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crot_msa.c
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/*******************************************************************************
Copyright (c) 2016, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
#include "common.h"
#include "macros_msa.h"
int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y,
FLOAT c, FLOAT s)
{
BLASLONG i, j;
FLOAT *px, *py;
FLOAT tp0, tp1, tp2, tp3, tp4, tp5, tp6, tp7;
FLOAT fx0, fx1, fx2, fx3, fy0, fy1, fy2, fy3;
BLASLONG inc_x2, inc_y2;
v4f32 x0, x1, x2, x3, x4, x5, x6, x7, y0, y1, y2, y3, y4, y5, y6, y7;
v4f32 out0, out1, out2, out3, out4, out5, out6, out7;
v4f32 out8, out9, out10, out11, out12, out13, out14, out15, c0, s0;
if (n <= 0) return (0);
px = x;
py = y;
if ((1 == inc_x) && (1 == inc_y))
{
if ((0 == c) && (0 == s))
{
v4f32 zero = {0.0, 0.0, 0.0, 0.0};
/* process 2 elements */
for (j = (n >> 1); j--;)
{
ST_SP(zero, px);
ST_SP(zero, py);
px += 4;
py += 4;
}
if (n & 1)
{
px[0] = 0;
px[1] = 0;
py[0] = 0;
py[1] = 0;
}
}
else if ((1 == c) && (1 == s))
{
if (n >> 4)
{
BLASLONG pref_offsetx, pref_offsety;
pref_offsetx = (BLASLONG)px & (L1_DATA_LINESIZE - 1);
if (pref_offsetx > 0)
{
pref_offsetx = L1_DATA_LINESIZE - pref_offsetx;
pref_offsetx = pref_offsetx / sizeof(FLOAT);
}
pref_offsety = (BLASLONG)py & (L1_DATA_LINESIZE - 1);
if (pref_offsety > 0)
{
pref_offsety = L1_DATA_LINESIZE - pref_offsety;
pref_offsety = pref_offsety / sizeof(FLOAT);
}
x0 = LD_SP(px); px += 4;
x1 = LD_SP(px); px += 4;
x2 = LD_SP(px); px += 4;
x3 = LD_SP(px); px += 4;
y0 = LD_SP(py); py += 4;
y1 = LD_SP(py); py += 4;
y2 = LD_SP(py); py += 4;
y3 = LD_SP(py); py += 4;
for (j = (n >> 4) - 1; j--;)
{
PREFETCH(px + pref_offsetx + 32);
PREFETCH(px + pref_offsetx + 40);
PREFETCH(px + pref_offsetx + 48);
PREFETCH(px + pref_offsetx + 56);
PREFETCH(py + pref_offsety + 32);
PREFETCH(py + pref_offsety + 40);
PREFETCH(py + pref_offsety + 48);
PREFETCH(py + pref_offsety + 56);
out0 = x0 + y0;
x4 = LD_SP(px); px += 4;
out1 = y0 - x0;
x5 = LD_SP(px); px += 4;
out2 = x1 + y1;
x6 = LD_SP(px); px += 4;
out3 = y1 - x1;
x7 = LD_SP(px); px += 4;
out4 = x2 + y2;
y4 = LD_SP(py); py += 4;
out5 = y2 - x2;
y5 = LD_SP(py); py += 4;
out6 = x3 + y3;
y6 = LD_SP(py); py += 4;
out7 = y3 - x3;
y7 = LD_SP(py); py += 4;
ST_SP(out0, x); x += 4;
out8 = x4 + y4;
ST_SP(out1, y); y += 4;
out9 = y4 - x4;
ST_SP(out2, x); x += 4;
out10 = x5 + y5;
ST_SP(out3, y); y += 4;
out11 = y5 - x5;
ST_SP(out4, x); x += 4;
out12 = x6 + y6;
ST_SP(out5, y); y += 4;
out13 = y6 - x6;
ST_SP(out6, x); x += 4;
out14 = x7 + y7;
ST_SP(out7, y); y += 4;
out15 = y7 - x7;
x0 = LD_SP(px); px += 4;
ST_SP(out8, x); x += 4;
x1 = LD_SP(px); px += 4;
ST_SP(out10, x); x += 4;
x2 = LD_SP(px); px += 4;
ST_SP(out12, x); x += 4;
x3 = LD_SP(px); px += 4;
ST_SP(out14, x); x += 4;
y0 = LD_SP(py); py += 4;
ST_SP(out9, y); y += 4;
y1 = LD_SP(py); py += 4;
ST_SP(out11, y); y += 4;
y2 = LD_SP(py); py += 4;
ST_SP(out13, y); y += 4;
y3 = LD_SP(py); py += 4;
ST_SP(out15, y); y += 4;
}
x4 = LD_SP(px); px += 4;
x5 = LD_SP(px); px += 4;
x6 = LD_SP(px); px += 4;
x7 = LD_SP(px); px += 4;
y4 = LD_SP(py); py += 4;
y5 = LD_SP(py); py += 4;
y6 = LD_SP(py); py += 4;
y7 = LD_SP(py); py += 4;
out0 = x0 + y0;
out1 = y0 - x0;
out2 = x1 + y1;
out3 = y1 - x1;
out4 = x2 + y2;
out5 = y2 - x2;
out6 = x3 + y3;
out7 = y3 - x3;
out8 = x4 + y4;
out9 = y4 - x4;
out10 = x5 + y5;
out11 = y5 - x5;
out12 = x6 + y6;
out13 = y6 - x6;
out14 = x7 + y7;
out15 = y7 - x7;
ST_SP8_INC(out0, out2, out4, out6, out8, out10, out12, out14, x, 4);
ST_SP8_INC(out1, out3, out5, out7, out9, out11, out13, out15, y, 4);
}
if (n & 8)
{
LD_SP4_INC(px, 4, x0, x1, x2, x3);
LD_SP4_INC(py, 4, y0, y1, y2, y3);
out0 = x0 + y0;
out1 = y0 - x0;
out2 = x1 + y1;
out3 = y1 - x1;
out4 = x2 + y2;
out5 = y2 - x2;
out6 = x3 + y3;
out7 = y3 - x3;
ST_SP4_INC(out0, out2, out4, out6, x, 4);
ST_SP4_INC(out1, out3, out5, out7, y, 4);
}
if (n & 4)
{
LD_SP2_INC(px, 4, x0, x1);
LD_SP2_INC(py, 4, y0, y1);
out0 = x0 + y0;
out1 = y0 - x0;
out2 = x1 + y1;
out3 = y1 - x1;
ST_SP2_INC(out0, out2, x, 4);
ST_SP2_INC(out1, out3, y, 4);
}
if (n & 2)
{
x0 = LD_SP(px);
y0 = LD_SP(py);
px += 4;
py += 4;
out0 = x0 + y0;
out1 = y0 - x0;
ST_SP(out0, x);
ST_SP(out1, y);
x += 4;
y += 4;
}
if (n & 1)
{
LD_GP2_INC(px, 1, fx0, fx1);
LD_GP2_INC(py, 1, fy0, fy1);
tp0 = fx0 + fy0;
tp1 = fy0 - fx0;
tp2 = fx1 + fy1;
tp3 = fy1 - fx1;
ST_GP2_INC(tp0, tp2, x, 1);
ST_GP2_INC(tp1, tp3, y, 1);
}
}
else if (0 == s)
{
c0 = COPY_FLOAT_TO_VECTOR(c);
if (n >> 4)
{
BLASLONG pref_offsetx, pref_offsety;
pref_offsetx = (BLASLONG)px & (L1_DATA_LINESIZE - 1);
if (pref_offsetx > 0)
{
pref_offsetx = L1_DATA_LINESIZE - pref_offsetx;
pref_offsetx = pref_offsetx / sizeof(FLOAT);
}
pref_offsety = (BLASLONG)py & (L1_DATA_LINESIZE - 1);
if (pref_offsety > 0)
{
pref_offsety = L1_DATA_LINESIZE - pref_offsety;
pref_offsety = pref_offsety / sizeof(FLOAT);
}
LD_SP8_INC(px, 4, x0, x1, x2, x3, x4, x5, x6, x7);
for (j = (n >> 4) - 1; j--;)
{
PREFETCH(px + pref_offsetx + 32);
PREFETCH(px + pref_offsetx + 40);
PREFETCH(px + pref_offsetx + 48);
PREFETCH(px + pref_offsetx + 56);
PREFETCH(py + pref_offsety + 32);
PREFETCH(py + pref_offsety + 40);
PREFETCH(py + pref_offsety + 48);
PREFETCH(py + pref_offsety + 56);
y0 = LD_SP(py); py += 4;
x0 *= c0;
y1 = LD_SP(py); py += 4;
x1 *= c0;
y2 = LD_SP(py); py += 4;
x2 *= c0;
y3 = LD_SP(py); py += 4;
x3 *= c0;
y4 = LD_SP(py); py += 4;
x4 *= c0;
y5 = LD_SP(py); py += 4;
x5 *= c0;
y6 = LD_SP(py); py += 4;
x6 *= c0;
y7 = LD_SP(py); py += 4;
x7 *= c0;
ST_SP(x0, x); x += 4;
y0 *= c0;
ST_SP(x1, x); x += 4;
y1 *= c0;
ST_SP(x2, x); x += 4;
y2 *= c0;
ST_SP(x3, x); x += 4;
y3 *= c0;
ST_SP(x4, x); x += 4;
y4 *= c0;
ST_SP(x5, x); x += 4;
y5 *= c0;
ST_SP(x6, x); x += 4;
y6 *= c0;
ST_SP(x7, x); x += 4;
y7 *= c0;
x0 = LD_SP(px); px += 4;
ST_SP(y0, y); y += 4;
x1 = LD_SP(px); px += 4;
ST_SP(y1, y); y += 4;
x2 = LD_SP(px); px += 4;
ST_SP(y2, y); y += 4;
x3 = LD_SP(px); px += 4;
ST_SP(y3, y); y += 4;
x4 = LD_SP(px); px += 4;
ST_SP(y4, y); y += 4;
x5 = LD_SP(px); px += 4;
ST_SP(y5, y); y += 4;
x6 = LD_SP(px); px += 4;
ST_SP(y6, y); y += 4;
x7 = LD_SP(px); px += 4;
ST_SP(y7, y); y += 4;
}
LD_SP8_INC(py, 4, y0, y1, y2, y3, y4, y5, y6, y7);
x0 *= c0;
y0 *= c0;
x1 *= c0;
y1 *= c0;
x2 *= c0;
y2 *= c0;
x3 *= c0;
y3 *= c0;
x4 *= c0;
y4 *= c0;
x5 *= c0;
y5 *= c0;
x6 *= c0;
y6 *= c0;
x7 *= c0;
y7 *= c0;
ST_SP8_INC(x0, x1, x2, x3, x4, x5, x6, x7, x, 4);
ST_SP8_INC(y0, y1, y2, y3, y4, y5, y6, y7, y, 4);
}
if (n & 8)
{
LD_SP4_INC(px, 4, x0, x1, x2, x3);
LD_SP4_INC(py, 4, y0, y1, y2, y3);
x0 *= c0;
y0 *= c0;
x1 *= c0;
y1 *= c0;
x2 *= c0;
y2 *= c0;
x3 *= c0;
y3 *= c0;
ST_SP4_INC(x0, x1, x2, x3, x, 4);
ST_SP4_INC(y0, y1, y2, y3, y, 4);
}
if (n & 4)
{
LD_SP2_INC(px, 4, x0, x1);
LD_SP2_INC(py, 4, y0, y1);
x0 *= c0;
y0 *= c0;
x1 *= c0;
y1 *= c0;
ST_SP2_INC(x0, x1, x, 4);
ST_SP2_INC(y0, y1, y, 4);
}
if (n & 2)
{
x0 = LD_SP(px);
y0 = LD_SP(py);
px += 4;
py += 4;
x0 *= c0;
y0 *= c0;
ST_SP(x0, x);
ST_SP(y0, y);
x += 4;
y += 4;
}
if (n & 1)
{
LD_GP2_INC(px, 1, fx0, fx1);
LD_GP2_INC(py, 1, fy0, fy1);
tp0 = (c * fx0);
tp1 = (c * fy0);
tp2 = (c * fx1);
tp3 = (c * fy1);
ST_GP2_INC(tp0, tp2, x, 1);
ST_GP2_INC(tp1, tp3, y, 1);
}
}
else if (0 == c)
{
s0 = COPY_FLOAT_TO_VECTOR(s);
/* process 16 floats */
if (n >> 4)
{
BLASLONG pref_offsetx, pref_offsety;
pref_offsetx = (BLASLONG)px & (L1_DATA_LINESIZE - 1);
if (pref_offsetx > 0)
{
pref_offsetx = L1_DATA_LINESIZE - pref_offsetx;
pref_offsetx = pref_offsetx / sizeof(FLOAT);
}
pref_offsety = (BLASLONG)py & (L1_DATA_LINESIZE - 1);
if (pref_offsety > 0)
{
pref_offsety = L1_DATA_LINESIZE - pref_offsety;
pref_offsety = pref_offsety / sizeof(FLOAT);
}
LD_SP4_INC(px, 4, x0, x1, x2, x3);
LD_SP4_INC(py, 4, y0, y1, y2, y3);
for (j = (n >> 4) - 1; j--;)
{
PREFETCH(px + pref_offsetx + 32);
PREFETCH(px + pref_offsetx + 40);
PREFETCH(px + pref_offsetx + 48);
PREFETCH(px + pref_offsetx + 56);
PREFETCH(py + pref_offsety + 32);
PREFETCH(py + pref_offsety + 40);
PREFETCH(py + pref_offsety + 48);
PREFETCH(py + pref_offsety + 56);
x4 = LD_SP(px); px += 4;
out0 = s0 * y0;
x5 = LD_SP(px); px += 4;
out2 = s0 * y1;
x6 = LD_SP(px); px += 4;
out4 = s0 * y2;
x7 = LD_SP(px); px += 4;
out6 = s0 * y3;
y4 = LD_SP(py); py += 4;
out1 = -(s0 * x0);
y5 = LD_SP(py); py += 4;
out3 = -(s0 * x1);
y6 = LD_SP(py); py += 4;
out5 = -(s0 * x2);
y7 = LD_SP(py); py += 4;
out7 = -(s0 * x3);
ST_SP(out0, x); x += 4;
out0 = s0 * y4;
ST_SP(out2, x); x += 4;
out2 = s0 * y5;
ST_SP(out4, x); x += 4;
out4 = s0 * y6;
ST_SP(out6, x); x += 4;
out6 = s0 * y7;
ST_SP(out1, y); y += 4;
out1 = -(s0 * x4);
ST_SP(out3, y); y += 4;
out3 = -(s0 * x5);
ST_SP(out5, y); y += 4;
out5 = -(s0 * x6);
ST_SP(out7, y); y += 4;
out7 = -(s0 * x7);
x0 = LD_SP(px); px += 4;
ST_SP(out0, x); x += 4;
x1 = LD_SP(px); px += 4;
ST_SP(out2, x); x += 4;
x2 = LD_SP(px); px += 4;
ST_SP(out4, x); x += 4;
x3 = LD_SP(px); px += 4;
ST_SP(out6, x); x += 4;
y0 = LD_SP(py); py += 4;
ST_SP(out1, y); y += 4;
y1 = LD_SP(py); py += 4;
ST_SP(out3, y); y += 4;
y2 = LD_SP(py); py += 4;
ST_SP(out5, y); y += 4;
y3 = LD_SP(py); py += 4;
ST_SP(out7, y); y += 4;
}
out0 = s0 * y0;
out2 = s0 * y1;
out4 = s0 * y2;
out6 = s0 * y3;
out1 = -(s0 * x0);
out3 = -(s0 * x1);
out5 = -(s0 * x2);
out7 = -(s0 * x3);
ST_SP4_INC(out0, out2, out4, out6, x, 4);
ST_SP4_INC(out1, out3, out5, out7, y, 4);
LD_SP4_INC(px, 4, x4, x5, x6, x7);
LD_SP4_INC(py, 4, y4, y5, y6, y7);
out0 = s0 * y4;
out2 = s0 * y5;
out4 = s0 * y6;
out6 = s0 * y7;
out1 = -(s0 * x4);
out3 = -(s0 * x5);
out5 = -(s0 * x6);
out7 = -(s0 * x7);
ST_SP4_INC(out0, out2, out4, out6, x, 4);
ST_SP4_INC(out1, out3, out5, out7, y, 4);
}
if (n & 8)
{
LD_SP4_INC(px, 4, x0, x1, x2, x3);
LD_SP4_INC(py, 4, y0, y1, y2, y3);
out0 = s0 * y0;
out1 = - (s0 * x0);
out2 = s0 * y1;
out3 = - (s0 * x1);
out4 = s0 * y2;
out5 = - (s0 * x2);
out6 = s0 * y3;
out7 = - (s0 * x3);
ST_SP4_INC(out0, out2, out4, out6, x, 4);
ST_SP4_INC(out1, out3, out5, out7, y, 4);
}
if (n & 4)
{
LD_SP2_INC(px, 4, x0, x1);
LD_SP2_INC(py, 4, y0, y1);
out0 = s0 * y0;
out1 = - (s0 * x0);
out2 = s0 * y1;
out3 = - (s0 * x1);
ST_SP2_INC(out0, out2, x, 4);
ST_SP2_INC(out1, out3, y, 4);
}
if (n & 2)
{
x0 = LD_SP(px); px += 4;
y0 = LD_SP(py); py += 4;
out0 = s0 * y0;
out1 = - (s0 * x0);
ST_SP(out0, x); x += 4;
ST_SP(out1, y); y += 4;
}
if (n & 1)
{
LD_GP2_INC(px, 1, fx0, fx1);
LD_GP2_INC(py, 1, fy0, fy1);
tp0 = s * fy0;
tp1 = - (s * fx0);
tp2 = s * fy1;
tp3 = - (s * fx1);
ST_GP2_INC(tp0, tp2, x, 1);
ST_GP2_INC(tp1, tp3, y, 1);
}
}
else
{
c0 = COPY_FLOAT_TO_VECTOR(c);
s0 = COPY_FLOAT_TO_VECTOR(s);
if (n >> 4)
{
BLASLONG pref_offsetx, pref_offsety;
pref_offsetx = (BLASLONG)px & (L1_DATA_LINESIZE - 1);
if (pref_offsetx > 0)
{
pref_offsetx = L1_DATA_LINESIZE - pref_offsetx;
pref_offsetx = pref_offsetx / sizeof(FLOAT);
}
pref_offsety = (BLASLONG)py & (L1_DATA_LINESIZE - 1);
if (pref_offsety > 0)
{
pref_offsety = L1_DATA_LINESIZE - pref_offsety;
pref_offsety = pref_offsety / sizeof(FLOAT);
}
LD_SP4_INC(px, 4, x0, x1, x2, x3);
LD_SP4_INC(py, 4, y0, y1, y2, y3);
for (j = (n >> 4) - 1; j--;)
{
PREFETCH(px + pref_offsetx + 32);
PREFETCH(px + pref_offsetx + 40);
PREFETCH(px + pref_offsetx + 48);
PREFETCH(px + pref_offsetx + 56);
PREFETCH(py + pref_offsety + 32);
PREFETCH(py + pref_offsety + 40);
PREFETCH(py + pref_offsety + 48);
PREFETCH(py + pref_offsety + 56);
x4 = LD_SP(px); px += 4;
out0 = c0 * x0;
x5 = LD_SP(px); px += 4;
out1 = c0 * y0;
x6 = LD_SP(px); px += 4;
out2 = c0 * x1;
x7 = LD_SP(px); px += 4;
out3 = c0 * y1;
y4 = LD_SP(py); py += 4;
out4 = c0 * x2;
y5 = LD_SP(py); py += 4;
out5 = c0 * y2;
y6 = LD_SP(py); py += 4;
out6 = c0 * x3;
y7 = LD_SP(py); py += 4;
out7 = c0 * y3;
out0 += s0 * y0;
out1 -= s0 * x0;
out2 += s0 * y1;
out3 -= s0 * x1;
out4 += s0 * y2;
out5 -= s0 * x2;
out6 += s0 * y3;
out7 -= s0 * x3;
ST_SP(out0, x); x += 4;
out8 = c0 * x4;
ST_SP(out2, x); x += 4;
out9 = c0 * y4;
ST_SP(out4, x); x += 4;
out10 = c0 * x5;
ST_SP(out6, x); x += 4;
out11 = c0 * y5;
ST_SP(out1, y); y += 4;
out12 = c0 * x6;
ST_SP(out3, y); y += 4;
out13 = c0 * y6;
ST_SP(out5, y); y += 4;
out14 = c0 * x7;
ST_SP(out7, y); y += 4;
out15 = c0 * y7;
x0 = LD_SP(px); px += 4;
out8 += s0 * y4;
x1 = LD_SP(px); px += 4;
out9 -= s0 * x4;
x2 = LD_SP(px); px += 4;
out10 += s0 * y5;
x3 = LD_SP(px); px += 4;
out11 -= s0 * x5;
y0 = LD_SP(py); py += 4;
out12 += s0 * y6;
y1 = LD_SP(py); py += 4;
out13 -= s0 * x6;
y2 = LD_SP(py); py += 4;
out14 += s0 * y7;
y3 = LD_SP(py); py += 4;
out15 -= s0 * x7;
ST_SP(out8, x); x += 4;
ST_SP(out10, x); x += 4;
ST_SP(out12, x); x += 4;
ST_SP(out14, x); x += 4;
ST_SP(out9, y); y += 4;
ST_SP(out11, y); y += 4;
ST_SP(out13, y); y += 4;
ST_SP(out15, y); y += 4;
}
out0 = c0 * x0;
out0 += s0 * y0;
out1 = c0 * y0;
out1 -= s0 * x0;
out2 = c0 * x1;
out2 += s0 * y1;
out3 = c0 * y1;
out3 -= s0 * x1;
out4 = c0 * x2;
out4 += s0 * y2;
out5 = c0 * y2;
out5 -= s0 * x2;
out6 = c0 * x3;
out6 += s0 * y3;
out7 = c0 * y3;
out7 -= s0 * x3;
ST_SP4_INC(out0, out2, out4, out6, x, 4);
ST_SP4_INC(out1, out3, out5, out7, y, 4);
LD_SP4_INC(px, 4, x4, x5, x6, x7);
LD_SP4_INC(py, 4, y4, y5, y6, y7);
out8 = c0 * x4;
out8 += s0 * y4;
out9 = c0 * y4;
out9 -= s0 * x4;
out10 = c0 * x5;
out10 += s0 * y5;
out11 = c0 * y5;
out11 -= s0 * x5;
out12 = c0 * x6;
out12 += s0 * y6;
out13 = c0 * y6;
out13 -= s0 * x6;
out14 = c0 * x7;
out14 += s0 * y7;
out15 = c0 * y7;
out15 -= s0 * x7;
ST_SP4_INC(out8, out10, out12, out14, x, 4);
ST_SP4_INC(out9, out11, out13, out15, y, 4);
}
if (n & 8)
{
LD_SP4_INC(px, 4, x0, x1, x2, x3);
LD_SP4_INC(py, 4, y0, y1, y2, y3);
out0 = (c0 * x0) + (s0 * y0);
out1 = (c0 * y0) - (s0 * x0);
out2 = (c0 * x1) + (s0 * y1);
out3 = (c0 * y1) - (s0 * x1);
out4 = (c0 * x2) + (s0 * y2);
out5 = (c0 * y2) - (s0 * x2);
out6 = (c0 * x3) + (s0 * y3);
out7 = (c0 * y3) - (s0 * x3);
ST_SP4_INC(out0, out2, out4, out6, x, 4);
ST_SP4_INC(out1, out3, out5, out7, y, 4);
}
if (n & 4)
{
LD_SP2_INC(px, 4, x0, x1);
LD_SP2_INC(py, 4, y0, y1);
out0 = (c0 * x0) + (s0 * y0);
out1 = (c0 * y0) - (s0 * x0);
out2 = (c0 * x1) + (s0 * y1);
out3 = (c0 * y1) - (s0 * x1);
ST_SP2_INC(out0, out2, x, 4);
ST_SP2_INC(out1, out3, y, 4);
}
if (n & 2)
{
x0 = LD_SP(px);
y0 = LD_SP(py);
px += 4;
py += 4;
out0 = (c0 * x0) + (s0 * y0);
out1 = (c0 * y0) - (s0 * x0);
ST_SP(out0, x);
ST_SP(out1, y);
x += 4;
y += 4;
}
if (n & 1)
{
LD_GP2_INC(px, 1, fx0, fx1);
LD_GP2_INC(py, 1, fy0, fy1);
tp0 = (c * fx0) + (s * fy0);
tp1 = (c * fy0) - (s * fx0);
tp2 = (c * fx1) + (s * fy1);
tp3 = (c * fy1) - (s * fx1);
ST_GP2_INC(tp0, tp2, x, 1);
ST_GP2_INC(tp1, tp3, y, 1);
}
}
}
else
{
inc_x2 = 2 * inc_x;
inc_y2 = 2 * inc_y;
if ((0 == c) && (0 == s))
{
for (i = n; i--;)
{
*x = 0;
*(x + 1) = 0;
*y = 0;
*(y + 1) = 0;
x += inc_x2;
y += inc_y2;
}
}
else if ((1 == c) && (1 == s))
{
if (n >> 1)
{
fx0 = *px;
fx1 = *(px+1); px += inc_x2;
fx2 = *px;
fx3 = *(px+1); px += inc_x2;
fy0 = *py;
fy1 = *(py+1); py += inc_y2;
fy2 = *py;
fy3 = *(py+1); py += inc_y2;
for (i = (n >> 1) - 1; i--;)
{
tp0 = fx0 + fy0;
tp1 = fx1 + fy1;
tp2 = fy0 - fx0;
tp3 = fy1 - fx1;
tp4 = fx2 + fy2;
tp5 = fx3 + fy3;
tp6 = fy2 - fx2;
tp7 = fy3 - fx3;
fx0 = *px;
*x = tp0;
fx1 = *(px+1); px += inc_x2;
*(x+1) = tp1; x += inc_x2;
fx2 = *px;
*x = tp4;
fx3 = *(px+1); px += inc_x2;
*(x+1) = tp5; x += inc_x2;
fy0 = *py;
*y = tp2;
fy1 = *(py+1); py += inc_y2;
*(y+1) = tp3; y += inc_y2;
fy2 = *py;
*y = tp6;
fy3 = *(py+1); py += inc_y2;
*(y+1) = tp7; y += inc_y2;
}
tp0 = fx0 + fy0;
tp1 = fx1 + fy1;
tp2 = fy0 - fx0;
tp3 = fy1 - fx1;
tp4 = fx2 + fy2;
tp5 = fx3 + fy3;
tp6 = fy2 - fx2;
tp7 = fy3 - fx3;
*x = tp0;
*(x+1) = tp1; x += inc_x2;
*x = tp4;
*(x+1) = tp5; x += inc_x2;
*y = tp2;
*(y+1) = tp3; y += inc_y2;
*y = tp6;
*(y+1) = tp7; y += inc_y2;
}
if (n & 1)
{
fx0 = *px;
fx1 = *(px+1);
fy0 = *py;
fy1 = *(py+1);
tp0 = fx0 + fy0;
tp1 = fx1 + fy1;
tp2 = fy0 - fx0;
tp3 = fy1 - fx1;
*x = tp0;
*(x+1) = tp1;
*y = tp2;
*(y+1) = tp3;
}
}
else if (0 == s)
{
if (n >> 1)
{
fx0 = *px;
fx1 = *(px+1); px += inc_x2;
fx2 = *px;
fx3 = *(px+1); px += inc_x2;
fy0 = *py;
fy1 = *(py+1); py += inc_y2;
fy2 = *py;
fy3 = *(py+1); py += inc_y2;
for (i = (n >> 1) - 1; i--;)
{
tp0 = c * fx0;
tp1 = c * fx1;
tp2 = c * fx2;
tp3 = c * fx3;
tp4 = c * fy0;
tp5 = c * fy1;
tp6 = c * fy2;
tp7 = c * fy3;
fx0 = *px;
*x = tp0;
fx1 = *(px+1); px += inc_x2;
*(x+1) = tp1; x += inc_x2;
fx2 = *px;
*x = tp2;
fx3 = *(px+1); px += inc_x2;
*(x+1) = tp3; x += inc_x2;
fy0 = *py;
*y = tp4;
fy1 = *(py+1); py += inc_y2;
*(y+1) = tp5; y += inc_y2;
fy2 = *py;
*y = tp6;
fy3 = *(py+1); py += inc_y2;
*(y+1) = tp7; y += inc_y2;
}
tp0 = c * fx0;
tp1 = c * fx1;
tp2 = c * fx2;
tp3 = c * fx3;
tp4 = c * fy0;
tp5 = c * fy1;
tp6 = c * fy2;
tp7 = c * fy3;
*x = tp0;
*(x+1) = tp1; x += inc_x2;
*x = tp2;
*(x+1) = tp3; x += inc_x2;
*y = tp4;
*(y+1) = tp5; y += inc_y2;
*y = tp6;
*(y+1) = tp7; y += inc_y2;
}
if (n & 1)
{
fx0 = *px;
fx1 = *(px+1);
fy0 = *py;
fy1 = *(py+1);
tp0 = c * fx0;
tp1 = c * fx1;
tp2 = c * fy0;
tp3 = c * fy1;
*x = tp0;
*(x+1) = tp1;
*y = tp2;
*(y+1) = tp3;
}
}
else
{
if (n >> 1)
{
fx0 = *px;
fx1 = *(px+1); px += inc_x2;
fx2 = *px;
fx3 = *(px+1); px += inc_x2;
fy0 = *py;
fy1 = *(py+1); py += inc_y2;
fy2 = *py;
fy3 = *(py+1); py += inc_y2;
for (i = (n >> 1) - 1; i--;)
{
tp0 = c * fx0 + s * fy0;