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Commit 439ea40d authored by Umang Yadav's avatar Umang Yadav
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add test for fp8e5m2fnuz

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test/fp8e5m2fnuz.cpp 0 → 100644
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/*
* The MIT License (MIT)
*
* Copyright (c) 2015-2022 Advanced Micro Devices, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <cmath>
#include <migraphx/float_equal.hpp>
#include <migraphx/migraphx_float8.hpp>
#include <migraphx/half.hpp>
#include <migraphx/ranges.hpp>
#include "test.hpp"
#include <limits>
float fp8e5m2fnuz_to_fp32_value(uint8_t input)
{
constexpr std::array<float, 256> e4m3fnuz_lut = {
0.0,
7.62939453125e-06,
1.52587890625e-05,
2.288818359375e-05,
3.0517578125e-05,
3.814697265625e-05,
4.57763671875e-05,
5.340576171875e-05,
6.103515625e-05,
7.62939453125e-05,
9.1552734375e-05,
0.0001068115234375,
0.0001220703125,
0.000152587890625,
0.00018310546875,
0.000213623046875,
0.000244140625,
0.00030517578125,
0.0003662109375,
0.00042724609375,
0.00048828125,
0.0006103515625,
0.000732421875,
0.0008544921875,
0.0009765625,
0.001220703125,
0.00146484375,
0.001708984375,
0.001953125,
0.00244140625,
0.0029296875,
0.00341796875,
0.00390625,
0.0048828125,
0.005859375,
0.0068359375,
0.0078125,
0.009765625,
0.01171875,
0.013671875,
0.015625,
0.01953125,
0.0234375,
0.02734375,
0.03125,
0.0390625,
0.046875,
0.0546875,
0.0625,
0.078125,
0.09375,
0.109375,
0.125,
0.15625,
0.1875,
0.21875,
0.25,
0.3125,
0.375,
0.4375,
0.5,
0.625,
0.75,
0.875,
1.0,
1.25,
1.5,
1.75,
2.0,
2.5,
3.0,
3.5,
4.0,
5.0,
6.0,
7.0,
8.0,
10.0,
12.0,
14.0,
16.0,
20.0,
24.0,
28.0,
32.0,
40.0,
48.0,
56.0,
64.0,
80.0,
96.0,
112.0,
128.0,
160.0,
192.0,
224.0,
256.0,
320.0,
384.0,
448.0,
512.0,
640.0,
768.0,
896.0,
1024.0,
1280.0,
1536.0,
1792.0,
2048.0,
2560.0,
3072.0,
3584.0,
4096.0,
5120.0,
6144.0,
7168.0,
8192.0,
10240.0,
12288.0,
14336.0,
16384.0,
20480.0,
24576.0,
28672.0,
32768.0,
40960.0,
49152.0,
57344.0,
std::numeric_limits<float>::quiet_NaN(),
-7.62939453125e-06,
-1.52587890625e-05,
-2.288818359375e-05,
-3.0517578125e-05,
-3.814697265625e-05,
-4.57763671875e-05,
-5.340576171875e-05,
-6.103515625e-05,
-7.62939453125e-05,
-9.1552734375e-05,
-0.0001068115234375,
-0.0001220703125,
-0.000152587890625,
-0.00018310546875,
-0.000213623046875,
-0.000244140625,
-0.00030517578125,
-0.0003662109375,
-0.00042724609375,
-0.00048828125,
-0.0006103515625,
-0.000732421875,
-0.0008544921875,
-0.0009765625,
-0.001220703125,
-0.00146484375,
-0.001708984375,
-0.001953125,
-0.00244140625,
-0.0029296875,
-0.00341796875,
-0.00390625,
-0.0048828125,
-0.005859375,
-0.0068359375,
-0.0078125,
-0.009765625,
-0.01171875,
-0.013671875,
-0.015625,
-0.01953125,
-0.0234375,
-0.02734375,
-0.03125,
-0.0390625,
-0.046875,
-0.0546875,
-0.0625,
-0.078125,
-0.09375,
-0.109375,
-0.125,
-0.15625,
-0.1875,
-0.21875,
-0.25,
-0.3125,
-0.375,
-0.4375,
-0.5,
-0.625,
-0.75,
-0.875,
-1.0,
-1.25,
-1.5,
-1.75,
-2.0,
-2.5,
-3.0,
-3.5,
-4.0,
-5.0,
-6.0,
-7.0,
-8.0,
-10.0,
-12.0,
-14.0,
-16.0,
-20.0,
-24.0,
-28.0,
-32.0,
-40.0,
-48.0,
-56.0,
-64.0,
-80.0,
-96.0,
-112.0,
-128.0,
-160.0,
-192.0,
-224.0,
-256.0,
-320.0,
-384.0,
-448.0,
-512.0,
-640.0,
-768.0,
-896.0,
-1024.0,
-1280.0,
-1536.0,
-1792.0,
-2048.0,
-2560.0,
-3072.0,
-3584.0,
-4096.0,
-5120.0,
-6144.0,
-7168.0,
-8192.0,
-10240.0,
-12288.0,
-14336.0,
-16384.0,
-20480.0,
-24576.0,
-28672.0,
-32768.0,
-40960.0,
-49152.0,
-57344.0,
};
return e4m3fnuz_lut[input];
}
TEST_CASE(test_fp8_cast_to_float)
{
std::vector<uint8_t> bit_vals(256);
std::iota(bit_vals.begin(), bit_vals.end(), 0);
EXPECT(bool{std::all_of(bit_vals.begin(), bit_vals.end(), [](uint8_t bit_val) {
migraphx_fp8::fp8e5m2fnuz fp8_val(bit_val, migraphx_fp8::fp8e5m2fnuz::from_bits());
if(std::isnan(float(fp8_val)) and std::isnan(fp8e5m2fnuz_to_fp32_value(bit_val)))
{
return true;
}
return migraphx::float_equal(float(fp8_val), fp8e5m2fnuz_to_fp32_value(bit_val));
})});
}
TEST_CASE(test_positive_zero)
{
float zero = 0.0;
migraphx_fp8::fp8e5m2fnuz fp8_zero(zero);
EXPECT(fp8_zero.is_zero());
EXPECT(migraphx::float_equal(zero, float(fp8_zero)));
}
TEST_CASE(test_negative_zero)
{
float nzero = -0.0;
float pzero = 0.0;
migraphx_fp8::fp8e5m2fnuz fp8_nzero(nzero);
EXPECT(fp8_nzero.is_zero());
// negative zero gets converted to positive zero
EXPECT(migraphx::float_equal(pzero, float(fp8_nzero)));
}
TEST_CASE(test_nan_1)
{
float fnan = std::numeric_limits<float>::quiet_NaN();
migraphx_fp8::fp8e5m2fnuz fp8_nan(fnan);
EXPECT(fp8_nan.is_nan());
EXPECT(std::isnan(fp8_nan));
}
TEST_CASE(test_nan_2)
{
auto fnan = std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::quiet_NaN();
migraphx_fp8::fp8e5m2fnuz fp8_nan(fnan.data, migraphx_fp8::fp8e5m2fnuz::from_bits());
EXPECT(fp8_nan.is_nan());
EXPECT(std::isnan(fp8_nan));
EXPECT(std::isnan(float(fp8_nan)));
}
TEST_CASE(test_infinity_1)
{
float finf = std::numeric_limits<float>::infinity();
// no inf in fp8e5m2fnuz it gets clipped to Nans
migraphx_fp8::fp8e5m2fnuz fp8_nan(finf);
EXPECT(fp8_nan.is_nan());
EXPECT(std::isnan(float(fp8_nan)));
}
TEST_CASE(test_infinity_2)
{
// neg inf
float finf = -1.0 * std::numeric_limits<float>::infinity();
// no inf in fp8e5m2fnuz it gets clipped to NaNs
migraphx_fp8::fp8e5m2fnuz fp8_nan(finf);
EXPECT(fp8_nan.is_nan());
EXPECT(std::isnan(float(fp8_nan)));
}
TEST_CASE(test_numeric_max_1)
{
float fmax = std::numeric_limits<float>::max();
migraphx_fp8::fp8e5m2fnuz fp8_max(fmax);
EXPECT(fp8_max == std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::max());
}
TEST_CASE(test_numeric_max_2)
{
// gets clipped to max
float fmax = 2 * std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::max();
migraphx_fp8::fp8e5m2fnuz fp8_max(fmax);
EXPECT(fp8_max == std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::max());
}
TEST_CASE(test_numeric_lowest_1)
{
float flowest = std::numeric_limits<float>::lowest();
migraphx_fp8::fp8e5m2fnuz fp8_lowest(flowest);
EXPECT(fp8_lowest == std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::lowest());
}
TEST_CASE(test_numeric_lowest_2)
{
// gets clipped to lowest
float fmin = 2.0 * std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::lowest();
migraphx_fp8::fp8e5m2fnuz fp8_lowest(fmin);
EXPECT(fp8_lowest == std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::lowest());
}
TEST_CASE(test_max_eq_lowest)
{
EXPECT(migraphx::float_equal(std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::lowest(),
-1 * std::numeric_limits<migraphx_fp8::fp8e5m2fnuz>::max()));
}
int main(int argc, const char* argv[]) { test::run(argc, argv); }
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