------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . G C C . S H I F T S -- -- -- -- S p e c -- -- -- -- Copyright (C) 2013-2014, 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. -- -- -- -- -- -- -- -- -- -- -- -- 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 -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- Ada implementation of libgcc: 64-bit shifts pragma Restrictions (No_Elaboration_Code); package System.GCC.Shifts is pragma Pure; function Lshrdi3 (Val : Unsigned_64; Count : Integer) return Unsigned_64; pragma Export (C, Lshrdi3, "__lshrdi3"); -- Logical right rotation of Val by Count position. Return 0 if Count is -- greater or equal than 64, and Val if less than 1. function Ashrdi3 (Val : Unsigned_64; Count : Integer) return Unsigned_64; pragma Export (C, Ashrdi3, "__ashrdi3"); -- Arithmetic right rotation of Val by Count position. Return 0 or -1 if -- Count is greater or equal than 64, and Val if less than 1. function Ashldi3 (Val : Unsigned_64; Count : Integer) return Unsigned_64; pragma Export (C, Ashldi3, "__ashldi3"); -- Left rotation of Val by Count position. Return 0 if Count is greater or -- equal than 64, and Val if less than 1. end System.GCC.Shifts;