Here is simple script:

<SDL>
  #include "functions.inc"
  #declare f_y=function(ph,rad){rad*cos(ph)}
  #macro Calc(X,Y,Z)
    #debug concat(
      "  Y=",str(Y,6,3),
      "  function=",str(f_y(f_ph(X,Y,Z),f_r(X,Y,Z)),6,3),
      "  parser=",str(f_r(X,Y,Z)*cos(f_ph(X,Y,Z)),6,3),
      "\n"
    )
  #end
  Calc(0, 2,0)
  Calc(2, 2,3)
  Calc(2, 1,3)
  Calc(2, 0,3)
  Calc(2,-1,3)
  Calc(2,-2,3)
  Calc(0,-2,0)
</SDL>

I expect it to display three identical columns of values as follow:
  Y= 2.000  function= 2.000  parser= 2.000
  Y= 2.000  function= 2.000  parser= 2.000
  Y= 1.000  function= 1.000  parser= 1.000
  Y= 0.000  function= 0.000  parser= 0.000
  Y=-1.000  function=-1.000  parser=-1.000
  Y=-2.000  function=-2.000  parser=-2.000
  Y=-2.000  function=-2.000  parser=-2.000
unfortunatelly it outputs various values when ph function is accesed via
another function:
  Y= 2.000  function= 2.000  parser= 2.000
  Y= 2.000  function=-1.716  parser= 2.000
  Y= 1.000  function=-1.557  parser= 1.000
  Y= 0.000  function=-1.500  parser= 0.000
  Y=-1.000  function=-1.557  parser=-1.000
  Y=-2.000  function=-1.716  parser=-2.000
  Y=-2.000  function= 2.000  parser=-2.000
Any idea why ? Any confirmation that it can be a bug ?

ABX

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