TotalView Users Guide - CI Wiki

Figure 214: Array Data
Filtering by Comparison
Examining and Analyzing Arrays
If the value you’re using in the comparison is an integer constant, TotalView
performs a signed comparison. If you add the letter u or U to the constant,
TotalView performs an unsigned comparison.
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 the following
table describes:
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
Figure 215 on page 340 shows an example of filtering an array for IEEE values.
The bottom window in this figure shows how TotalView displays the
unfiltered array. Notice the NaNQ, and NaNS, INF, and –INF values. The
other two windows show filtered displays: the top window shows only infinite
values; the remaining window only shows the values of denormalized
numbers.
TotalView Users Guide: version 8.7 339