Dataflow Operator

download Dataflow Operator

of 14

  • date post

    03-Jun-2018
  • Category

    Documents

  • view

    217
  • download

    0

Embed Size (px)

Transcript of Dataflow Operator

  • 8/12/2019 Dataflow Operator

    1/14

    EXPRESSIONS, OPERANDSAND

    OPERATORS

  • 8/12/2019 Dataflow Operator

    2/14

    EXPRESSIONS

  • 8/12/2019 Dataflow Operator

    3/14

    OPERANDS

  • 8/12/2019 Dataflow Operator

    4/14

    OPERATORS

    Perform an operation on operands

    d1 && d2 // && operates onoperands d1 and d2

    !a[0]

    B1>>1

  • 8/12/2019 Dataflow Operator

    5/14

    OPERATORTYPESANDSYMBOLS

    Operator Type Operator Symbol Operation Performed Number of OperandsArithmetic *

    /

    +

    -

    %

    **

    multiply

    divide

    add

    subtract

    modulus

    power (exponent)

    two

    two

    two

    two

    two

    twoLogical !

    &&

    ||

    logical negation

    logical and

    logical or

    one

    two

    two

    Relational >

    =

  • 8/12/2019 Dataflow Operator

    6/14

    Operator Type Operator Symbol Operation Performed Number of Operands

    Bitwise ~

    &

    |

    ^^~ or ~^

    bitwise negation

    bitwise and

    bitwise or

    bitwise xorbitwise xnor

    one

    two

    two

    twotwo

    Reduction &

    ~&

    |

    ~|^

    ^~ or ~^

    reduction and

    reduction nand

    reduction or

    reduction norreduction xor

    reduction xnor

    one

    one

    one

    oneone

    one

    Shift >>

    >>

  • 8/12/2019 Dataflow Operator

    7/14

    LOGICALOPERATORS

  • 8/12/2019 Dataflow Operator

    8/14

    EQUALITYOPERATORS

    // A = 4, B = 3

    // X = 4'b1010, Y = 4'b1101

    // Z = 4'b1xxz, M = 4'b1xxz, N = 4'b1xxx

    A == B // Results in logical 0

    X != Y // Results in logical 1

    X == Z // Results in x

    Z === M // Results in logical 1 (all bits match, including x and z)

    Z === N // Results in logical 0 (least significant bit does not match)

    M !== N // Results in logical 1

  • 8/12/2019 Dataflow Operator

    9/14

    BITWISEOPERATORS

    Bitwise operators are negation (~), and(&), or (|),

    xor (^), xnor (^~, ~^).

  • 8/12/2019 Dataflow Operator

    10/14

    REDUCTIONOPERATORS

    Reduction operators are and (&), nand (~&), or (|),

    nor (~|), xor (^), and xnor (~^, ^~).

    perform a bitwise operation on a single vector

    operand and yield a 1-bit result.

  • 8/12/2019 Dataflow Operator

    11/14

    SHIFTOPERATORS

    Shift operators are right shift ( >>), left shift (>), and arithmetic left shift

    (

  • 8/12/2019 Dataflow Operator

    12/14

    CONCATENATIONOPERATOR

  • 8/12/2019 Dataflow Operator

    13/14

    REPLICATIONOPERATOR

  • 8/12/2019 Dataflow Operator

    14/14

    OPERATORPRECEDENCE

    Operators Operator Symbols Precedence

    Unary + - ! ~ Highest precedence

    Multiply, Divide,

    Modulus

    * / %

    Add, Subtract + -

    Shift >

    Relational < >=

    Equality == != === !==

    Reduction &, ~&

    ^ ^~

    |, ~|Logical &&

    ||

    Conditional ?: Lowest precedence