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fix(go): type conversion errors in floorDiv/avmClamp

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- floorDiv returns int64 instead of int32 to match avmClamp signature
- instr.Arg wrapped in int64() for avmClamp/avmQ0Clamp calls
- Test expected value cast to int32

fix(julia): add Q16_SCALE export to Q16_16 module
This commit is contained in:
allaun 2026-06-30 18:10:48 -05:00
parent c4619d0d97
commit 3c4e039e48
4 changed files with 39 additions and 12 deletions
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8
go/avm.go
View file

@ -25,12 +25,12 @@ func avmQ0Clamp(x int64) int32 {
return int32(x)
}
func floorDiv(a, b int64) int32 {
func floorDiv(a, b int64) int64 {
if b == 0 { panic("division by zero") }
q := a / b
r := a % b
if r != 0 && ((a ^ b) < 0) { q-- }
return int32(q)
return q
}
func ltQ16V6(a, b int32) bool {
@ -161,11 +161,11 @@ func Step(s State, prog []Instr) (*State, error) {
switch instr.Op {
case PushQ16:
stack = append(stack, Val{Ty: Q16_16, Q: avmClamp(instr.Arg)})
stack = append(stack, Val{Ty: Q16_16, Q: avmClamp(int64(instr.Arg))})
case PushBool:
stack = append(stack, Val{Ty: Bool, Bval: instr.Arg2})
case PushQ0:
stack = append(stack, Val{Ty: Q0_16, Q: avmQ0Clamp(instr.Arg)})
stack = append(stack, Val{Ty: Q0_16, Q: avmQ0Clamp(int64(instr.Arg))})
case Pop:
if len(stack) == 0 { return nil, errors.New("empty stack") }
stack = stack[:len(stack)-1]

2
go/avm_test.go
View file

@ -30,7 +30,7 @@ func TestFloorDiv(t *testing.T) {
}
s, err := runTest(prog, 100)
if err != nil { t.Fatal(err) }
expected := (3 * Q16Scale) / 5
expected := int32((3 * Q16Scale) / 5)
if s.Stack[0].Q != expected { t.Fatalf("got %d, expected %d", s.Stack[0].Q, expected) }
}

3
julia/CoreFormalism/Q16_16.jl
View file

@ -14,7 +14,7 @@ in `Q16_16Numerics.lean`.
"""
module Q16_16
export Q16_16Value,
export Q16_16Value, Q16_SCALE,
of_raw_int, to_int,
zero, one, epsilon, two, half,
q16_min_raw, q16_max_raw, q16_scale,
@ -27,6 +27,7 @@ export Q16_16Value,
const q16_min_raw = -2147483648
const q16_max_raw = 2147483647
const q16_scale = 65536
const Q16_SCALE = q16_scale
"""
Q16_16Value

32
signatures/avm_verification_receipt.json
View file

@ -10,7 +10,7 @@
{
"property": "Q16 scale (2^16)",
"python": 65536,
"wolfram": "65536 sixty-five thousand, five hundred thirty-six 10000000000000000_2 2^16 m | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9\n65536 mod m | 0 | 1 | 0 | 1 | 4 | 2 | 0 | 7 65536 = 2^16 is a perfect 16th power. A regular 65536-gon is constructible with straightedge and compass. 65536 is an even number.",
"wolfram": "65536 sixty-five thousand, five hundred thirty-six 10000000000000000_2 2^16 m | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9\n65536 mod m | 0 | 1 | 0 | 1 | 4 | 2 | 0 | 7 A regular 65536-gon is constructible with straightedge and compass. 65536 = 2^16 is a perfect 16th power. 65536 is an even number.",
"match": true
},
{
@ -29,11 +29,37 @@
"port_tests": {
"Python": {
"passed": true,
"output": "ass\n \u2705 type_mismatch: rejected\n \u2705 stack_overflow: rejected\n \u2705 div_by_zero: rejected\n \u2705 control_flow: jump_if true\n \u2705 locals: store+load\n \u2705 mul_div_roundtrip: 5*3/3 = 5\n\nAll Python tests passed.\n"
"output": "c_add: 5 + 3 = 8\n \u2705 div_q16: 3/5 = 0.6\n \u2705 saturation: max-1 + 2 = max\n \u2705 v6_comparison: 5 cases pass\n \u2705 type_mismatch: rejected\n \u2705 stack_overflow: rejected\n \u2705 div_by_zero: rejected\n \u2705 control_flow: jump_if true\n \u2705 locals: store+load\n \u2705 mul_div_roundtrip: 5*3/3 = 5\n\nAll Python tests passed.\n"
},
"Rust": {
"passed": false,
"output": "ured; 0 filtered out; finished in 0.00s\n\n\nrunning 1 test\ntest test_nuvmap_projector ... ok\n\ntest result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s\n\n\nrunning 0 tests\n\ntest result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s\n\n"
},
"Go": {
"passed": false,
"skipped": true,
"reason": "go not found"
},
"C": {
"passed": false,
"output": ""
},
"C++": {
"passed": false,
"output": ""
},
"Julia": {
"passed": true,
"output": "ult: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s\n\n\nrunning 0 tests\n\ntest result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s\n\n"
"output": "Test Summary: | Pass Total Time\nAVM ISA | 12 12 0.9s\n"
},
"R": {
"passed": false,
"output": "PASS: add Q16\nPASS: jump_if\nPASS: store/load\nPASS: type error\nPASS: division by zero\n\nAll R AVM tests passed!\n"
},
"Octave": {
"passed": false,
"skipped": true,
"reason": "octave not found"
}
}
}