My instances are 31-bit numbers, stored in twos complement form. The allowable range is approximately +- 1 billion (see SmallInteger minVal, maxVal).

	bit manipulation
	bitAnd: bitOr: bitShift: bitXor: hashMultiply highBit highBitOfMagnitude lowBit

	comparing
	< <= = > >= hash identityHash identityHashMappedBy: ~=

	converting
	asFloat

	copying
	clone deepCopy shallowCopy veryDeepCopyWith:

	printing
	destinationBuffer: printOn:base: threeDigitName uniqueNameForReference

	private
	fromString:radix: highBitOfPositiveReceiver

	system primitives
	asOop digitAt: digitAt:put: digitLength instVarAt: nextInstance

	testing
	even odd

	documentation
	guideToDivision

	examples
	exampleFor:

	instance creation
	basicNew new

	plugin generation
	ccg:generateCoerceToOopFrom:on: ccg:generateCoerceToValueFrom:on: ccg:prolog:expr:index: ccgCanConvertFrom:

	arithmetic	top
	* Primitive. Multiply the receiver by the argument and answer with the result if it is a SmallInteger. Fail if the argument or the result is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.
	+ Primitive. Add the receiver to the argument and answer with the result if it is a SmallInteger. Fail if the argument or the result is not a SmallInteger Essential No Lookup. See Object documentation whatIsAPrimitive.
	- Primitive. Subtract the argument from the receiver and answer with the result if it is a SmallInteger. Fail if the argument or the result is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.
	/ Primitive. This primitive (for /) divides the receiver by the argument and returns the result if the division is exact. Fail if the result is not a whole integer. Fail if the argument is 0 or is not a SmallInteger. Optional. No Lookup. See Object documentation whatIsAPrimitive.
	// Primitive. Divide the receiver by the argument and answer with the result. Round the result down towards negative infinity to make it a whole integer. Fail if the argument is 0 or is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.
	\\ Primitive. Take the receiver modulo the argument. The result is the remainder rounded towards negative infinity, of the receiver divided by the argument Fail if the argument is 0 or is not a SmallInteger. Optional. No Lookup. See Object documentation whatIsAPrimitive.
	gcd: See SmallInteger (Integer) | gcd:
	quo: Primitive. Divide the receiver by the argument and answer with the result. Round the result down towards zero to make it a whole integer. Fail if the argument is 0 or is not a SmallInteger. Optional. See Object documentation whatIsAPrimitive.

	bit manipulation	top
	bitAnd: Primitive. Answer an Integer whose bits are the logical OR of the receiver's bits and those of the argument, arg. Numbers are interpreted as having 2's-complement representation. Essential. See Object documentation whatIsAPrimitive.
	bitOr: Primitive. Answer an Integer whose bits are the logical OR of the receiver's bits and those of the argument, arg. Numbers are interpreted as having 2's-complement representation. Essential. See Object documentation whatIsAPrimitive.
	bitShift: Primitive. Answer an Integer whose value is the receiver's value shifted left by the number of bits indicated by the argument. Negative arguments shift right. The receiver is interpreted as having 2's-complement representation. Essential. See Object documentation whatIsAPrimitive.
	bitXor: Primitive. Answer an Integer whose bits are the logical XOR of the receiver's bits and those of the argument, arg. Numbers are interpreted as having 2's-complement representation. Essential. See Object documentation whatIsAPrimitive.
	hashMultiply
	highBit Answer the index of the high order bit of the receiver, or zero if the receiver is zero. Raise an error if the receiver is negative, since negative integers are defined to have an infinite number of leading 1's in 2's-complement arithmetic. Use >>highBitOfMagnitude if you want to get the highest bit of the magnitude.
	highBitOfMagnitude Answer the index of the high order bit of the receiver, or zero if the receiver is zero. This method is used for negative SmallIntegers as well, since Squeak's LargeIntegers are sign/magnitude.
	lowBit Answer the index of the low order one bit. 2r00101000 lowBit (Answers: 4) 2r-00101000 lowBit (Answers: 4) First we skip bits in groups of 4, then single bits. While not optimal, this is a good tradeoff; long integer #lowBit always invokes us with bytes.

	comparing	top
	< Primitive. Compare the receiver with the argument and answer with true if the receiver is less than the argument. Otherwise answer false. Fail if the argument is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.
	<= Primitive. Compare the receiver with the argument and answer true if the receiver is less than or equal to the argument. Otherwise answer false. Fail if the argument is not a SmallInteger. Optional. No Lookup. See Object documentation whatIsAPrimitive.
	= Primitive. Compare the receiver with the argument and answer true if the receiver is equal to the argument. Otherwise answer false. Fail if the argument is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.
	> Primitive. Compare the receiver with the argument and answer true if the receiver is greater than the argument. Otherwise answer false. Fail if the argument is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.
	>= Primitive. Compare the receiver with the argument and answer true if the receiver is greater than or equal to the argument. Otherwise answer false. Fail if the argument is not a SmallInteger. Optional. No Lookup. See Object documentation whatIsAPrimitive.
	hash Hash is reimplemented because = is implemented.
	identityHash Answer a SmallInteger whose value is related to the receiver's identity. This method must not be overridden, except by SmallInteger. Primitive. Fails if the receiver is a SmallInteger. Essential. See Object documentation whatIsAPrimitive. Do not override.
	identityHashMappedBy: Answer what my hash would be if oops changed according to map.
	~= Primitive. Compare the receiver with the argument and answer true if the receiver is not equal to the argument. Otherwise answer false. Fail if the argument is not a SmallInteger. Essential. No Lookup. See Object documentation whatIsAPrimitive.

	converting	top
	asFloat Primitive. Answer a Float that represents the value of the receiver. Essential. See Object documentation whatIsAPrimitive.

	copying	top
	clone
	deepCopy Answer a copy of the receiver with its own copy of each instance variable.
	shallowCopy Answer a copy of the receiver which shares the receiver's instance variables.
	veryDeepCopyWith: Return self. I can't be copied. Do not record me.

	printing	top
	destinationBuffer:
	printOn:base: Refer to the comment in Integer|printOn:base:.
	threeDigitName
	uniqueNameForReference Answer a nice name by which the receiver can be referred to by other objects. For SmallIntegers, we can actually just use the receiver's own printString, though this is pretty strange in some ways.

	private	top
	fromString:radix:
	highBitOfPositiveReceiver Answer the index of the high order bit of the receiver, or zero if the receiver is zero. Receiver has to be positive!

	system primitives	top
	asOop Answer an object pointer as an integer, return negative number for SmallInteger
	digitAt: Answer the value of an indexable field in the receiver. LargePositiveInteger uses bytes of base two number, and each is a 'digit' base 256. Fail if the argument (the index) is not an Integer or is out of bounds.
	digitAt:put: Fails. The digits of a small integer can not be modified.
	digitLength Answer the number of indexable fields in the receiver. This value is the same as the largest legal subscript. Included so that a SmallInteger can behave like a LargePositiveInteger or LargeNegativeInteger.
	instVarAt: Small integer has to be specially handled.
	nextInstance SmallIntegers can't be enumerated this way. There are a finite number of them from from (SmallInteger minVal) to (SmallInteger maxVal), but you'll have to enumerate them yourself with: (SmallInteger minVal) to: (SmallInteger maxVal) do: [:integer | <your code here>].

	testing	top
	even Refer to the comment in Number|even.
	odd Answer whether the receiver is an odd number.

	constants	top
	maxVal Answer the maximum value for a SmallInteger.
	minVal Answer the minimum value for a SmallInteger.

	documentation	top
	guideToDivision Handy guide to the kinds of Integer division: / exact division, returns a fraction if result is not a whole integer. // returns an Integer, rounded towards negative infinity. \\ is modulo rounded towards negative infinity. quo: truncated division, rounded towards zero.

	examples	top
	exampleFor: Provide a MethodCall with a valid example of aSelector, ready to run. If 'all', provide all tests we know about for SUnit tests. When 'all', each will be a Verifier, with an expected answer. Returns a list of MethodCalls, Verifiers, or VerifierOfPropertys.

	instance creation	top
	basicNew Primitive. Answer an instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable. Essential. See Object documentation whatIsAPrimitive.
	new Answer a new instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable.

	plugin generation	top
	ccg:generateCoerceToOopFrom:on:
	ccg:generateCoerceToValueFrom:on:
	ccg:prolog:expr:index:
	ccgCanConvertFrom: