1 SUBROUTINE LORENB (U,PS,PI,PF)
3 C CERN PROGLIB# U102 LORENB .VERSION KERNFOR 4.04 821124
4 C ORIG. 20/08/75 L.PAPE
6 DOUBLE PRECISION PF4, FN
7 DIMENSION PS(4),PI(4),PF(4)
9 IF (PS(4).EQ.U) GO TO 17
10 PF4 = (PI(4)*PS(4)+PI(3)*PS(3)+PI(2)*PS(2)+PI(1)*PS(1)) / U
11 FN = (PF4+PI(4)) / (PS(4)+U)
12 PF(1)= PI(1) + FN*PS(1)
13 PF(2)= PI(2) + FN*PS(2)
14 PF(3)= PI(3) + FN*PS(3)