Mercurial > octave-nkf

view liboctave/cruft/odepack/vnorm.f @ 20631:69270256b879

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Qt Figure: allow displaying coordinates when hovered axes parent is a uipanel. * Canvas/cc (Canvas::canvasMouseMoveEvent): call "select_object" with the actual Canvas object which may also be a uipanel.
author Pantxo Diribarne <pantxo.diribarne@gmail.com>
date Sat, 10 Oct 2015 13:07:51 +0200
parents 446c46af4b42
children
line wrap: on
line source

      DOUBLE PRECISION FUNCTION VNORM (N, V, W)
CLLL. OPTIMIZE
C-----------------------------------------------------------------------
C THIS FUNCTION ROUTINE COMPUTES THE WEIGHTED ROOT-MEAN-SQUARE NORM
C OF THE VECTOR OF LENGTH N CONTAINED IN THE ARRAY V, WITH WEIGHTS
C CONTAINED IN THE ARRAY W OF LENGTH N..
C   VNORM = SQRT( (1/N) * SUM( V(I)*W(I) )**2 )
C-----------------------------------------------------------------------
      INTEGER N,   I
      DOUBLE PRECISION V, W,   SUM
      DIMENSION V(N), W(N)
      SUM = 0.0D0
      DO 10 I = 1,N
 10     SUM = SUM + (V(I)*W(I))**2
      VNORM = DSQRT(SUM/DBLE(N))
      RETURN
C----------------------- END OF FUNCTION VNORM -------------------------
      END