1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
//===-- Exhaustive tests for bfloat16 division ----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "exhaustive_test.h"
#include "src/__support/FPUtil/FPBits.h"
#include "src/__support/FPUtil/bfloat16.h"
#include "test/UnitTest/FPMatcher.h"
#include "utils/MPFRWrapper/MPCommon.h"
#include "utils/MPFRWrapper/MPFRUtils.h"
namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
using LIBC_NAMESPACE::fputil::BFloat16;
static BFloat16 div_func(BFloat16 x, BFloat16 y) { return x / y; }
struct Bfloat16DivChecker : public virtual LIBC_NAMESPACE::testing::Test {
using FloatType = BFloat16;
using FPBits = LIBC_NAMESPACE::fputil::FPBits<bfloat16>;
using StorageType = typename FPBits::StorageType;
uint64_t check(uint16_t x_start, uint16_t x_stop, uint16_t y_start,
uint16_t y_stop, mpfr::RoundingMode rounding) {
mpfr::ForceRoundingMode r(rounding);
if (!r.success)
return true;
uint16_t xbits = x_start;
uint64_t failed = 0;
do {
BFloat16 x = FPBits(xbits).get_val();
uint16_t ybits = xbits;
do {
BFloat16 y = FPBits(ybits).get_val();
mpfr::BinaryInput<BFloat16> input{x, y};
bool correct = TEST_MPFR_MATCH_ROUNDING_SILENTLY(
mpfr::Operation::Div, input, div_func(x, y), 0.5, rounding);
failed += (!correct);
} while (ybits++ < y_stop);
} while (xbits++ < x_stop);
return failed;
}
};
using LlvmLibcBfloat16ExhaustiveDivTest =
LlvmLibcExhaustiveMathTest<Bfloat16DivChecker, 1 << 2>;
// range: [0, inf]
static constexpr uint16_t POS_START = 0x0000U;
static constexpr uint16_t POS_STOP = 0x7f80U;
// range: [-0, -inf]
static constexpr uint16_t NEG_START = 0x8000U;
static constexpr uint16_t NEG_STOP = 0xff80U;
TEST_F(LlvmLibcBfloat16ExhaustiveDivTest, PositiveRange) {
test_full_range_all_roundings(POS_START, POS_STOP, POS_START, POS_STOP);
}
TEST_F(LlvmLibcBfloat16ExhaustiveDivTest, NegativeRange) {
test_full_range_all_roundings(NEG_START, NEG_STOP, NEG_START, NEG_STOP);
}
|
