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big: Add test for factorial.

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This commit is contained in:
Jeroen van Rijn
2021-07-31 23:47:52 +02:00
parent e80ac18324
commit 50feeaa285
3 changed files with 36 additions and 3 deletions
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4
core/math/big/build.bat
View File

@@ -1,7 +1,7 @@
@echo off
odin run . -vet
:odin run . -vet
:odin build . -build-mode:shared -show-timings -o:minimal -use-separate-modules
:odin build . -build-mode:shared -show-timings -o:size -use-separate-modules
odin build . -build-mode:shared -show-timings -o:size -use-separate-modules
:odin build . -build-mode:shared -show-timings -o:speed -use-separate-modules
python test.py

18
core/math/big/test.odin
View File

@@ -276,3 +276,21 @@ PyRes :: struct {
return PyRes{res = r, err = .None};
}
/*
dest = factorial(n)
*/
@export test_factorial :: proc "c" (n: DIGIT) -> (res: PyRes) {
context = runtime.default_context();
err: Error;
dest := &Int{};
defer destroy(dest);
if err = factorial(dest, n); err != .None { return PyRes{res=":factorial:factorial(n):", err=err}; }
r: cstring;
r, err = int_itoa_cstring(dest, 16, context.temp_allocator);
if err != .None { return PyRes{res=":factorial:itoa(res):", err=err}; }
return PyRes{res = r, err = .None};
}

17
core/math/big/test.py
View File

@@ -134,6 +134,8 @@ int_shl = load(l.test_shl, [c_char_p, c_longlong], Res)
int_shr = load(l.test_shr, [c_char_p, c_longlong], Res)
int_shr_signed = load(l.test_shr_signed, [c_char_p, c_longlong], Res)
int_factorial = load(l.test_factorial, [c_uint64], Res)
def test(test_name: "", res: Res, param=[], expected_error = Error.Okay, expected_result = "", radix=16):
passed = True
r = None
@@ -321,6 +323,16 @@ def test_shr_signed(a = 0, bits = 0, expected_error = Error.Okay):
return test("test_shr_signed", res, [a, bits], expected_error, expected_result)
def test_factorial(n = 0, expected_error = Error.Okay):
args = [n]
res = int_factorial(*args)
expected_result = None
if expected_error == Error.Okay:
expected_result = math.factorial(n)
return test("test_factorial", res, [n], expected_error, expected_result)
# TODO(Jeroen): Make sure tests cover edge cases, fast paths, and so on.
#
# The last two arguments in tests are the expected error and expected result.
@@ -394,7 +406,10 @@ TESTS = {
[ -149195686190273039203651143129455, 12 ],
[ 611105530635358368578155082258244262, 12 ],
[ 149195686190273039203651143129455, 12 ],
]
],
test_factorial: [
[ 12_345 ],
],
}
total_passes = 0