DIV (M64)

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EAX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e0             	movsxd r12,eax
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 24.27
- Reference cycles: 19.11
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EAX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e0             	movsxd r12,eax
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 44.34
- Reference cycles: 34.97
- UOPS_RETIRED.ALL: 16.0

Latency operand 1 → 2 (address, index register): 15 ≤ lat ≤ 35

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EAX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e0             	movsxd r12,eax
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 24.38
- Reference cycles: 19.37
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EAX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e0             	movsxd r12,eax
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 44.3
- Reference cycles: 34.84
- UOPS_RETIRED.ALL: 16.0

Latency operand 1 → 3 (address, base register): 16 ≤ lat ≤ 36

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EDX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e2             	movsxd r12,edx
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 24.98
- Reference cycles: 19.76
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EDX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e2             	movsxd r12,edx
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 44.98
- Reference cycles: 35.23
- UOPS_RETIRED.ALL: 16.0

Latency operand 1 → 3 (address, index register): 16 ≤ lat ≤ 36

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EDX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e2             	movsxd r12,edx
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 24.98
- Reference cycles: 19.89
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: MOVSX R12, EDX; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; XOR R14, R12; ; MOV RAX, R8;MOV RDX, R9
Chain latency: 9

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 63 e2             	movsxd r12,edx
   6:	4d 31 e6             	xor    r14,r12
   9:	4d 31 e6             	xor    r14,r12
   c:	4d 31 e6             	xor    r14,r12
   f:	4d 31 e6             	xor    r14,r12
  12:	4d 31 e6             	xor    r14,r12
  15:	4d 31 e6             	xor    r14,r12
  18:	4d 31 e6             	xor    r14,r12
  1b:	4d 31 e6             	xor    r14,r12
  1e:	4c 89 c0             	mov    rax,r8
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 45.0
- Reference cycles: 35.62
- UOPS_RETIRED.ALL: 16.0

Latency operand 2 → 2: 11 ≤ lat ≤ 31

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RAX, R8; OR RAX, R8; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; ; MOV RDX, R9
Chain latency: 10

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 21 c0             	and    rax,r8
   6:	4c 09 c0             	or     rax,r8
   9:	48 09 c0             	or     rax,rax
   c:	48 09 c0             	or     rax,rax
   f:	48 09 c0             	or     rax,rax
  12:	48 09 c0             	or     rax,rax
  15:	48 09 c0             	or     rax,rax
  18:	48 09 c0             	or     rax,rax
  1b:	48 09 c0             	or     rax,rax
  1e:	48 09 c0             	or     rax,rax
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 21.39
- Reference cycles: 17.16
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RAX, R8; OR RAX, R8; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; ; MOV RDX, R9
Chain latency: 10

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 21 c0             	and    rax,r8
   6:	4c 09 c0             	or     rax,r8
   9:	48 09 c0             	or     rax,rax
   c:	48 09 c0             	or     rax,rax
   f:	48 09 c0             	or     rax,rax
  12:	48 09 c0             	or     rax,rax
  15:	48 09 c0             	or     rax,rax
  18:	48 09 c0             	or     rax,rax
  1b:	48 09 c0             	or     rax,rax
  1e:	48 09 c0             	or     rax,rax
  21:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 41.41
- Reference cycles: 33.15
- UOPS_RETIRED.ALL: 16.0

Latency operand 2 → 3: 12 ≤ lat ≤ 32

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RAX, RDX; AND RAX, R8; OR RAX, R8; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; ; MOV RDX, R9
Chain latency: 11

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	48 21 d0             	and    rax,rdx
   6:	4c 21 c0             	and    rax,r8
   9:	4c 09 c0             	or     rax,r8
   c:	48 09 c0             	or     rax,rax
   f:	48 09 c0             	or     rax,rax
  12:	48 09 c0             	or     rax,rax
  15:	48 09 c0             	or     rax,rax
  18:	48 09 c0             	or     rax,rax
  1b:	48 09 c0             	or     rax,rax
  1e:	48 09 c0             	or     rax,rax
  21:	48 09 c0             	or     rax,rax
  24:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 22.97
- Reference cycles: 18.33
- UOPS_RETIRED.ALL: 17.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RAX, RDX; AND RAX, R8; OR RAX, R8; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; OR RAX, RAX; ; MOV RDX, R9
Chain latency: 11

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	48 21 d0             	and    rax,rdx
   6:	4c 21 c0             	and    rax,r8
   9:	4c 09 c0             	or     rax,r8
   c:	48 09 c0             	or     rax,rax
   f:	48 09 c0             	or     rax,rax
  12:	48 09 c0             	or     rax,rax
  15:	48 09 c0             	or     rax,rax
  18:	48 09 c0             	or     rax,rax
  1b:	48 09 c0             	or     rax,rax
  1e:	48 09 c0             	or     rax,rax
  21:	48 09 c0             	or     rax,rax
  24:	4c 89 ca             	mov    rdx,r9

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 43.0
- Reference cycles: 33.67
- UOPS_RETIRED.ALL: 17.0

Latency operand 3 → 2: 11 ≤ lat ≤ 31

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RDX, RAX; AND RDX, R9; OR RDX, R9; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; ; MOV RAX, R8
Chain latency: 11

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	48 21 c2             	and    rdx,rax
   6:	4c 21 ca             	and    rdx,r9
   9:	4c 09 ca             	or     rdx,r9
   c:	48 09 d2             	or     rdx,rdx
   f:	48 09 d2             	or     rdx,rdx
  12:	48 09 d2             	or     rdx,rdx
  15:	48 09 d2             	or     rdx,rdx
  18:	48 09 d2             	or     rdx,rdx
  1b:	48 09 d2             	or     rdx,rdx
  1e:	48 09 d2             	or     rdx,rdx
  21:	48 09 d2             	or     rdx,rdx
  24:	4c 89 c0             	mov    rax,r8

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 22.0
- Reference cycles: 17.55
- UOPS_RETIRED.ALL: 17.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RDX, RAX; AND RDX, R9; OR RDX, R9; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; ; MOV RAX, R8
Chain latency: 11

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	48 21 c2             	and    rdx,rax
   6:	4c 21 ca             	and    rdx,r9
   9:	4c 09 ca             	or     rdx,r9
   c:	48 09 d2             	or     rdx,rdx
   f:	48 09 d2             	or     rdx,rdx
  12:	48 09 d2             	or     rdx,rdx
  15:	48 09 d2             	or     rdx,rdx
  18:	48 09 d2             	or     rdx,rdx
  1b:	48 09 d2             	or     rdx,rdx
  1e:	48 09 d2             	or     rdx,rdx
  21:	48 09 d2             	or     rdx,rdx
  24:	4c 89 c0             	mov    rax,r8

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 13.0
- Core cycles: 41.97
- Reference cycles: 33.02
- UOPS_RETIRED.ALL: 17.0

Latency operand 3 → 3: 11 ≤ lat ≤ 31

Experiment 1 (fast division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RDX, R9; OR RDX, R9; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; ; MOV RAX, R8
Chain latency: 10

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 21 ca             	and    rdx,r9
   6:	4c 09 ca             	or     rdx,r9
   9:	48 09 d2             	or     rdx,rdx
   c:	48 09 d2             	or     rdx,rdx
   f:	48 09 d2             	or     rdx,rdx
  12:	48 09 d2             	or     rdx,rdx
  15:	48 09 d2             	or     rdx,rdx
  18:	48 09 d2             	or     rdx,rdx
  1b:	48 09 d2             	or     rdx,rdx
  1e:	48 09 d2             	or     rdx,rdx
  21:	4c 89 c0             	mov    rax,r8

Init:

MOV R8, 0;
MOV R9, 0;
MOV RCX, 1;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 21.0
- Reference cycles: 16.64
- UOPS_RETIRED.ALL: 16.0

Experiment 2 (slow division)

Instruction: DIV qword ptr [R14]
Chain instructions: AND RDX, R9; OR RDX, R9; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; OR RDX, RDX; ; MOV RAX, R8
Chain latency: 10

Code:

   0:	49 f7 36             	div    QWORD PTR [r14]
   3:	4c 21 ca             	and    rdx,r9
   6:	4c 09 ca             	or     rdx,r9
   9:	48 09 d2             	or     rdx,rdx
   c:	48 09 d2             	or     rdx,rdx
   f:	48 09 d2             	or     rdx,rdx
  12:	48 09 d2             	or     rdx,rdx
  15:	48 09 d2             	or     rdx,rdx
  18:	48 09 d2             	or     rdx,rdx
  1b:	48 09 d2             	or     rdx,rdx
  1e:	48 09 d2             	or     rdx,rdx
  21:	4c 89 c0             	mov    rax,r8

Init:

MOV R8, 133;
MOV R9, 0x343a9ed744556677;
MOV RCX, 0x75e6e44fccddeeff;
MOV [R14], RCX;
MOV RAX, R8;
MOV RDX, R9

Show nanoBench command
Results:
- Instructions retired: 12.0
- Core cycles: 40.97
- Reference cycles: 32.11
- UOPS_RETIRED.ALL: 16.0

DIV (M64) - Latency

Operands

Latency operand 1 → 2 (address, base register): 15 ≤ lat ≤ 35

Latency operand 1 → 2 (address, index register): 15 ≤ lat ≤ 35

Latency operand 1 → 3 (address, base register): 16 ≤ lat ≤ 36

Latency operand 1 → 3 (address, index register): 16 ≤ lat ≤ 36

Latency operand 2 → 2: 11 ≤ lat ≤ 31

Latency operand 2 → 3: 12 ≤ lat ≤ 32

Latency operand 3 → 2: 11 ≤ lat ≤ 31

Latency operand 3 → 3: 11 ≤ lat ≤ 31

Latency operand 1 → 2 (address, base register): 15 ≤ lat ≤ 35

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 1 → 2 (address, index register): 15 ≤ lat ≤ 35

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 1 → 3 (address, base register): 16 ≤ lat ≤ 36

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 1 → 3 (address, index register): 16 ≤ lat ≤ 36

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 2 → 2: 11 ≤ lat ≤ 31

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 2 → 3: 12 ≤ lat ≤ 32

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 3 → 2: 11 ≤ lat ≤ 31

Experiment 1 (fast division)

Experiment 2 (slow division)

Latency operand 3 → 3: 11 ≤ lat ≤ 31

Experiment 1 (fast division)

Experiment 2 (slow division)