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3-39 M32R-FPU Software Manual (Rev.1.01)
INSTRUCTIONS
3.2 Instruction description
[Supplemental Operation Description]
The following shows the values of Rsrc1 and Rsrc2 and the operation results when DN = 0 and
DN = 1.
DN = 0
DN = 1
IVLD: Invalid Operation Exception
UIPL: Unimplemented Exception
NaN: Not a Number
SNaN: Signaling NaN
QNaN: Quiet NaN
Rsrc2
UIPL
QNaN SNaN
QNaN
SNaN
+0
+0 +Infinity
+Infinity
IVLD
comparison
invalid
-Infinity
-Infinity
00000000
00000000
00000000
-0
+Infinity +Infinity
-Infinity -Infinity
-0
Rsrc1
Normalized
Number
Normalized
Number
comparison
Denormalized
Number
Denormalized
Number
Rsrc2
QNaN SNaN
QNaN
SNaN
+0, +
+0, + -0, -
-0, -
+Infinity
+Infinity
IVLD
-Infinity
-Infinity
00000000
00000000
00000000
+Infinity
+Infinity
-Infinity
-Infinity
Rsrc1
Normalized Number
Normalized
Number
comparison
Denormalized
Number
Denormalized
Number
Denormalized
Number
Denormalized
Number
comparison
invalid
FCMPFCMP
floating point Instructions
Floating-point compare
[M32R-FPU Extended Instruction]