org.jmlspecs.samples.prelimdesign
Class IntMathOps4

java.lang.Object
  org.jmlspecs.samples.prelimdesign.IntMathOps4

public class IntMathOps4

extends Object

Class Specifications

Specifications inherited from class Object

represents objectState <- org.jmlspecs.lang.JMLDataGroup.IT; public represents _getClass <- \typeof(this);

Model Field Summary

 

Model fields inherited from class java.lang.Object

_getClass, objectState, theString

 

Ghost Field Summary

 

Ghost fields inherited from class java.lang.Object

objectTimesFinalized, owner

 

Constructor Summary

IntMathOps4()

 

Model Method Summary

 

Model methods inherited from class java.lang.Object

hashValue

 

Method Summary
static int	isqrt(int y)           Integer square root function.

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

IntMathOps4

public IntMathOps4()

isqrt

public static int isqrt(int y)

Integer square root function.

Parameters:

y - the number to take the root of

Returns:

an integer approximating the positive square root of y

Specifications:

public normal_behavior
requires y >= 0;
assignable \nothing;
ensures 0 <= \result &&\result *\result <= y&&((0 <= (\result +1)*(\result +1)) ==> y < (\result +1)*(\result +1));