| /* |
| * Copyright (c) 2016-2020 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_NEMATH_H |
| #define ARM_COMPUTE_NEMATH_H |
| |
| #include <arm_neon.h> |
| #include <array> |
| |
| namespace arm_compute |
| { |
| /** Calculate floor of a vector. |
| * |
| * @param[in] val Input vector value in F32 format. |
| * |
| * @return The calculated floor vector. |
| */ |
| float32x4_t vfloorq_f32(float32x4_t val); |
| |
| /** Calculate round value of a vector to nearest with ties to even. |
| * |
| * @param[in] val Input vector value in F32 format. |
| * |
| * @return The calculated round vector. |
| */ |
| float32x4_t vroundq_rte_f32(float32x4_t val); |
| |
| /** Calculate inverse square root. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated inverse square root. |
| */ |
| float32x2_t vinvsqrt_f32(float32x2_t x); |
| |
| /** Calculate inverse square root. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated inverse square root. |
| */ |
| float32x4_t vinvsqrtq_f32(float32x4_t x); |
| |
| /** Calculate reciprocal. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated reciprocal. |
| */ |
| float32x2_t vinv_f32(float32x2_t x); |
| |
| /** Calculate reciprocal. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated reciprocal. |
| */ |
| float32x4_t vinvq_f32(float32x4_t x); |
| |
| /** Perform a 7th degree polynomial approximation using Estrin's method. |
| * |
| * @param[in] x Input vector value in F32 format. |
| * @param[in] coeffs Polynomial coefficients table. |
| * |
| * @return The calculated approximation. |
| */ |
| float32x4_t vtaylor_polyq_f32(float32x4_t x, const std::array<float32x4_t, 8> &coeffs); |
| |
| /** Calculate exponential |
| * |
| * @param[in] x Input vector value in F32 format. |
| * |
| * @return The calculated exponent. |
| */ |
| float32x4_t vexpq_f32(float32x4_t x); |
| |
| /** Calculate logarithm |
| * |
| * @param[in] x Input vector value in F32 format. |
| * |
| * @return The calculated logarithm. |
| */ |
| float32x4_t vlogq_f32(float32x4_t x); |
| |
| /** Calculate hyperbolic tangent. |
| * |
| * tanh(x) = (e^2x - 1)/(e^2x + 1) |
| * |
| * @note We clamp x to [-5,5] to avoid overflowing issues. |
| * |
| * @param[in] val Input vector value in F32 format. |
| * |
| * @return The calculated Hyperbolic Tangent. |
| */ |
| float32x4_t vtanhq_f32(float32x4_t val); |
| |
| /** Calculate n power of a number. |
| * |
| * pow(x,n) = e^(n*log(x)) |
| * |
| * @param[in] val Input vector value in F32 format. |
| * @param[in] n Powers to raise the input to. |
| * |
| * @return The calculated power. |
| */ |
| float32x4_t vpowq_f32(float32x4_t val, float32x4_t n); |
| |
| /** Round to the nearest division by a power-of-two using exponent |
| * |
| * @note This function calculates the following expression: (x + 2^n -1 ) / 2^n where n = exponent |
| * |
| * @param[in] x Vector of 4 elements |
| * @param[in] exponent Vector of 4 elements with integer value used to round to nearest division by a power-of-two |
| * |
| * @return the nearest division by a power-of-two using exponent |
| */ |
| int32x4_t rounding_divide_by_pow2(int32x4_t x, int32x4_t exponent); |
| |
| /** Round to the nearest division by a power-of-two using exponent |
| * |
| * @note This function calculates the following expression: (x + 2^n -1 ) / 2^n where n = exponent |
| * |
| * @param[in] x Vector of 4 elements |
| * @param[in] exponent Integer value used to round to nearest division by a power-of-two |
| * |
| * @return the nearest division by a power-of-two using exponent |
| */ |
| int32x4_t rounding_divide_by_pow2(int32x4_t x, int exponent); |
| |
| /** Round to the nearest division by a power-of-two using exponent |
| * |
| * @note This function calculates the following expression: (x + 2^n -1 ) / 2^n where n = exponent |
| * |
| * @param[in] x Element to divide. |
| * @param[in] exponent Integer value used to round to nearest division by a power-of-two |
| * |
| * @return the nearest division by a power-of-two using exponent |
| */ |
| int32_t rounding_divide_by_pow2(int32_t x, int exponent); |
| |
| /** Converts from uint8x16 to float32x4x4_t |
| * |
| * @param[in] in Vector of uint8 to be converted |
| * |
| * @return Converted vector of float |
| */ |
| float32x4x4_t convert_uint8x16_to_float32x4x4(const uint8x16_t &in); |
| |
| /** Converts from int8x16 to float32x4x4_t |
| * |
| * @param[in] in Vector of int8 to be converted |
| * |
| * @return Converted vector of float |
| */ |
| float32x4x4_t convert_int8x16_to_float32x4x4(const int8x16_t &in); |
| |
| /** Converts to float32x4x4_t from the specified templated 16 elements vectors |
| * |
| * @param[in] in Vector of float to be converted |
| * |
| * @return Converted vector of float |
| */ |
| template <typename T> |
| float32x4x4_t convert_to_float32x4x4(const T &in); |
| |
| /** Converts from two float32x4x3_t to just one uint8x8x3_t |
| * |
| * @param[in] in1 First input vector of float to be converted |
| * @param[in] in2 Second input vector of float to be converted |
| * @param[out] out Converted output vector uint8 to store the result |
| */ |
| void convert_float32x4x3_to_uint8x8x3(const float32x4x3_t &in1, const float32x4x3_t &in2, uint8x8x3_t &out); |
| |
| /** Converts from two float32x4x4_t to just one uint8x16_t |
| * |
| * @param[in] in Vector of float to be converted |
| * @param[out] out Converted vector of uint8 to store the result |
| */ |
| void convert_float32x4x4_to_uint8x16(const float32x4x4_t &in, uint8x16_t &out); |
| |
| /** Converts from float32x4x4_t to just one int8x16_t |
| * |
| * @param[in] in Vector of float to be converted |
| * @param[out] out Converted vector of uint8 to store the result |
| */ |
| void convert_float32x4x4_to_int8x16(const float32x4x4_t &in, int8x16_t &out); |
| |
| /** Calculate sine. |
| * |
| * @param[in] val Input vector value in radians, F32 format. |
| * |
| * @return The calculated sine. |
| */ |
| float32x4_t vsinq_f32(float32x4_t val); |
| |
| /** Calculate sine. |
| * |
| * @param[in] val Input vector value in radians, F32 format. |
| * |
| * @return The calculated sine. |
| */ |
| float32x2_t vsin_f32(float32x2_t val); |
| |
| #ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC |
| /** Calculate hyperbolic tangent. |
| * |
| * tanh(x) = (e^2x - 1)/(e^2x + 1) |
| * |
| * @note We clamp x to [-5,5] to avoid overflowing issues. |
| * |
| * @param[in] val Input vector value in F16 format. |
| * |
| * @return The calculated Hyperbolic Tangent. |
| */ |
| float16x8_t vtanhq_f16(float16x8_t val); |
| |
| /** Calculate round value of a vector to nearest with ties to even. |
| * |
| * @param[in] val Input vector value in F16 format. |
| * |
| * @return The calculated round vector. |
| */ |
| float16x8_t vroundq_rte_f16(float16x8_t val); |
| |
| /** Calculate reciprocal. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated reciprocal. |
| */ |
| float16x4_t vinv_f16(float16x4_t x); |
| |
| /** Calculate reciprocal. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated reciprocal. |
| */ |
| float16x8_t vinvq_f16(float16x8_t x); |
| |
| /** Calculate inverse square root. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated inverse square root. |
| */ |
| float16x4_t vinvsqrt_f16(float16x4_t x); |
| |
| /** Calculate inverse square root. |
| * |
| * @param[in] x Input value. |
| * |
| * @return The calculated inverse square root. |
| */ |
| float16x8_t vinvsqrtq_f16(float16x8_t x); |
| |
| /** Calculate exponential |
| * |
| * @param[in] x Input vector value in F16 format. |
| * |
| * @return The calculated exponent. |
| */ |
| float16x8_t vexpq_f16(float16x8_t x); |
| |
| /** Calculate n power of a number. |
| * |
| * pow(x,n) = e^(n*log(x)) |
| * |
| * @param[in] val Input vector value in F16 format. |
| * @param[in] n Powers to raise the input to. |
| * |
| * @return The calculated power. |
| */ |
| float16x8_t vpowq_f16(float16x8_t val, float16x8_t n); |
| |
| /** Calculate sine. |
| * |
| * @param[in] val Input vector value in radians, F16 format. |
| * |
| * @return The calculated sine. |
| */ |
| float16x8_t vsinq_f16(float16x8_t val); |
| |
| #endif /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */ |
| } // namespace arm_compute |
| #include "arm_compute/core/NEON/NEMath.inl" |
| #endif /* ARM_COMPUTE_NEMATH_H */ |