Xilinx MicroBlaze Reference Manual page 231

Table 5-2: Floating-Point Comparison Operation
Comparison Type
Description OpSel (rB) > (rA)
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
UG984 (v2018.2) June 21, 2018
(rB) < (rA)
(rD) ← 0 (rD) ← 0
(rD) ← 0 (rD) ← 1
(rD) ← 0 (rD) ← 0
(rD) ← 0 (rD) ← 1
(rD) ← 1 (rD) ← 0
(rD) ← 1 (rD) ← 1
(rD) ← 1 (rD) ← 0
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Chapter 5: MicroBlaze Instruction Set Architecture
Operand Relationship
isSigNaN(rA) or
(rB) = (rA)
isSigNaN(rB)
(rD) ← 0 (rD) ← 1
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 0 (rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 1 (rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 1 (rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 0 (rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 0 (rD) ← 1
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 1 (rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
isQuietNaN(rA) or
isQuietNaN(rB)
(rD) ← 1
(rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 0
(rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
(rD) ← 1
(rD) ← 0
FSR[IO]
← 1
ESR[EC] ← 00110
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