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Java Source Code / Java Documentation » Science » jscience 4.3.1 » org.jscience.mathematics.number 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.jscience.mathematics.number.Calculus

Calculus
final class Calculus (Code)

This class holds utilities upon arrays of positive long.


author:
   Jean-Marie Dautelle
version:
   3.3, January 14, 2006

Inner Class :final static class MultiplyLogic implements Runnable

Field Summary
final static  longMASK_31
    
final static  longMASK_32
    
final static  longMASK_63
    
final static  longMASK_8
    


Method Summary
static  intadd(long[] x, int xSize, long y)
    
static  intadd(long[] x, int xSize, long[] y, int ySize, long[] z)
    
static  intcompare(long[] x, long[] y, int size)
    
static  longdivide(long[] x, int xSize, int y, long[] z)
     z = x / y Preconditions: y is positive (31 bits).
static  intmultiply(long[] x, int xSize, long y, long[] z)
    
static  intmultiply(long[] x, int xSize, long[] y, int ySize, long[] z)
    
static  intshiftLeft(int wordShift, int bitShift, long[] x, int xSize, long[] z)
    
static  intshiftRight(int wordShift, int bitShift, long[] x, int xSize, long[] z)
    
static  intsubtract(long[] x, int xSize, long[] y, int ySize, long[] z)
    

Field Detail
MASK_31
final static long MASK_31(Code)



MASK_32
final static long MASK_32(Code)



MASK_63
final static long MASK_63(Code)



MASK_8
final static long MASK_8(Code)





Method Detail
add
static int add(long[] x, int xSize, long y)(Code)
x += y x size



add
static int add(long[] x, int xSize, long[] y, int ySize, long[] z)(Code)
z = x + y Preconditions: xSize >= ySize z size



compare
static int compare(long[] x, long[] y, int size)(Code)
x.compare(y) Preconditions: xSize = ySize = size 1, -1, 0



divide
static long divide(long[] x, int xSize, int y, long[] z)(Code)
z = x / y Preconditions: y is positive (31 bits). remainder



multiply
static int multiply(long[] x, int xSize, long y, long[] z)(Code)
z = x * y Preconditions: y != 0, x != 0 z size



multiply
static int multiply(long[] x, int xSize, long[] y, int ySize, long[] z)(Code)
z = x * y Preconditions: y != 0, xSize >= ySize z size



shiftLeft
static int shiftLeft(int wordShift, int bitShift, long[] x, int xSize, long[] z)(Code)
x << n Preconditions: xSize != 0 z size



shiftRight
static int shiftRight(int wordShift, int bitShift, long[] x, int xSize, long[] z)(Code)
x >> n Preconditions: xSize > wordShift z size



subtract
static int subtract(long[] x, int xSize, long[] y, int ySize, long[] z)(Code)
z = x - y Preconditions: x >= y z size



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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