perm filename RANDOM.SAI[SYS,TOB] blob
sn#036859 filedate 1975-02-13 generic text, type T, neo UTF8
COMMENT ⊗ VALID 00002 PAGES
RECORD PAGE DESCRIPTION
00001 00001
00002 00002 ENTRY RANDOM
00003 ENDMK
⊗;
ENTRY RANDOM;
BEGIN "RANDOM"
SAFE INTEGER ARRAY RAN5[0:255];
INTEGER RAN1,RAN2,RAN3,RAN4,INITFLG;
SIMPLE PROCEDURE RANDOMI;
BEGIN "INIT"
INTEGER I;
RAN1←1;
RAN2←3;
FOR I←0 STEP 1 UNTIL 255 DO
RAN5[I]←RAN2←(RAN2*3)MOD 2↑31 ;
INITFLG ← TRUE;
END "INIT";
SIMPLE INTERNAL REAL PROCEDURE RANDOM;
BEGIN "RANDOM"
IF INITFLG THEN ELSE RANDOMI;
START_CODE MOVE 1,RAN2;MULI 1,1756;IDIVI 2,8191;MOVEM 3,RAN1;END;
COMMENT RAN1←(RAN2*1756) MOD 8191;
RAN3←RAN1 DIV 32;
RAN4←RAN5[RAN3];
RAN2←RAN5[RAN3]←(RAN2*3)MOD 2↑31;
RETURN(RAN4/2↑31)
END "RANDOM";
END "RANDOM"