DataMuseum.dk

Presents historical artifacts from the history of:

Rational R1000/400

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about Rational R1000/400

Excavated with: AutoArchaeologist - Free & Open Source Software.


top - download

⟦2575965b0⟧ Ada Source

    Length: 4096 (0x1000)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package Ran1_Package, seg_005381

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─ ⟦5a81ac88f⟧ »Space Info Vol 1« 
        └─⟦this⟧ 

E3 Source Code



with Xlbt_Arithmetic;  
use Xlbt_Arithmetic;

package Ran1_Package is
------------------------------------------------------------------------------
-- Ran1 returns a uniform random deviate between 0.0 and 1.0.  Uses linear
-- congruential methods using three portable not-as-good random number
-- generators.  Near infinite period with no sensible sequential correlation.
--
-- Based upon:  Ran1, pg 196;
-- Numerical Recipes: The Art Of Scientific Computing
-- W. H. Press, B. P. Flannery, S. A. Teukolsky, W. T. Vetterling
-- Cambridge University Press, 1986
------------------------------------------------------------------------------

    type Ran1_Data is private;

    Null_Ran1_Data : constant Ran1_Data;

    function Ran1_Initialize (Iseed : S_Natural) return Ran1_Data;
------------------------------------------------------------------------------
--  Iseed   - Specifies the initial seed value to be passed to the RAN()
--              during our initialization.
-- Called to create and initialize a Ran1_Data area for use with Ran1.
------------------------------------------------------------------------------

    procedure Ran1_Free (Idum : in out Ran1_Data);
------------------------------------------------------------------------------
--  Idum        - Specifies the data area to free.
-- Called to free up the Ran1_Data area allocated by Ran1_Initialize.  It is
-- OK to call this with a null.
------------------------------------------------------------------------------

    function Ran1 (Idum : Ran1_Data) return Float;
------------------------------------------------------------------------------
--  Idum    - Specifies the Ran1_Data to use in calculating the next random
--              value.
-- Called to calculate the next uniform random deviate between 0.0 and 1.0.
------------------------------------------------------------------------------

private

    type Ran1_Data_Rec;  
    type Ran1_Data is access Ran1_Data_Rec;
--/ if R1000 then
    pragma Enable_Deallocation (Ran1_Data);

--/ end if;

    Null_Ran1_Data : constant Ran1_Data := null;

end Ran1_Package;  

E3 Meta Data

    nblk1=3
    nid=0
    hdr6=6
        [0x00] rec0=18 rec1=00 rec2=01 rec3=046
        [0x01] rec0=15 rec1=00 rec2=02 rec3=034
        [0x02] rec0=09 rec1=00 rec2=03 rec3=000
    tail 0x215009e7a819788e82aac 0x42a00088462063203