b'\n \n \n
 
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sfderiv3 (4.0)
index
user/ediazp/Mderiv3.c
\n Second order derivative along axis\n

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\n Synopsis
       sfderiv3 < in.rsf > out.rsf axis=1 operator=2

\nint axis=[1] axis to differentiate
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\nint operator=[2] 1 backward, 2 centered, 3 forward
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\n Parameters
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int axis=1
\t
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int operator=2
\t
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