use TMath::Abs() instead of ambiguous abs().

[u/mrichter/AliRoot.git] / HERWIG / src / hwurof.f

CDECK  ID>, HWUROF.

*CMZ :-        -26/04/91  11.11.56  by  Bryan Webber

*-- Author :    Bryan Webber

C-----------------------------------------------------------------------

      SUBROUTINE HWUROF(R,P,Q)

C-----------------------------------------------------------------------

C     ROTATES VECTORS BY ROTATION MATRIX R

C-----------------------------------------------------------------------

      DOUBLE PRECISION S1,S2,S3,R(3,3),P(3),Q(3)

      S1=R(1,1)*P(1)+R(1,2)*P(2)+R(1,3)*P(3)

      S2=R(2,1)*P(1)+R(2,2)*P(2)+R(2,3)*P(3)

      S3=R(3,1)*P(1)+R(3,2)*P(2)+R(3,3)*P(3)

      Q(1)=S1

      Q(2)=S2

      Q(3)=S3

      END