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CM71-00105-1E FUJITSU MICROELECTRONICS LIMITED 459
FR81 Family
APPENDIX
APPENDIX C Supplemental Explanation about FPU Exception Processing
The blank column means that the "p" value is used as the result.
Table C.3-1 Rounding Mode and Rounding Processing of Significand
Rounding
mode
(FCR.RM)
S ≥ 0S < 0
00
B
(Latest
value)
"p+1" if "r^!s^LSB" or "r^s" is true "p+1" if "r^!s^LSB" or "r^s" is true
01
B
(Zero)
10
B
(+∞)
"p+1" if "r∪s" is true
11
B
(-∞)
"p+1" if "r∪s" is true