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65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_spline_interp_init_f32.c
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* Description: Floating-point cubic spline initialization function
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*
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* $Date: 13 November 2019
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* $Revision: V1.6.0
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*
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* Target Processor: Cortex-M cores
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* -------------------------------------------------------------------- */
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/*
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* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "arm_math.h"
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/**
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* @ingroup groupInterpolation
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*/
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/**
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@addtogroup SplineInterpolate
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@{
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*/
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/**
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* @brief Initialization function for the floating-point cubic spline interpolation.
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* @param[in,out] S points to an instance of the floating-point spline structure.
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* @param[in] n number of known data points (must > 1).
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* @param[in] type type of cubic spline interpolation (boundary conditions)
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*/
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void arm_spline_init_f32(
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arm_spline_instance_f32 * S,
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uint32_t n,
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arm_spline_type type,
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float32_t * buffer)
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{
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S->n_x = n;
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S->type = type;
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/* Type (boundary conditions):
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* - Natural spline ( S1''(x1)=0 ; Sn''(xn)=0 )
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* - Parabolic runout spline ( S1''(x1)=S2''(x2) ; Sn-1''(xn-1)=Sn''(xn) )
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*/
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S->buffer = buffer;
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}
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/**
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* @} end of SplineInterpolate group
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*/
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