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FOURFUNC

FOURFUNC

Name


  fourfunc

Purpose


  Compute a Fourier series function (called by fourfit)

Description


  This is to be used in cases where you already know the fundamental period.
  The input independent variable is assumed to be reduced to phase of a
  fundamental period already. The integer part of the number is not
  to the function.

Category


  Mathematical

Calling Sequence


  fourfunc,x,c,f,pder

Inputs


  x - independent variable (phase, between zero and one)
  c - fourier series coefficients
        0 - a(0) -> constant term
        1 - a(1) -> cos(x2pi)
        2 - b(1) -> sin(x2pi)
        3 - a(2) -> cos(2x2pi)
        4 - b(2) -> sin(2x2pi)
    and so on for as many elements as in c

Optional Input Parameters


Keyword Input Parameters


Outputs


  f - Evaluated function value
  pder - (Optional) partial derivatives

Keyword Output Parameters


Common Blocks


Side Effects


Restrictions


Procedure


Modification History


  94/10/10, Written by Marc W. Buie, Lowell Observatory



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