Frequently Asked Question
Declarations of any kind are not supported by the C Function Language, which includes:
• declaration of a local variable,
• declaration of a pointer variable,
• declaration of an array,
• declaration of a structure, a union, or an enumeration,
• declaration of a function, and a function prototype.
All inputs, outputs, variables, and parameters you can define in the "General tab" in the C function block.
In the attachment, you can find the specification of our C function block where you can find what you can use in the C function block and what you can not.
All constants and functions from the following libraries can be used in the C Function Language:
- <math.h>,
- <stdio.h>
The following example shows how the cos function from <math.h> can be used:
out = cos(in);
For calculating absolute value fabs function from <math.h> can be used:
out = fabs(in);
The Advanced C Function allows arbitrary definitions of variables.
More information about the Advanced C function can be found here: Advanced C Function.
