Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / verif / env / fnx / vlib / FNXBasicUtilities / src / FNXArithUtil.vr

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// 
// OpenSPARC T2 Processor File: FNXArithUtil.vr
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#include "FNXArithUtilDefines.vri"

class FNXArithUtil {

  integer Power2Array[16];

  // Class constructor
  task new() {

    // Initialize the Power2Array. (to save time in doing the calculation)
    Power2Array[0] = 1;
    Power2Array[1] = 2;
    Power2Array[2] = 4;
    Power2Array[3] = 8;
    Power2Array[4] = 16;
    Power2Array[5] = 32;
    Power2Array[6] = 64;
    Power2Array[7] = 128;
    Power2Array[8] = 256;
    Power2Array[9] = 512;
    Power2Array[10] = 1024;
    Power2Array[11] = 2048;
    Power2Array[12] = 4096;
    Power2Array[13] = 8192;
    Power2Array[14] = 16384;
    Power2Array[15] = 32768;
  }

  // Calculates 2 ^ Y. Max value of Y is 'd16
  function integer Power2(integer Y);
  // Returns the min of X and Y
  function integer Min(integer X, integer Y);
}

// Power2
function integer FNXArithUtil::Power2(integer Y) {
  Power2 = Power2Array[Y];
}

// Min
function integer FNXArithUtil::Min(integer X, integer Y) {
  if(X < Y) {
    Min = X;
  }
  else {
    Min = Y;
  }    
}