106 lines
4.1 KiB
C
106 lines
4.1 KiB
C
/***************************************************************************
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Copyright (c) 2022, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED 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 THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "common.h"
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#if !defined(DOUBLE)
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#define VSETVL_M8(n) __riscv_vsetvl_e32m8(n)
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#define FLOAT_V_T_M8 vfloat32m8_t
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#define VLEV_FLOAT_M8 __riscv_vle32_v_f32m8
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#define VSEV_FLOAT_M8 __riscv_vse32_v_f32m8
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#define VSETVL_M4(n) __riscv_vsetvl_e32m4(n)
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#define FLOAT_VX2_T_M4 vfloat32m4x2_t
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#define VLSEG_FLOAT_M4 __riscv_vlseg2e32_v_f32m4x2
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#define VSSEG_FLOAT_M4 __riscv_vsseg2e32_v_f32m4x2
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#define VLSSEG_FLOAT_M4 __riscv_vlsseg2e32_v_f32m4x2
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#define VSSSEG_FLOAT_M4 __riscv_vssseg2e32_v_f32m4x2
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#else
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#define VSETVL_M8(n) __riscv_vsetvl_e64m8(n)
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#define FLOAT_V_T_M8 vfloat64m8_t
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#define VLEV_FLOAT_M8 __riscv_vle64_v_f64m8
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#define VSEV_FLOAT_M8 __riscv_vse64_v_f64m8
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#define VSETVL_M4(n) __riscv_vsetvl_e64m4(n)
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#define FLOAT_VX2_T_M4 vfloat64m4x2_t
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#define VLSEG_FLOAT_M4 __riscv_vlseg2e64_v_f64m4x2
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#define VSSEG_FLOAT_M4 __riscv_vsseg2e64_v_f64m4x2
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#define VLSSEG_FLOAT_M4 __riscv_vlsseg2e64_v_f64m4x2
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#define VSSSEG_FLOAT_M4 __riscv_vssseg2e64_v_f64m4x2
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#endif
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int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
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{
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if(n <= 0) return(0);
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if(inc_x == 1 && inc_y == 1) {
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FLOAT_V_T_M8 vx;
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n *= 2; // convert to words
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for(size_t vl; n > 0; n -= vl, x += vl, y += vl) {
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vl = VSETVL_M8(n);
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vx = VLEV_FLOAT_M8(x, vl);
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VSEV_FLOAT_M8(y, vx, vl);
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}
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}else if (1 == inc_x) {
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FLOAT_VX2_T_M4 vx2;
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BLASLONG stride_y = inc_y * 2 * sizeof(FLOAT);
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for(size_t vl; n > 0; n -= vl, x += vl*2, y += vl*inc_y*2) {
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vl = VSETVL_M4(n);
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vx2 = VLSEG_FLOAT_M4(x, vl);
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VSSSEG_FLOAT_M4(y, stride_y, vx2, vl);
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}
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} else if (1 == inc_y) {
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FLOAT_VX2_T_M4 vx2;
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BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
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for(size_t vl; n > 0; n -= vl, x += vl*inc_x*2, y += vl*2) {
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vl = VSETVL_M4(n);
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vx2 = VLSSEG_FLOAT_M4(x, stride_x, vl);
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VSSEG_FLOAT_M4(y, vx2, vl);
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}
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} else {
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FLOAT_VX2_T_M4 vx2;
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BLASLONG stride_x = inc_x * 2 * sizeof(FLOAT);
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BLASLONG stride_y = inc_y * 2 * sizeof(FLOAT);
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for(size_t vl; n > 0; n -= vl, x += vl*inc_x*2, y += vl*inc_y*2) {
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vl = VSETVL_M4(n);
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vx2 = VLSSEG_FLOAT_M4(x, stride_x, vl);
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VSSSEG_FLOAT_M4(y, stride_y, vx2, vl);
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}
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}
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return(0);
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}
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