Some of these are referenced from ColumnUnaryFunc.txt.

Constructor Summary

Constructors

Constructor and Description
MathExpr()

Method Summary

Methods

Modifier and Type	Method and Description
static long	abs(long v)
static long	doubleToTimestamp(double v)
static long	fromTimestamp(long v)
static double	fromTimestampToDouble(long v)
static double	log2(double d)
static long	longToTimestamp(long v)
static long	millisecondsLongToTimestamp(long v)
static void	NaNToNull(DoubleColumnVector v, int[] sel, boolean selectedInUse, int n)
static void	NaNToNull(DoubleColumnVector v, int[] sel, boolean selectedInUse, int n, boolean convertInfinity)
static double	round(double d)
static double	sign(double v)
static double	sign(long v)
static long	toBool(double v)
static long	toBool(long v)
static int	writeLongToUTF8(byte[] result, long i)

Methods inherited from class java.lang.Object

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

Constructor Detail

MathExpr

public MathExpr()

Method Detail

round

public static double round(double d)

log2

public static double log2(double d)

abs

public static long abs(long v)

sign

public static double sign(double v)

sign

public static double sign(long v)

toBool

public static long toBool(long v)

toBool

public static long toBool(double v)

longToTimestamp

public static long longToTimestamp(long v)

millisecondsLongToTimestamp

public static long millisecondsLongToTimestamp(long v)

doubleToTimestamp

public static long doubleToTimestamp(double v)

fromTimestamp

public static long fromTimestamp(long v)

fromTimestampToDouble

public static double fromTimestampToDouble(long v)

writeLongToUTF8

public static int writeLongToUTF8(byte[] result,
                  long i)

NaNToNull

public static void NaNToNull(DoubleColumnVector v,
             int[] sel,
             boolean selectedInUse,
             int n)

NaNToNull

public static void NaNToNull(DoubleColumnVector v,
             int[] sel,
             boolean selectedInUse,
             int n,
             boolean convertInfinity)