eldo_user

Once assigned an initial value, variables can be reassigned with the = operator:
set a = 2.0
set b = 3.0
a = a + b/2
Eldo Control Language
Statement Overview
Note
+=, -=, *=, /=, … operators are also available (a = a + b/2 is equivalent to writing a += b/2).
Related Topics
Variables
Numbers
Generally, numerical variables are double-precision floating point numbers. If a number is used
as an index to address a vector, it is automatically truncated to a signed 32-bit integer.
Scalar variables holding numbers are similar to (local) .PARAM in regular simulation syntax.
The usual mathematical operators (+, -, *, /, %, **, ++, --, ==, !=, =, &&, ||, !) are
available to form expressions using numbers. A library of mathematical functions is also
available (sin(), cos(), abs(), and so on).
The sensitive functions such as sqrt(), exp(), or log() are protected against floating-point
overflows and so on. If for some reason it is still necessary to use the native exp() function, then
the set of such native functions is available, prefixed with “unsafe_”. For example
“unsafe_exp(1e300)” will blow up.
exp() is calculated accurately until exp(80), beyond which, the function is extrapolated linearly.
Related Topics
Variables
Library of Functions for Tasks
Complex Numbers
Complex numbers are also supported. Operators that work on complex numbers are: “+”, “-”,
“*”, “/”, “++”, “--”, “==”, “!=”.
Complex numbers can be created using the functions ritocomplex or mptocomplex or can be
complex results of a simulation.
Eldo® User's Manual, 15.3 823