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3
3-45 M32R-FPU Software Manual (Rev.1.01)
INSTRUCTIONS
3.2 Instruction description
[Supplemental Operation Description]
The following shows the values of Rsrc1, Rsrc2 and Rdest and the operation results when DN
= 0 and DN = 1.
DN=0
Value after Multiplication Operation
Value after Addition Operation
IVLD: Invalid Operation Exception
UIPL: Unimplemented Exception
NaN: Not a Number
SNaN: Signaling NaN
QNaN: Quiet NaN
Note: The rounding mode is “-0” when rounding toward “-Infinity”, and “+0” when rounding
toward any other direction.
Rsrc2
Multiplication
UIPL
QNaN
QNaN
SNaN
QNaN
SNaN
+0
+0
+0
+0
+Infinity
+Infinity
Infinity
IVLD
-Infinity
-Infinity
IVLD
IVLD
-Infinity
+Infinity
Infinity
-0
-0
-0
+Infinity
-Infinity
-0
Rsrc1
Normalized
Number
Normalized
Number
Denormalized
Number
Denormalized
Number
Value after Multiplication Operation
add
(Note)
(Note)
QNaN
QNaN
QNaN
SNaN
+0
+0
-0
-0
+0
+Infinity
+Infinity
IVLD
UIPL
IVLD
IVLD
-Infinity
-Infinity
-Infinity
-Infinity
-0
+Infinity
-Infinity
Rdest
Normalized
Number
Normalized
Number
Denormalized
Number
FMADDFMADD
floating point Instructions
Floating-point multiply and add
[M32R-FPU Extended Instruction]
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