fparser Module Reference

This public domain function parser module is intended for applications where a set of mathematical expressions is specified at runtime and is then evaluated for a large number of variable values. This is done by compiling the set of function strings into byte code, which is interpreted very efficiently for the various variable values. More...

Functions/Subroutines
subroutine, public	finalizef ()
	...
subroutine, public	initf (n)
	...
subroutine, public	parsef (i, funcstr, var)
	Parse ith function string FuncStr and compile it into bytecode.
real(rn) function, public	evalf (i, val)
	...
real(kind=rn) function, public	evalfd (id_fun, ipar, vals, h, err)
	Evaluates derivatives.

Variables
integer, public	evalerrtype
type(tcomp), dimension(:), pointer	comp => NULL()

Detailed Description

This public domain function parser module is intended for applications where a set of mathematical expressions is specified at runtime and is then evaluated for a large number of variable values. This is done by compiling the set of function strings into byte code, which is interpreted very efficiently for the various variable values.

Author

Roland Schmehl Rolan.nosp@m.d.Sc.nosp@m.hmehl.nosp@m.@mac.nosp@m.h.uni.nosp@m.-kar.nosp@m.lsruh.nosp@m.e.de

Function/Subroutine Documentation

finalizef()

subroutine, public fparser::finalizef

...

Definition at line 100 of file fparser.F.

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initf()

subroutine, public fparser::initf

(

integer, intent(in)

n

)

...

Parameters

n

...

Definition at line 129 of file fparser.F.

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parsef()

subroutine, public fparser::parsef	(	integer, intent(in)	i,
		character(len=*), intent(in)	funcstr,
		character(len=*), dimension(:), intent(in)	var
	)

Parse ith function string FuncStr and compile it into bytecode.

Parameters

i	Function identifier
FuncStr	Function string
Var	Array with variable names

Definition at line 147 of file fparser.F.

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evalf()

real(rn) function, public fparser::evalf	(	integer, intent(in)	i,
		real(rn), dimension(:), intent(in)	val
	)

...

Parameters

i	...
Val	...

Returns

...

Definition at line 179 of file fparser.F.

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evalfd()

real(kind=rn) function, public fparser::evalfd	(	integer, intent(in)	id_fun,
		integer, intent(in)	ipar,
		real(kind=rn), dimension(:), intent(inout)	vals,
		real(kind=rn), intent(in)	h,
		real(kind=rn), intent(out)	err
	)

Evaluates derivatives.

Parameters

id_fun	...
ipar	...
vals	...
h	...
err	...

Returns

...

Author

Main algorithm from Numerical Recipes Ridders, C.J.F. 1982 - Advances in Engineering Software, Vol.4, no. 2, pp. 75-76

Definition at line 975 of file fparser.F.

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Variable Documentation

evalerrtype

integer, public fparser::evalerrtype

Definition at line 32 of file fparser.F.

comp

type(tcomp), dimension(:), pointer fparser::comp => NULL()

Definition at line 92 of file fparser.F.