m3tk-misc/src/M3Time.m3

MODULE M3Time;
************************************************************************* Copyright (C) Olivetti 1989 All Rights reserved Use and copy of this software and preparation of derivative works based upon this software are permitted to any person, provided this same copyright notice and the following Olivetti warranty disclaimer are included in any copy of the software or any modification thereof or derivative work therefrom made by any person. This software is made available AS IS and Olivetti disclaims all warranties with respect to this software, whether expressed or implied under any law, including all implied warranties of merchantibility and fitness for any purpose. In no event shall Olivetti be liable for any damages whatsoever resulting from loss of use, data or profits or otherwise arising out of or in connection with the use or performance of this software. ************************************************************************* 

IMPORT Fmt, Time;

REVEAL
  T = BRANDED REF RECORD t: LONGREAL END;

PROCEDURE Now(): T RAISES {} =
  BEGIN
    RETURN NEW(T, t := Time.Now());
  END Now;

PROCEDURE Interval(t: T): T RAISES {} =
  VAR nt: T := Now();
  BEGIN
    nt.t := nt.t -  t.t;
    RETURN nt;
  END Interval;

PROCEDURE Add(t1, t2: T): T RAISES {} =
  BEGIN
    RETURN NEW(T, t := t1.t + t2.t);
  END Add;

PROCEDURE AsString(t: T): TEXT RAISES {} =
  BEGIN
    RETURN Fmt.LongReal(t.t, Fmt.Style.Fix, prec := 2);
  END AsString;

PROCEDURE Zero(): T RAISES {} =
  BEGIN
    RETURN NEW(T, t := 0.0d0);
  END Zero;

BEGIN
END M3Time.