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Diffstat (limited to 'gcc-4.8.3/gcc/ada/a-nuflra.adb')
-rw-r--r-- | gcc-4.8.3/gcc/ada/a-nuflra.adb | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/a-nuflra.adb b/gcc-4.8.3/gcc/ada/a-nuflra.adb new file mode 100644 index 000000000..2c6fbc47f --- /dev/null +++ b/gcc-4.8.3/gcc/ada/a-nuflra.adb @@ -0,0 +1,102 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . N U M E R I C S . F L O A T _ R A N D O M -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2010, 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. -- +-- -- +------------------------------------------------------------------------------ + +package body Ada.Numerics.Float_Random is + + package SRN renames System.Random_Numbers; + use SRN; + + ----------- + -- Image -- + ----------- + + function Image (Of_State : State) return String is + begin + return Image (SRN.State (Of_State)); + end Image; + + ------------ + -- Random -- + ------------ + + function Random (Gen : Generator) return Uniformly_Distributed is + begin + return Random (SRN.Generator (Gen)); + end Random; + + ----------- + -- Reset -- + ----------- + + -- Version that works from calendar + + procedure Reset (Gen : Generator) is + begin + Reset (SRN.Generator (Gen)); + end Reset; + + -- Version that works from given initiator value + + procedure Reset (Gen : Generator; Initiator : Integer) is + begin + Reset (SRN.Generator (Gen), Initiator); + end Reset; + + -- Version that works from specific saved state + + procedure Reset (Gen : Generator; From_State : State) is + begin + Reset (SRN.Generator (Gen), From_State); + end Reset; + + ---------- + -- Save -- + ---------- + + procedure Save (Gen : Generator; To_State : out State) is + begin + Save (SRN.Generator (Gen), To_State); + end Save; + + ----------- + -- Value -- + ----------- + + function Value (Coded_State : String) return State is + G : SRN.Generator; + S : SRN.State; + begin + Reset (G, Coded_State); + Save (G, S); + return State (S); + end Value; + +end Ada.Numerics.Float_Random; |