Xilinx MicroBlaze Reference Manual page 195

Table 5-2: Floating Point Comparison Operation
Comparison Type
Description OpSel
Unordered 000
Less-than 001
Equal 010
Less-or-equal 011
Greater-than 100
Not-equal 101
Greater-or-equal 110
MicroBlaze Processor Reference Guide
UG081 (v14.7)
(rB) > (rA) (rB) < (rA)
← 0 ← 0
(rD) (rD)
← 0 ← 1
(rD) (rD)
← 0 ← 0
(rD) (rD)
← 0 ← 1
(rD) (rD)
← 1 ← 0
(rD) (rD)
← 1 ← 1
(rD) (rD)
← 1 ← 0
(rD) (rD)
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Operand Relationship
isSigNaN(rA) or
(rB) = (rA)
isSigNaN(rB)
← 0 ← 1
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 0 ← 0
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 1 ← 0
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 1 ← 0
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 0 ← 0
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 0 ← 1
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 1 ← 0
(rD) (rD)
← 1
FSR[IO]
← 00110
ESR[EC]
Instructions
isQuietNaN(rA) or
isQuietNaN(rB)
← 1
(rD)
← 0
(rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 0
(rD)
← 0
(rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 0
(rD)
← 1
FSR[IO]
← 00110
ESR[EC]
← 1
(rD)
← 0
(rD)
← 1
FSR[IO]
← 00110
ESR[EC]
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