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Bits

  

Iff

  

compute bit-wise iff of the inputs

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

Iff(num1, num2)

Iff(num1, num2, options)

Parameters

num1

-

an integer

num2

-

an integer

options

-

optional arguments

Description

• 

The Iff command computes the bit-wise logical if and only if of the inputs returning in terms of a number. All bits that are equal in both inputs will be set in the output.

• 

Iff takes one optional argument, bits=number that specifies the number of bits to be considered in the input. All bits past the specified number are truncated.

• 

Use with negative inputs requires that bits be set, either as an argument to Iff or globally via Settings. If both inputs are positive, no truncation need occur, so bits is computed as the largest most significant bit between the two inputs.

Examples

withBits:

num1Join1,1,0,0,0,1,0,1,0,1,1,0,1,1,1

num1:=30371

(1)

num2Join0,1,1,0,0,1,0,0,1,0,0,0,1,0,1

num2:=20774

(2)

The following number represents the Iff of num1,num2

num3Join0,1,0,1,1,1,1,0,0,0,0,1,1,0,1

num3:=22650

(3)

Compare:

num3,Iffnum1,num2

22650,22650

(4)

Negative inputs and outputs

Settingsdefaultbits=8,negativeout=true:

Iff1,12

12

(5)

Iff5,128

122

(6)

See Also

Bits

Join

Settings

 


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