Maksim Shabunin
10 years ago
parent
5473dbebed
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5c5d0e6743
3 changed files with 125 additions and 80 deletions
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2015, Itseez Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef __OPENCV_HAL_NEON_UTILS_HPP__ |
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#define __OPENCV_HAL_NEON_UTILS_HPP__ |
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#include "opencv2/hal/defs.h" |
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#if CV_NEON |
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inline int32x2_t cv_vrnd_s32_f32(float32x2_t v) |
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{ |
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static int32x2_t v_sign = vdup_n_s32(1 << 31), |
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v_05 = vreinterpret_s32_f32(vdup_n_f32(0.5f)); |
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int32x2_t v_addition = vorr_s32(v_05, vand_s32(v_sign, vreinterpret_s32_f32(v))); |
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return vcvt_s32_f32(vadd_f32(v, vreinterpret_f32_s32(v_addition))); |
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} |
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inline int32x4_t cv_vrndq_s32_f32(float32x4_t v) |
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{ |
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static int32x4_t v_sign = vdupq_n_s32(1 << 31), |
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v_05 = vreinterpretq_s32_f32(vdupq_n_f32(0.5f)); |
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int32x4_t v_addition = vorrq_s32(v_05, vandq_s32(v_sign, vreinterpretq_s32_f32(v))); |
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return vcvtq_s32_f32(vaddq_f32(v, vreinterpretq_f32_s32(v_addition))); |
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} |
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inline uint32x2_t cv_vrnd_u32_f32(float32x2_t v) |
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{ |
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static float32x2_t v_05 = vdup_n_f32(0.5f); |
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return vcvt_u32_f32(vadd_f32(v, v_05)); |
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} |
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inline uint32x4_t cv_vrndq_u32_f32(float32x4_t v) |
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{ |
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static float32x4_t v_05 = vdupq_n_f32(0.5f); |
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return vcvtq_u32_f32(vaddq_f32(v, v_05)); |
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} |
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inline float32x4_t cv_vrecpq_f32(float32x4_t val) |
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{ |
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float32x4_t reciprocal = vrecpeq_f32(val); |
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reciprocal = vmulq_f32(vrecpsq_f32(val, reciprocal), reciprocal); |
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reciprocal = vmulq_f32(vrecpsq_f32(val, reciprocal), reciprocal); |
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return reciprocal; |
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} |
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inline float32x2_t cv_vrecp_f32(float32x2_t val) |
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{ |
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float32x2_t reciprocal = vrecpe_f32(val); |
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reciprocal = vmul_f32(vrecps_f32(val, reciprocal), reciprocal); |
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reciprocal = vmul_f32(vrecps_f32(val, reciprocal), reciprocal); |
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return reciprocal; |
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} |
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inline float32x4_t cv_vrsqrtq_f32(float32x4_t val) |
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{ |
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float32x4_t e = vrsqrteq_f32(val); |
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e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(e, e), val), e); |
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e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(e, e), val), e); |
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return e; |
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} |
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inline float32x2_t cv_vrsqrt_f32(float32x2_t val) |
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{ |
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float32x2_t e = vrsqrte_f32(val); |
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e = vmul_f32(vrsqrts_f32(vmul_f32(e, e), val), e); |
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e = vmul_f32(vrsqrts_f32(vmul_f32(e, e), val), e); |
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return e; |
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} |
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inline float32x4_t cv_vsqrtq_f32(float32x4_t val) |
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{ |
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return cv_vrecpq_f32(cv_vrsqrtq_f32(val)); |
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} |
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inline float32x2_t cv_vsqrt_f32(float32x2_t val) |
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{ |
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return cv_vrecp_f32(cv_vrsqrt_f32(val)); |
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} |
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#endif |
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#endif // __OPENCV_HAL_NEON_UTILS_HPP__
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