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090d1f8d0e
Also remove redundant parameters. There are a bunch of other places where we could use this, so just experimenting here. This enables autovectorization to work here.
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include "compat.h"
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inline void vector_fmul(float * av_restrict dst, const float * av_restrict src, int len) {
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for (int i = 0; i < len; i++)
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dst[i] = dst[i] * src[i];
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}
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/**
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* Multiply a vector of floats by a scalar float. Source and
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* destination vectors must overlap exactly or not at all.
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*/
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inline void vector_fmul_scalar(float *dst, float mul, int len) {
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for (int i = 0; i < len; i++)
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dst[i] *= mul;
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}
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/**
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* Calculate the entry wise product of two vectors of floats, and store the result
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* in a vector of floats. The second vector of floats is iterated over
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* in reverse order.
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*
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* @param dst output and first input vector
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* constraints: 32-byte aligned
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* @param src second input vector
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* constraints: 32-byte aligned
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* @param len number of elements in the input
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* constraints: multiple of 16
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*/
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inline void vector_fmul_reverse(float * av_restrict dst, const float * av_restrict src, int len) {
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src += len - 1;
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for (int i = 0; i < len; i++)
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dst[i] *= src[-i];
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}
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