Laptop User Manual

Instruction Descriptions 4–111
4.10.6 IEEE Floating Add
Format:
Operation:
Fc ← Fav + Fbv
Exceptions:
Instruction mnemonics:
Qualifiers:
Description:
Register Fa is added to register Fb, and the sum is written to register Fc.
The sum is rounded to the specified precision and then the corresponding range is checked for
overflow/underflow. The single-precision operation on canonical single-precision values pro-
duces a canonical single-precision result.
See Section 4.7.7 for details of the stored result on overflow, underflow, or inexact result.
ADDx Fa.rx,Fb.rx,Fc.wx
!Floating-point Operate format
Invalid Operation
Overflow
Underflow
Inexact Result
ADDS Add S_floating
ADDT Add T_floating
Rounding: Dynamic (/D)
Minus infinity (/M)
Chopped (/C)
Trapping: Exception Completion (/S)
Underflow Enable (/U)
Inexact Enable (/I)