IMPLEMENTATION MODULE LongMath;
IMPORT Math;

PROCEDURE sqrt (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.sqrt(x) END sqrt;
PROCEDURE exp (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.exp(x) END exp;
PROCEDURE ln (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.ln(x) END ln;
PROCEDURE sin (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.sin(x) END sin;
PROCEDURE cos (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.cos(x) END cos;
PROCEDURE tan (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.tan(x) END tan;
PROCEDURE arcsin (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.arcsin(x) END arcsin;
PROCEDURE arccos (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.arccos(x) END arccos;
PROCEDURE arctan (x : LONGREAL) : LONGREAL;
BEGIN RETURN Math.arctan(x) END arctan;
PROCEDURE power (base, exponent : LONGREAL) : LONGREAL;
BEGIN RETURN Math.power(base, exponent) END power;

PROCEDURE round (x : LONGREAL) : INTEGER;
(* nearest integer, halves away from zero *)
BEGIN
  IF x >= 0.0 THEN
    RETURN VAL(INTEGER, Math.floor(x + 0.5))
  ELSE
    RETURN VAL(INTEGER, Math.ceil(x - 0.5))
  END
END round;

PROCEDURE IsRMathException () : BOOLEAN;
BEGIN
  RETURN FALSE
END IsRMathException;

END LongMath.