<* NEW INTRINSIC+ *>
DEFINITION MODULE RealMath;

  (* Mathematical functions for the type REAL *)

CONST
  pi   = 3.141592;
  exp1 = 2.718281;

PROCEDURE sqrt (x: REAL): REAL;
  (* Returns the positive square root of x *)

PROCEDURE exp (x: REAL): REAL;
  (* Returns the exponential of x *)

PROCEDURE ln (x: REAL): REAL;
  (* Returns the natural logarithm of x *)

  (* The angle in all trigonometric functions is measured in radians *)

PROCEDURE sin (x: REAL): REAL;
  (* Returns the sine of x *)

PROCEDURE cos (x: REAL): REAL;
  (* Returns the cosine of x *)

PROCEDURE tan (x: REAL): REAL;
  (* Returns the tangent of x *)

PROCEDURE arcsin (x: REAL): REAL;
  (* Returns the arcsine of x *)

PROCEDURE arccos (x: REAL): REAL;
  (* Returns the arccosine of x *)

PROCEDURE arctan (x: REAL): REAL;
  (* Returns the arctangent of x *)

PROCEDURE power (base, exponent: REAL): REAL;
  (* Returns the value of the number base raised to the power exponent *)

PROCEDURE round (x: REAL): INTEGER;
  (* Returns the value of x rounded to the nearest integer *)

PROCEDURE IsRMathException (): BOOLEAN;
  (* Returns TRUE if the current coroutine is in the exceptional execution state
     because of the raising of an exception in a routine from this module; otherwise
     returns FALSE.
  *)

END RealMath.

