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Diffstat (limited to 'src/core/NEON/wrapper/scalar/sub.h')
-rw-r--r-- | src/core/NEON/wrapper/scalar/sub.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/core/NEON/wrapper/scalar/sub.h b/src/core/NEON/wrapper/scalar/sub.h new file mode 100644 index 0000000000..1fe51d75fc --- /dev/null +++ b/src/core/NEON/wrapper/scalar/sub.h @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2020 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_WRAPPER_SCALAR_SUB_H +#define ARM_COMPUTE_WRAPPER_SCALAR_SUB_H + +#include <arm_neon.h> + +namespace arm_compute +{ +namespace wrapper +{ +inline uint8_t sub_sat(const uint8_t &a, const uint8_t &b) +{ + const uint8x8_t va = { a, 0, 0, 0, 0, 0, 0, 0 }; + const uint8x8_t vb = { b, 0, 0, 0, 0, 0, 0, 0 }; + return vget_lane_u8(vqsub_u8(va, vb), 0); +} + +inline int16_t sub_sat(const int16_t &a, const int16_t &b) +{ + const int16x4_t va = { a, 0, 0, 0 }; + const int16x4_t vb = { b, 0, 0, 0 }; + return vget_lane_s16(vqsub_s16(va, vb), 0); +} + +inline int32_t sub_sat(const int32_t &a, const int32_t &b) +{ + const int32x2_t va = { a, 0 }; + const int32x2_t vb = { b, 0 }; + return vget_lane_s32(vqsub_s32(va, vb), 0); +} + +inline float sub_sat(const float &a, const float &b) +{ + // No notion of saturation exists in floating point + return a - b; +} + +#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC +inline float16_t sub_sat(const float16_t &a, const float16_t &b) +{ + // No notion of saturation exists in floating point + return a - b; +} +#endif // __ARM_FEATURE_FP16_VECTOR_ARITHMETIC +} // namespace wrapper +} // namespace arm_compute +#endif /* ARM_COMPUTE_WRAPPER_SCALAR_SUB_H */ |