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author | Chunosov <N.Chunosov@yandex.ru> | 2017-11-03 17:33:15 +0700 |
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committer | Anthony Barbier <anthony.barbier@arm.com> | 2018-11-02 16:35:24 +0000 |
commit | d621bca4e963555a99be4328c8d49d1813789649 (patch) | |
tree | 59503f9d4cdbaafefdba5a2569bf3d88082ad09d /tests/validation/CPP/UtilsQuantizedAsymm.h | |
parent | 5a99ddf2dcf3a5eb49ea85cb8bcc6a43f1496e5e (diff) | |
download | ComputeLibrary-d621bca4e963555a99be4328c8d49d1813789649.tar.gz |
COMPMID-661: directconv-uint8 (#20)
Change-Id: I84f7a1ce3658be0d3c91e65096467258af48f0b6
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/94341
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Diffstat (limited to 'tests/validation/CPP/UtilsQuantizedAsymm.h')
-rw-r--r-- | tests/validation/CPP/UtilsQuantizedAsymm.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tests/validation/CPP/UtilsQuantizedAsymm.h b/tests/validation/CPP/UtilsQuantizedAsymm.h new file mode 100644 index 0000000000..b7b69d588a --- /dev/null +++ b/tests/validation/CPP/UtilsQuantizedAsymm.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2017 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * 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. + */ +#ifndef __ARM_COMPUTE_TEST_VALIDATION_UTILS_QUANTIZED_ASYMM_H__ +#define __ARM_COMPUTE_TEST_VALIDATION_UTILS_QUANTIZED_ASYMM_H__ + +#include <cstdint> + +namespace arm_compute +{ +namespace test +{ +namespace validation +{ +/** Rounded to nearest division by a power-of-two. */ +inline int32_t asymm_rounding_divide_by_pow2(int32_t x, int exponent) +{ + const int32_t mask = (1 << exponent) - 1; + const int32_t threshold = (mask >> 1) + (x < 0 ? 1 : 0); + return (x >> exponent) + ((x & mask) > threshold ? 1 : 0); +} + +/** Multiplication of two integers. The same as ARMv7 NEON VQRDMULH instruction. */ +inline int32_t asymm_int_mult(int32_t a, int32_t b) +{ + bool overflow = a == b && a == std::numeric_limits<int32_t>::min(); + int64_t a_64(a); + int64_t b_64(b); + int64_t ab_64 = a_64 * b_64; + int32_t nudge = ab_64 >= 0 ? (1 << 30) : (1 - (1 << 30)); + int32_t ab_x2_high32 = static_cast<int32_t>((ab_64 + nudge) / (1ll << 31)); + return overflow ? std::numeric_limits<int32_t>::max() : ab_x2_high32; +} +} // namespace validation +} // namespace test +} // namespace arm_compute +#endif /* __ARM_COMPUTE_TEST_VALIDATION_UTILS_QUANTIZED_ASYMM_H__ */ |