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4–122 Alpha Architecture Handbook
4.10.17 IEEE Floating Divide
Format:
Operation:
Fc ← Fav / Fbv
Exceptions:
Instruction mnemonics:
Qualifiers:
Description:
The dividend operand in register Fa is divided by the divisor operand in register Fb and the
quotient is written to register Fc.
The quotient 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
produces a canonical single-precision result.
See Section 4.7.7 for details of the stored result on overflow, underflow, or inexact result.
DIVx Fa.rx,Fb.rx,Fc.wx
!Floating-point Operate format
Invalid Operation
Division by Zero
Overflow
Underflow
Inexact Result
DIVS Divide S_floating
DIVT Divide T_floating
Rounding: Dynamic (/D)
Minus infinity (/M)
Chopped (/C)
Trapping: Exception Completion (/S)
Underflow Enable (/U)
Inexact Enable (/I)