basis8.F

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C
!||====================================================================
!||    basis8   ../starter/source/elements/solid/solid8p/basis8.F
!||--- called by ------------------------------------------------------
!||    basisf   ../starter/source/elements/solid/solid8p/basisf.F
!||====================================================================
      SUBROUTINE basis8 (R,S,T,H,PR,PS,PT)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
C     REAL
      my_real
     .   r, s, t
C     REAL
      my_real
     .   h(*), pr(*), ps(*), pt(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
C     REAL
      my_real
     .   rp, sp, tp, rm, sm, tm
      rp=one+r
      sp=one+s
      tp=one+t
      rm=one-r
      sm=one-s
      tm=one-t
      h(1)=one_over_8*rm*sm*tm
      h(2)=one_over_8*rp*sm*tm
      h(3)=one_over_8*rp*sp*tm
      h(4)=one_over_8*rm*sp*tm
      h(5)=one_over_8*rm*sm*tp
      h(6)=one_over_8*rp*sm*tp
      h(7)=one_over_8*rp*sp*tp
      h(8)=one_over_8*rm*sp*tp
      pr(1)=-one_over_8*sm*tm      
      pr(2)=-pr(1)
      pr(3)= one_over_8*sp*tm
      pr(4)=-pr(3)
      pr(5)=-one_over_8*sm*tp
      pr(6)=-pr(5)
      pr(7)= .125*sp*tp
      pr(8)=-pr(7)
      ps(1)=-one_over_8*rm*tm
      ps(2)=-one_over_8*rp*tm
      ps(3)=-ps(2)
      ps(4)=-ps(1)
      ps(5)=-one_over_8*rm*tp
      ps(6)=-one_over_8*rp*tp
      ps(7)=-ps(6)
      ps(8)=-ps(5)
      pt(1)=-one_over_8*rm*sm
      pt(2)=-one_over_8*rp*sm
      pt(3)=-one_over_8*rp*sp
      pt(4)=-one_over_8*rm*sp      
      pt(5)=-pt(1)
      pt(6)=-pt(2)
      pt(7)=-pt(3)
      pt(8)=-pt(4)
C
      RETURN
      END