Synopsis

(Required) The value of a complex expression of floating type shall only be cast to a floating type which is narrower or of the same size.

Enabled by default

Yes

Severity/Certainty

Low/Medium

Full description

A complex expression of floating type was found that is cast to a wider or different underlying type.

Coding standards

Code examples

The following code example fails the check and will give a warning:

void example(void) {
  float array[10];
  // architecture dependant
  double x = (double)(array[5] + 3.0f); 
}

The following code example passes the check and will not give a warning about this issue:

void example(void) {
	float array[10];

	// A non complex expression is considered safe
	double x = (double)(array[5]);
}