Release 4.0

Datatype bool

This is the easiest type. A boolean expresses a truth value. It can be either TRUE or FALSE.

To specify a boolean literal, use either the keyword TRUE or FALSE. Both are case-insensitive.

bFlag = true; // assign the value TRUE to bFlag

Usually you use some kind of operator which returns a boolean value, and then pass it on to a control structure.

// == is an operator which returns a boolean
if (action == 1)
{
	z=sqrt(z*sin(c));
}

// this is not necessary:
if (bFlag == TRUE)
{
	return(sin(z));
}

// because you can simply type this:
if (bFlag)
{
	return(sin(z));
} 

Boolean values are automatically converted to another datatype. Internally a boolean is simply an integer:

TRUE is 1
FALSE is 0

So you can do calculations with booleans:

real b;
complex c;
bool bFlag;

	bFlag=true;
	c=(1,2);
	b=c*bFlag; // bFlag will be converted to 1, so (1,2)*1=(1,2), converting to real results in 1
	bFlag=false;
	b=c*bFlag; // bFlag will be converted to 0, so (1,2)*0=(0,0), converting to real results in 0

ChaosPro not only converts boolean values to other datatypes, but also it converts other datatypes to booleans if needed.

The basic idea is:
TRUE is any value other than 0. FALSE is 0.

consider the following if-statement:

   if (d)
   {
   	z=4;
   }