Stereo System User Manual

B-150 DSP96002 USER’S MANUAL MOTOROLA
When comparing two values, GL is true if the values are not equal and both values being compared are
valid floating-point numbers. The GL condition is false if either number is a NaN even though the values
are not equal.
B.3.9 Unordered(x,y) or x?y
Unordered(x,y), or x?y, returns the value TRUE if x is unordered with y, and returns FALSE otherwise. This
is an arithmetic function.
d2=d0?d1 Program ICycles
Words
fcmp d0,d1 #0,d2.l ;set ccr bits 2 2
inc d2 ffun ;set true if unordered 1 1
--- ---
Totals: 3 3
B.3.10Class(x)
Class(x) tells which of the following ten classes x falls into:
1. signaling NaN
2. quiet NaN
3. -infinity
4. negative normalized nonzero
5. negative denormalized
6. -0
7. +0
8. positive denormalized
9. positive normalized nonzero
10. +infinity
Class(x) function applies to single precision floating-point numbers.