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M32R-FPU Software Manual (Rev.1.01)
INSTRUCTIONS
3.2 Instruction description
DN=1
Value after Multiplication Operation
Value after Subtraction 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.
Rsrc1
Rsrc2
QNaN
QNaN
SNaN
QNaN
SNaN
 +0, +
 +0, +
  -0, -
 -0, -
+0
+0
+Infinity
+Infinity
Infinity
IVLD
-Infinity
-Infinity
IVLD
IVLD
-Infinity
+Infinity
Infinity
-0
-0
+Infinity
-Infinity
Normalized 
Number
Normalized 
Number
Multiplication
Denormalized 
Number
Denormalized 
Number
Denormalized 
Number
Denormalized 
Number
Value after Multiplication Operation
(Note)
(Note)
QNaN
QNaN
QNaN
SNaN
+0
+0
-0
-0
+0
+Infinity
-Infinity
IVLD
IVLD
IVLD
-Infinity
+Infinity
-Infinity
+Infinity
-0
+Infinity
-Infinity
Rdest
Normalized 
Number
Normalized 
Number
Subtraction
FMSUB
FMSUB
floating point Instructions
Floating-point multiply and subtract
[M32R-FPU Extended Instruction]