| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . E X P _ L L L U -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2023, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This function performs exponentiation of unsigned types with binary modulus |
| -- values exceeding that of System.Unsigned_Types.Long_Long_Unsigned. |
| -- The result is always full width, the caller must do a masking operation if |
| -- the modulus is less than 2 ** Long_Long_Long_Unsigned'Size. |
| |
| -- Preconditions in this unit are meant for analysis only, not for run-time |
| -- checking, so that the expected exceptions are raised. This is enforced |
| -- by setting the corresponding assertion policy to Ignore. Postconditions |
| -- and contract cases should not be executed at runtime as well, in order |
| -- not to slow down the execution of these functions. |
| |
| pragma Assertion_Policy (Pre => Ignore, |
| Post => Ignore, |
| Contract_Cases => Ignore, |
| Ghost => Ignore); |
| |
| with System.Exponu; |
| with System.Unsigned_Types; |
| |
| package System.Exp_LLLU |
| with SPARK_Mode |
| is |
| |
| subtype Long_Long_Long_Unsigned is Unsigned_Types.Long_Long_Long_Unsigned; |
| |
| function Exp_Long_Long_Long_Unsigned is |
| new Exponu (Long_Long_Long_Unsigned); |
| pragma Pure_Function (Exp_Long_Long_Long_Unsigned); |
| |
| end System.Exp_LLLU; |
