Syntax for expressions

The following subjects are mentioned below with regard to the syntax for expressions:

Variables, for example, Voltage
Operators, for example, Multiplication
Functions, for example, Rounding
Examples

VARIABLES

Variables are defined in the Algorithm Variables (qmptc0123m000) session and can be linked to characteristics in the Algorithm - Variables (qmptc0122m000) session.

Variables are case sensitive and must be entered in uppercase to be regarded as proper variables.

Example

Correct	1D, TA, V1, and so on
Incorrect	1d, Ta, ta, v1, and so on

OPERATORS

Arithmetic operators:

* / + -	multiplication/ division/ addition/ subtraction
\	remainder after division
&	linking strings (alphanumeric arrays)

Logical operators

or, and, not

Logical operators are used in Boolean expressions. These expressions are either true or not true. The logical value true corresponds to value 1 and the logical value not true corresponds to 0.

Relational Operators:

=	equal to
<>	not equal to
>	greater than
>=	greater than or equal to
<	less than
<=	less than or equal to

Assignment commands are recorded by means of :=

Priority in expressions:

Arithmetic operators have priority over relational operators
Relational operators have priority over logical operators
The priority sequence for arithmetic operators is: * / \ + -
The priority sequence for logical operators is: not, and, or

Note

These sequences can be modified by means of round brackets.

Example

 3 + 4 * 5 = 23 (3 + 4) * 5 = 35

FUNCTIONS

Arithmetic functions:

round(X,Y,Z)	round off X value
-	Y the number of decimals
-	Z rounding method (down = 0, normal = 1, up = 2)
abs(X)	absolute value of X (abs(-10.3) = 10.3)
int(X)	full value of X (int(11.6) = 11 )
pow(X,Y)	involution (pow(10,2) = 100 )
sqrt(X)	root of X (sqrt(16) = 4 )
min(X,Y)	smallest values of X and Y (min(6,10) = 6 )
max(X,Y)	largest values of X and Y (max(6,10) = 10 )
pi	constant with PI value (3.1415926... )

Goniometric functions:

sin(X), cos(X), tan(X)	sine, cosine, or tangent of X (radians)
asin(X), acos(X), atan(X)	arcsine, arccosine, or arctangent of X
hsin(X), hcos(X), htan(X)	sine-, cosine-, or tangent-hyperbolicus of X

Logarithmic functions:

exp(X)	e-power of X
log(X)	natural logarithm of X with base e
log10(X)	logarithmic value of X with base 10
time	current time
date	current date
date(d,m,y)	date expressed as day, month, and year

For example, date(1,5,1991) = May 1 1991

Date functions:

time	current time
date	current date
date(d,m,y)	date expressed as day, month, and year

For example, date(1,5,1991) = May 1 1991

exp(X)	e-power of X
log(X)	natural logarithm of X with base e
log10(X)	logarithmic value of X with base 10

Example

 5 IN [12,30] = 0 15 IN [12,30] = 1