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Diffstat (limited to 'gcc-4.7/gcc/ada/g-mbdira.ads')
| -rw-r--r-- | gcc-4.7/gcc/ada/g-mbdira.ads | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/gcc-4.7/gcc/ada/g-mbdira.ads b/gcc-4.7/gcc/ada/g-mbdira.ads deleted file mode 100644 index c415a24cf..000000000 --- a/gcc-4.7/gcc/ada/g-mbdira.ads +++ /dev/null @@ -1,123 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME COMPONENTS -- --- -- --- G N A T . M B B S _ D I S C R E T E _ R A N D O M -- --- -- --- S p e c -- --- -- --- Copyright (C) 1992-2010, Free Software Foundation, Inc. -- --- -- --- This specification is derived from the Ada Reference Manual for use with -- --- GNAT. The copyright notice above, and the license provisions that follow -- --- apply solely to the contents of the part following the private keyword. -- --- -- --- 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. -- --- -- ------------------------------------------------------------------------------- - --- The implementation used in this package was contributed by Robert --- Eachus. It is based on the work of L. Blum, M. Blum, and M. Shub, SIAM --- Journal of Computing, Vol 15. No 2, May 1986. The particular choices for P --- and Q chosen here guarantee a period of 562,085,314,430,582 (about 2**49), --- and the generated sequence has excellent randomness properties. For further --- details, see the paper "Fast Generation of Trustworthy Random Numbers", by --- Robert Eachus, which describes both the algorithm and the efficient --- implementation approach used here. - --- Formerly, this package was Ada.Numerics.Discrete_Random. It is retained --- here in part to allow users to reconstruct number sequences generated --- by previous versions. - -with Interfaces; - -generic - type Result_Subtype is (<>); - -package GNAT.MBBS_Discrete_Random is - - -- The algorithm used here is reliable from a required statistical point of - -- view only up to 48 bits. We try to behave reasonably in the case of - -- larger types, but we can't guarantee the required properties. So - -- generate a warning for these (slightly) dubious cases. - - pragma Compile_Time_Warning - (Result_Subtype'Size > 48, - "statistical properties not guaranteed for size > 48"); - - -- Basic facilities - - type Generator is limited private; - - function Random (Gen : Generator) return Result_Subtype; - - procedure Reset (Gen : Generator); - procedure Reset (Gen : Generator; Initiator : Integer); - - -- Advanced facilities - - type State is private; - - procedure Save (Gen : Generator; To_State : out State); - procedure Reset (Gen : Generator; From_State : State); - - Max_Image_Width : constant := 80; - - function Image (Of_State : State) return String; - function Value (Coded_State : String) return State; - -private - subtype Int is Interfaces.Integer_32; - subtype Rst is Result_Subtype; - - -- We prefer to use 14 digits for Flt, but some targets are more limited - - type Flt is digits Positive'Min (14, Long_Long_Float'Digits); - - RstF : constant Flt := Flt (Rst'Pos (Rst'First)); - RstL : constant Flt := Flt (Rst'Pos (Rst'Last)); - - Offs : constant Flt := RstF - 0.5; - - K1 : constant := 94_833_359; - K1F : constant := 94_833_359.0; - K2 : constant := 47_416_679; - K2F : constant := 47_416_679.0; - Scal : constant Flt := (RstL - RstF + 1.0) / (K1F * K2F); - - type State is record - X1 : Int := Int (2999 ** 2); - X2 : Int := Int (1439 ** 2); - P : Int := K1; - Q : Int := K2; - FP : Flt := K1F; - Scl : Flt := Scal; - end record; - - type Writable_Access (Self : access Generator) is limited null record; - -- Auxiliary type to make Generator a self-referential type - - type Generator is limited record - Writable : Writable_Access (Generator'Access); - -- This self reference allows functions to modify Generator arguments - Gen_State : State; - end record; - -end GNAT.MBBS_Discrete_Random; |