Ada Programming/Libraries/Ada.Calendar.Arithmetic

Ada.Calendar.Arithmetic __TOC__ Ada Calendar Arithmetic is a unit of the Predefined Language Environment since Ada 2005. Specification Standard Ada library specification Copyright (c) 2003-2018 Maxim Reznik <reznikmm@gmail.com> Copyright (c) 2004-2016 AXE Consultants Copyright (c) 2004, 2005, 2006 Ada-Europe Copyright (c) 2000 The MITRE Corporation, Inc. Copyright (c) 1992, 1993, 1994, 1995 Intermetrics, Inc. SPDX-License-Identifier: BSD-3-Clause and LicenseRef-AdaReferenceManual ------------------------------------------------------------------------- package Ada Calendar Arithmetic is Arithmetic on days: type Day_Count is range -366 * (1 + Year_Number'Last - Year_Number'First) double_dot .. 366 * (1 + Year_Number'Last - Year_Number'First); subtype Leap_Seconds_Count is Integer range -2047 double_dot .. 2047; procedure Difference (Left : in Time; Right : in Time; Days : out Day_Count; Seconds : out Duration; Leap_Seconds : out Leap_Seconds_Count); function "+" (Left : in Time; Right : in Day_Count) return Time; function "+" (Left : in Day_Count; Right : in Time) return Time; function "-" (Left : in Time; Right : in Day_Count) return Time; function "-" (Left : in Time; Right : in Time) return Day_Count; end Adadot .Calendardot .Arithmetic; See also Wikibook Ada Programming/Libraries/Ada Ada Reference Manual Ada 2005 9 6 1 Formatting, Time Zones, and other operations for Time Ada 2012 9 6 1 Formatting, Time Zones, and other operations for Time Open-Source Implementations a-calari.ads a-calari.adb calendar/a-calari.ads calendar/a-calari.adb