Hitachi SH7750 Programming Manual page 283

FMAC Special Cases
FRn FR0
+Norm
Norm Norm MAC
0
INF
+0 Norm MAC
0
INF
–0 +Norm MAC
–Norm
+0
–0
INF
+INF +Norm +INF
–Norm
0
+INF
–INF Invalid
–INF +Norm –INF
–Norm
0
+INF Invalid
–INF –INF
Denorm Norm
0
INF
!sNaN Denorm
qNaN 0
INF
Norm
!sNaN qNaN
All types sNaN
SNaN all types
Note: When DN = 1, the value of a denormalized number is treated as 0.
-Norm +0
INF Invalid
INF Invalid
+0
–0
+0 –0 +0
–0 +0 –0
INF Invalid
Invalid
+INF
Invalid
Invalid
Invalid
FRm
–0 +INF –INF
INF
Invalid
INF
+0 Invalid
INF
–0 +INF –INF
+0 –INF +INF
–0 Invalid
+0
INF
Invalid
+INF
Invalid
+INF
+INF
–INF
–INF
–INF Invalid
Invalid
Invalid
Rev. 2.0, 03/99, page 269 of 396
Denorm qNaN sNaN
Error
qNaN
Invalid