Compaq ECQD2KCTE Laptop User Manual


 
Instruction Descriptions 4–129
4.10.23 IEEE Floating Square Root
Format:
Operation:
Fc Fb ** (1/2)
Exceptions:
Instruction mnemonics:
Qualifiers:
Description:
The square root of the floating-point operand in register Fb is written to register Fc. (The Fa
field of this instruction must be set to a value of F31.)
The result is rounded to the specified precision. The single-precision operation on a canonical
single-precision value produces a canonical single-precision result.
An invalid operation is signaled if the sign of the operand is less than zero. However, SQRT
(–0) produces a result of –0.
Notes:
Floating-point overflow and underflow are not possible for square root operation. The
underflow enable qualifier is ignored.
SQRTx Fb.rx,Fc.wx
!Floating-point Operate format
Inexact result
Invalid operation
SQRTS Square root S_floating
SQRTT Square root T_floating
Rounding: Chopped (/C)
Dynamic (/D)
Minus infinity (/M)
Trapping: Inexact Enable (/I)
Exception Completion (/S)
Underflow Enable (/U) — See Notes below