HP Prime Graphing NW280AAABA manual Integer manipulation

Integer manipulation

The result of integer arithmetic can be further analyzed, and manipulated, by viewing it in the Edit Integer dialog.

1.In Home view, use the cursor keys to select the result of interest.

2.Press Sw(Base).

The Edit Integer dialog appears. The Was field at the top shows the result you selected in Home view.

The hex and decimal equivalents are shown under the Out field, followed by a bit-by-bit representation of the integer.

Symbols beneath the bit representation show the keys you can press to edit the integer. (Note that this doesn’t change the result of the calculation in Home view.) The keys are:

–<or >(Shift): these keys shift the bits one space to the left (or right). With each press, the new integer represented appears in the Out field (and in the hex and decimal fields below it).

–=or \(Bits): these keys increase (or decrease) the wordsize. The new wordsize is appended to the value shown in the Out field.

–Q(Neg): returns the two’s complement (that is, each bit in the specified wordsize is inverted and one is added. The new integer represented appears in the Out field (and in the hex and decimal fields below it).

–+or w(Cycle base): displays the integer in the Out field in another base.

Menu buttons provide some additional options:

: returns all changes to their original state

: cycles through the bases; same as pressing +

: toggles the wordsize between signed and unsigned

Basic integer arithmetic 585