Interdependent Parameters

Interdependent Parameters (IDP)

This menu contains three Littrow IDP samples and New IDP item. These four items add to the end of the project structure the IDP part. The user can edit on your needs this part of project structure according to the rules written in the remarks of this part. By default, the dependent parameters are added to the scan output. In order to suppress the output of the dependent parameter, you need to insert the $ symbol at the beginning of the line with its definition.

In interpretation of the formulas were used software presented on the website http://muparser.beltoforion.de.
The following conventions are used in this software product in the implementation of advanced features.

The name character set
“0 1 2 3 4 5 6 7 8 9 _”
“a b c d e f g h i j k l m n o p q r s t u v w x y z”
“A B C D E F G H I J K L M N O P Q R S T U V W X Y Z”
is used for:

function identifiers

variable identifiers

constant identifiers

The following table gives an overview of the functions supported. It lists the function names, the number of arguments and a brief description.

Name	Argc.	Explanation
sin	1	sine function
cos	1	cosine function
tan	1	tangent function
asin	1	arc sine function
acos	1	arc cosine function
atan	1	arc tangent function
sinh	1	hyperbolic sine function
cosh	1	hyperbolic cosine
tanh	1	hyperbolic tangent function
asinh	1	hyperbolic arc sine function
acosh	1	hyperbolic arc tangent function
atanh	1	hyperbolic arc tangent function
log2	1	logarithm to the base 2
log10	1	logarithm to the base 10
log	1	logarithm to the base 10
ln	1	logarithm to base e (2.71828...)
exp	1	e raised to the power of x
sqrt	1	square root of a value
sign	1	sign function -1 if x<0; 1 if x>0
rint	1	round to nearest integer
abs	1	absolute value
min	var.	min of all arguments
max	var.	max of all arguments
sum	var.	sum of all arguments
avg	var.	mean value of all arguments

The following table lists the default binary supported operators.

Operator	Description	Priority
=	assignment	-1
&&	logical and	1
||	logical or	2
<=	less or equal	4
>=	greater or equal	4
!=	not equal	4
==	equal	4
>	greater than	4
<	less than	4
+	addition	5
-	subtraction	5
*	multiplication	6
/	division	6
^	raise x to the power of y	7

There is built in support for the if then else operator. It uses lazy evaluation in order to make sure only the necessary branch of the expression is evaluated.

Operator	Description	Remarks
? :	if then else operator a = (b<c) ? d : e	C++ style syntax

In addition MC Grating software includes some built-in edit checks, but nevertheless the user is solely responsible for the physical meaning of the dependent parameters in the range of arguments.