Go backward to Vector Operations Go up to Top Go forward to Scalar Loop

Vector Operations

• Gather/scatter

  $V$₁,V₂ <-GATHER(A)
  load all non-zero elements of $A$ into $V$₁ and their indices into $V$<sub>2
  
  1</sub>,V₂)
  store elements of $V$₁ into $A$ at indices denoted by $V$₂ and fill rest with zeros

• Mask

  $V$₁ <-MASK(V₂,V₃)
  store elements of $V$₂ into $V$₁ for which corresponding position in $V$₃ is non-zero