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/*
* Copyright (c) 2023 Institue of Software Chinese Academy of Sciences (ISCAS).
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/riscv/asm.S"
// void ff_fcmul_add(float *sum, const float *t, const float *c, int len)
func ff_fcmul_add_rvv, zve64f
li t1, 32
1:
vsetvli t0, a3, e32, m4, ta, ma
vle64.v v24, (a0)
sub a3, a3, t0
vnsrl.wx v16, v24, zero
vnsrl.wx v20, v24, t1
vle64.v v24, (a1)
sh3add a1, t0, a1
vnsrl.wx v0, v24, zero
vnsrl.wx v4, v24, t1
vle64.v v24, (a2)
sh3add a2, t0, a2
vnsrl.wx v8, v24, zero
vnsrl.wx v12, v24, t1
vfmacc.vv v16, v0, v8
vfmacc.vv v20, v4, v8
vfnmsac.vv v16, v4, v12
vfmacc.vv v20, v0, v12
vsseg2e32.v v16, (a0)
sh3add a0, t0, a0
bgtz a3, 1b
flw fa0, 0(a1)
flw fa1, 0(a2)
flw fa2, 0(a0)
fmadd.s fa2, fa0, fa1, fa2
fsw fa2, 0(a0)
ret
endfunc
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