Mercurial > octave

view liboctave/external/odepack/svnorm.f @ 33636:3ec6fcce7715 default tip @

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gui: Avoid using HAVE_QSCINTILLA in more header files. * gui-settings.h, settings-dialog.h: Don't include QScintilla header. Forward-declare QSciLexer class instead if necessary. Declare all member functions unconditionally. * gui-settings.cc (gui_settings::get_valid_lexer_styles, gui_settings::read_lexer_settings), settings-dialog.cc (settings_dialog::update_lexer, settings_dialog::get_lexer_settings, settings_dialog::write_lexer_settings): Define functions unconditionally. * gui-preferences-ed.h: Don't include QScintilla header. Remove definition of local variable os_eol_mode from header. * gui-preferences-ed.cc (os_eol_mode): Move definition of local variable here.
author Markus Mützel <markus.muetzel@gmx.de>
date Tue, 28 May 2024 14:54:58 +0200
parents f4d4d83f15c5
children
line wrap: on
line source

      REAL FUNCTION SVNORM (N, V, W)
C***BEGIN PROLOGUE  SVNORM
C***SUBSIDIARY
C***PURPOSE  Weighted root-mean-square vector norm.
C***TYPE      SINGLE PRECISION (SVNORM-S, DVNORM-D)
C***AUTHOR  Hindmarsh, Alan C., (LLNL)
C***DESCRIPTION
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    SVNORM = SQRT( (1/N) * SUM( V(i)*W(i) )**2 )
C
C***SEE ALSO  SLSODE
C***ROUTINES CALLED  (NONE)
C***REVISION HISTORY  (YYMMDD)
C   791129  DATE WRITTEN
C   890501  Modified prologue to SLATEC/LDOC format.  (FNF)
C   890503  Minor cosmetic changes.  (FNF)
C   930809  Renamed to allow single/double precision versions. (ACH)
C***END PROLOGUE  SVNORM
C**End
      INTEGER N,   I
      REAL V, W,   SUM
      DIMENSION V(N), W(N)
C
C***FIRST EXECUTABLE STATEMENT  SVNORM
      SUM = 0.0E0
      DO 10 I = 1,N
 10     SUM = SUM + (V(I)*W(I))**2
      SVNORM = SQRT(SUM/N)
      RETURN
C----------------------- END OF FUNCTION SVNORM ------------------------
      END