projects / thirdparty / gcc.git / blame
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1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUN-TIME COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- A D A . C A L E N D A R . A R I T H M E T I C -- | |
| 6 | -- -- | |
| 7 | -- B o d y -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 2006-2020, Free Software Foundation, Inc. -- |
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10 | -- -- |
| 11 | -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 | -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
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14 | -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| 15 | -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
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16 | -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| 17 | -- -- | |
| 18 | -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 | -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 | -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 | -- -- | |
| 22 | -- You should have received a copy of the GNU General Public License and -- | |
| 23 | -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 | -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 | -- <http://www.gnu.org/licenses/>. -- | |
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26 | -- -- |
| 27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
| 29 | -- -- | |
| 30 | ------------------------------------------------------------------------------ | |
| 31 | ||
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32 | package body Ada.Calendar.Arithmetic is |
| 33 | ||
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34 | -------------------------- |
| 35 | -- Implementation Notes -- | |
| 36 | -------------------------- | |
| 6e451134 | 37 | |
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38 | -- All operations in this package are target and time representation |
| 39 | -- independent, thus only one source file is needed for multiple targets. | |
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40 | |
| 41 | --------- | |
| 42 | -- "+" -- | |
| 43 | --------- | |
| 44 | ||
| 45 | function "+" (Left : Time; Right : Day_Count) return Time is | |
| 42907632 | 46 | R : constant Long_Integer := Long_Integer (Right); |
| 6e451134 | 47 | begin |
| 42907632 | 48 | return Arithmetic_Operations.Add (Left, R); |
| 6e451134 HK |
49 | end "+"; |
| 50 | ||
| 51 | function "+" (Left : Day_Count; Right : Time) return Time is | |
| 42907632 | 52 | L : constant Long_Integer := Long_Integer (Left); |
| 6e451134 | 53 | begin |
| 42907632 | 54 | return Arithmetic_Operations.Add (Right, L); |
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55 | end "+"; |
| 56 | ||
| 57 | --------- | |
| 58 | -- "-" -- | |
| 59 | --------- | |
| 60 | ||
| 61 | function "-" (Left : Time; Right : Day_Count) return Time is | |
| 42907632 | 62 | R : constant Long_Integer := Long_Integer (Right); |
| 6e451134 | 63 | begin |
| 42907632 | 64 | return Arithmetic_Operations.Subtract (Left, R); |
| 6e451134 HK |
65 | end "-"; |
| 66 | ||
| 67 | function "-" (Left, Right : Time) return Day_Count is | |
| 42907632 | 68 | Days : Long_Integer; |
| 6e451134 | 69 | Seconds : Duration; |
| 42907632 | 70 | Leap_Seconds : Integer; |
| 67ce0d7e RD |
71 | pragma Warnings (Off, Seconds); -- temporary ??? |
| 72 | pragma Warnings (Off, Leap_Seconds); -- temporary ??? | |
| 73 | pragma Unreferenced (Seconds, Leap_Seconds); | |
| 6e451134 | 74 | begin |
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75 | Arithmetic_Operations.Difference |
| 76 | (Left, Right, Days, Seconds, Leap_Seconds); | |
| 77 | return Day_Count (Days); | |
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78 | end "-"; |
| 79 | ||
| 80 | ---------------- | |
| 81 | -- Difference -- | |
| 82 | ---------------- | |
| 83 | ||
| 84 | procedure Difference | |
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85 | (Left : Time; |
| 86 | Right : Time; | |
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87 | Days : out Day_Count; |
| 88 | Seconds : out Duration; | |
| 89 | Leap_Seconds : out Leap_Seconds_Count) | |
| 90 | is | |
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91 | Op_Days : Long_Integer; |
| 92 | Op_Leaps : Integer; | |
| 6e451134 | 93 | begin |
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94 | Arithmetic_Operations.Difference |
| 95 | (Left, Right, Op_Days, Seconds, Op_Leaps); | |
| 96 | Days := Day_Count (Op_Days); | |
| 97 | Leap_Seconds := Leap_Seconds_Count (Op_Leaps); | |
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98 | end Difference; |
| 99 | ||
| 100 | end Ada.Calendar.Arithmetic; |