Filtering for IEEE Values

You can filter IEEE NaN, infinity, or denormalized floating-point values by specifying a filter in the following form:

    operator ieee-tag

The only comparison operators you can use are equal and not equal.

The ieee-tag represents an encoding of IEEE floating-point values, as explained in the following table:

IEEE Tag Value	Meaning
$nan	NaN (Not a number), either Quiet or Signaling
$nanq	Quiet NaN
$nans	Signaling NaN
$inf	Infinity, either Positive or Negative
$pinf	Positive Infinity
$ninf	Negative Infinity
$denorm	Denormalized number, either positive or negative
$pdenorm	Positive denormalized number
$ndenorm	Negative denormalized number

The following figure shows an example of filtering an array for IEEE values. The bottom left Variable Window shows how TotalView displays the unfiltered array. Notice the INF, -INF, NANQ, and NANS values. Then other two windows show filtered displays. The top right window only shows infinite values. The center window only shows the values of denormalized numbers.

Array Data Filtering for IEEE Values