gsldif
input parametersThe argument to the functions with mnemonics of backward
,
central
or forward
is a pair (
f,
x)
,
where f is the virtual machine code for a real valued function
of a real variable, and x is the input to f where the
derivative is sought. Real numbers are represented according to
math.
The argument to the functions with mnemonics of t_backward
,
t_central
or t_forward
is a pair ((
f,
t),
x)
,
where f and x are as above, and t is a tolerance represented
as a floating point number. The tolerance is passed through
to the GNU Scientific library (GSL) differentiation routines.
When no tolerance is specified, the default is 1.0e-8
.