{
        procedure and functions in this library

  Sign         returns sign (-1,0,+1) of integer value
  Min          returns minimum of two integers
  Max          returns maximum of two integers
  ISwap        trade two integer values
  ISqrt        returns integer square root of integer value
  Condition    forces integer into the range Min..Max
  AMin         returns minimum integer in array
  AMax         returns maximum integer in array

}

function Sign(Val : Integer) : Integer;
{
       purpose       returns sign (-1,0,1) of Val
       last update   23 Jun 85
}
begin
  if Val > 0
    then Sign := 1
  else if Val < 0
    then Sign := -1
    else Sign :=  0
end; { of func Sign }

function Min(Val1,Val2 : Integer) : Integer;
{
       purpose       returns minimum of two integers
       last update   08 Jul 85
}
begin
  if Val1 < Val2
    then Min := Val1
    else Min := Val2
end; { of func Min }

function Max(Val1,Val2 : Integer) : Integer;
{
       purpose       returns maximum of two integers
       last update   08 Jul 85
}
begin
  if Val1 > Val2
    then Max := Val1
    else Max := Val2
end; { of func Max }

procedure ISwap(var Val1,Val2 : Integer);
{
       purpose       swaps values of Val1 and Val2
       last update   08 Jul 85
}
var
  Temp               : Integer;
begin
  Temp := Val1;
  Val1 := Val2;
  Val2 := Temp
end; { of proc ISwap }

function ISqrt(Val : Integer) : Integer;
{
       purpose       returns integer square root of Val
       note well:    this routine rounds to the nearest
                     square root
       last update   23 Jan 85
}
var
  OddSeq,Square,Ro