Motorola DSP96002 User Manual
Page 746
MOTOROLA
DSP96002 USER’S MANUAL
C-23
ROUND EXPONENT RANGE DATA ALU OPERATION TAGS MOVE MOVE OUT
TO BEFORE ROUND RESULT OUT RESULT
(UNBIASED) U V TYPE
SP NaN operand or
non signaling NaN (QNAN)
0
0
SP
CORRECT
invalid op
written as DP QNAN
e=7FF mantissa=1.11...11
DP
CORRECT
infinity (overflow) 0 0 SP CORRECT written as DP infinity DP CORRECT normalized (all formats) 0 0 SP CORRECT DP CORRECT < E < − 126 denormalized ( in SP) 1 0 SP CORRECT DP WRONG < − 149 zero (underflow) 0 0 SP CORRECT DP CORRECT non signaling NaN (QNAN) 0 0 SP CORRECT invalid op written as DP QNAN DP CORRECT infinity in SP and SEP 0 0 SP CORRECT written as DP infinity DP CORRECT infinity in SP 0 0 SP WRONG normalized in SEP DP CORRECT normalized (all formats) 0 0 SP TRUNC DP CORRECT Figure C-16. Data ALU Results/Move Compatibility Summary
SP 127
e=7FF mantissa=1.00...00
SP 127
SP -150
SP E
SEP NaN operand or
e=7FF mantissa=1.11...11
SEP 1023
e=7FF mantissa=1.00...00
SEP 127
SEP -127
SEP -150< e < -126 denormalized in SP 0 0 SP WRONG
normalized in SEP
DP CORRECT
SEP -1023< e < -149 zero in SP 0 0 SP WRONG
normalized in SEP
DP CORRECT
SEP -1054< e< -1022 zero in SP 0 1 SP WRONG
denormalized in SEP
DP CORRECT
SEP e< -1053 zero in SP 0 0 SP CORRECT
zero in SEP (underflow)
DP CORRECT