Hitachi SH7750 Programming Manual page 293

} break;
case PZERO:
case NZERO: switch (data_type_of(n)){
case PINF:
case NINF:
default:
} break;
case PINF :
case NINF : switch (data_type_of(n)){
} break;
}
}
FMUL Special Cases
FRm,DRm
NORM
NORM MUL
+0 0
–0
+INF INF
–INF
DENORM
qNaN
sNaN
Note: When DN = 1, the value of a denormalized number is treated as 0.
Possible Exceptions:
• FPU error
• Invalid operation
• Overflow
• Underflow
• Inexact
invalid(n); break;
zero(n,sign_of(m)^sign_of(n));break;
case PZERO:
case NZERO: invalid(n);
default: inf(n,sign_of(m)^sign_of(n));break
+0 –0
0
+0 –0
–0 +0
Invalid
break;
FRn,DRn
+INF –INF
INF
Invalid
+INF –INF
–INF +INF
DENORM qNaN
Error
qNaN
Rev. 2.0, 03/99, page 279 of 396
sNaN
Invalid