test / src /cs16-bfly4 /gen /cs16-bfly4-scalar-x4.c
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// Auto-generated file. Do not edit!
// Template: src/cs16-bfly4/scalar.c.in
// Generator: tools/xngen
//
// Copyright 2022 Google LLC
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <xnnpack/math.h>
#include <xnnpack/fft.h>
void xnn_cs16_bfly4_ukernel__scalar_x4(
size_t batch,
size_t samples,
int16_t* data,
const int16_t* twiddle,
size_t stride)
{
assert(batch != 0);
assert(samples != 0);
assert(samples % (sizeof(int16_t) * 2) == 0);
assert(data != NULL);
assert(stride != 0);
assert(twiddle != NULL);
int16_t* data3 = data;
do {
int16_t* data0 = data3;
int16_t* data1 = (int16_t*) ((uintptr_t) data0 + samples);
int16_t* data2 = (int16_t*) ((uintptr_t) data1 + samples);
data3 = (int16_t*) ((uintptr_t) data2 + samples);
const int16_t* tw1 = twiddle;
const int16_t* tw2 = twiddle;
const int16_t* tw3 = twiddle;
tw1 = (const int16_t*) ((uintptr_t) tw1 + stride);
tw2 = (const int16_t*) ((uintptr_t) tw2 + stride * 2);
tw3 = (const int16_t*) ((uintptr_t) tw3 + stride * 3);
size_t s = samples - sizeof(int16_t) * 2;
// First sample skips twiddle.
// Same code as samples=1 but supports stride
{
int32_t vout0r = (int32_t) data0[0];
int32_t vout0i = (int32_t) data0[1];
int32_t vout1r = (int32_t) data1[0];
int32_t vout1i = (int32_t) data1[1];
int32_t vout2r = (int32_t) data2[0];
int32_t vout2i = (int32_t) data2[1];
int32_t vout3r = (int32_t) data3[0];
int32_t vout3i = (int32_t) data3[1];
// Note 32767 / 4 = 8191. Should be 8192.
vout0r = math_asr_s32(vout0r * 8191 + 16384, 15);
vout0i = math_asr_s32(vout0i * 8191 + 16384, 15);
vout1r = math_asr_s32(vout1r * 8191 + 16384, 15);
vout1i = math_asr_s32(vout1i * 8191 + 16384, 15);
vout2r = math_asr_s32(vout2r * 8191 + 16384, 15);
vout2i = math_asr_s32(vout2i * 8191 + 16384, 15);
vout3r = math_asr_s32(vout3r * 8191 + 16384, 15);
vout3i = math_asr_s32(vout3i * 8191 + 16384, 15);
const int32_t vtmp5r = vout0r - vout2r;
const int32_t vtmp5i = vout0i - vout2i;
vout0r += vout2r;
vout0i += vout2i;
const int32_t vtmp3r = vout1r + vout3r;
const int32_t vtmp3i = vout1i + vout3i;
const int32_t vtmp4r = vout1i - vout3i;
const int32_t vtmp4i = -(vout1r - vout3r); // swap r,i and neg i
vout2r = vout0r - vtmp3r;
vout2i = vout0i - vtmp3i;
vout0r += vtmp3r;
vout0i += vtmp3i;
vout1r = vtmp5r + vtmp4r;
vout1i = vtmp5i + vtmp4i;
vout3r = vtmp5r - vtmp4r;
vout3i = vtmp5i - vtmp4i;
data0[0] = (int16_t) vout0r;
data0[1] = (int16_t) vout0i;
data1[0] = (int16_t) vout1r;
data1[1] = (int16_t) vout1i;
data2[0] = (int16_t) vout2r;
data2[1] = (int16_t) vout2i;
data3[0] = (int16_t) vout3r;
data3[1] = (int16_t) vout3i;
data0 += 2;
data1 += 2;
data2 += 2;
data3 += 2;
}
for (; s >= 4 * sizeof(int16_t) * 2; s -= 4 * sizeof(int16_t) * 2) {
int32_t vout0r0 = (int32_t) data0[0];
int32_t vout0i0 = (int32_t) data0[1];
int32_t vout0r1 = (int32_t) data0[2];
int32_t vout0i1 = (int32_t) data0[3];
int32_t vout0r2 = (int32_t) data0[4];
int32_t vout0i2 = (int32_t) data0[5];
int32_t vout0r3 = (int32_t) data0[6];
int32_t vout0i3 = (int32_t) data0[7];
int32_t vout1r0 = (int32_t) data1[0];
int32_t vout1i0 = (int32_t) data1[1];
int32_t vout1r1 = (int32_t) data1[2];
int32_t vout1i1 = (int32_t) data1[3];
int32_t vout1r2 = (int32_t) data1[4];
int32_t vout1i2 = (int32_t) data1[5];
int32_t vout1r3 = (int32_t) data1[6];
int32_t vout1i3 = (int32_t) data1[7];
int32_t vout2r0 = (int32_t) data2[0];
int32_t vout2i0 = (int32_t) data2[1];
int32_t vout2r1 = (int32_t) data2[2];
int32_t vout2i1 = (int32_t) data2[3];
int32_t vout2r2 = (int32_t) data2[4];
int32_t vout2i2 = (int32_t) data2[5];
int32_t vout2r3 = (int32_t) data2[6];
int32_t vout2i3 = (int32_t) data2[7];
int32_t vout3r0 = (int32_t) data3[0];
int32_t vout3i0 = (int32_t) data3[1];
int32_t vout3r1 = (int32_t) data3[2];
int32_t vout3i1 = (int32_t) data3[3];
int32_t vout3r2 = (int32_t) data3[4];
int32_t vout3i2 = (int32_t) data3[5];
int32_t vout3r3 = (int32_t) data3[6];
int32_t vout3i3 = (int32_t) data3[7];
const int32_t vtw1r0 = (const int32_t) tw1[0];
const int32_t vtw1i0 = (const int32_t) tw1[1];
tw1 = (const int16_t*) ((uintptr_t) tw1 + stride);
const int32_t vtw1r1 = (const int32_t) tw1[0];
const int32_t vtw1i1 = (const int32_t) tw1[1];
tw1 = (const int16_t*) ((uintptr_t) tw1 + stride);
const int32_t vtw1r2 = (const int32_t) tw1[0];
const int32_t vtw1i2 = (const int32_t) tw1[1];
tw1 = (const int16_t*) ((uintptr_t) tw1 + stride);
const int32_t vtw1r3 = (const int32_t) tw1[0];
const int32_t vtw1i3 = (const int32_t) tw1[1];
tw1 = (const int16_t*) ((uintptr_t) tw1 + stride);
const int32_t vtw2r0 = (const int32_t) tw2[0];
const int32_t vtw2i0 = (const int32_t) tw2[1];
tw2 = (const int16_t*) ((uintptr_t) tw2 + stride * 2);
const int32_t vtw2r1 = (const int32_t) tw2[0];
const int32_t vtw2i1 = (const int32_t) tw2[1];
tw2 = (const int16_t*) ((uintptr_t) tw2 + stride * 2);
const int32_t vtw2r2 = (const int32_t) tw2[0];
const int32_t vtw2i2 = (const int32_t) tw2[1];
tw2 = (const int16_t*) ((uintptr_t) tw2 + stride * 2);
const int32_t vtw2r3 = (const int32_t) tw2[0];
const int32_t vtw2i3 = (const int32_t) tw2[1];
tw2 = (const int16_t*) ((uintptr_t) tw2 + stride * 2);
const int32_t vtw3r0 = (const int32_t) tw3[0];
const int32_t vtw3i0 = (const int32_t) tw3[1];
tw3 = (const int16_t*) ((uintptr_t) tw3 + stride * 3);
const int32_t vtw3r1 = (const int32_t) tw3[0];
const int32_t vtw3i1 = (const int32_t) tw3[1];
tw3 = (const int16_t*) ((uintptr_t) tw3 + stride * 3);
const int32_t vtw3r2 = (const int32_t) tw3[0];
const int32_t vtw3i2 = (const int32_t) tw3[1];
tw3 = (const int16_t*) ((uintptr_t) tw3 + stride * 3);
const int32_t vtw3r3 = (const int32_t) tw3[0];
const int32_t vtw3i3 = (const int32_t) tw3[1];
tw3 = (const int16_t*) ((uintptr_t) tw3 + stride * 3);
// Note 32767 / 4 = 8191. Should be 8192.
vout0r0 = math_asr_s32(vout0r0 * 8191 + 16384, 15);
vout0i0 = math_asr_s32(vout0i0 * 8191 + 16384, 15);
vout0r1 = math_asr_s32(vout0r1 * 8191 + 16384, 15);
vout0i1 = math_asr_s32(vout0i1 * 8191 + 16384, 15);
vout0r2 = math_asr_s32(vout0r2 * 8191 + 16384, 15);
vout0i2 = math_asr_s32(vout0i2 * 8191 + 16384, 15);
vout0r3 = math_asr_s32(vout0r3 * 8191 + 16384, 15);
vout0i3 = math_asr_s32(vout0i3 * 8191 + 16384, 15);
vout1r0 = math_asr_s32(vout1r0 * 8191 + 16384, 15);
vout1i0 = math_asr_s32(vout1i0 * 8191 + 16384, 15);
vout1r1 = math_asr_s32(vout1r1 * 8191 + 16384, 15);
vout1i1 = math_asr_s32(vout1i1 * 8191 + 16384, 15);
vout1r2 = math_asr_s32(vout1r2 * 8191 + 16384, 15);
vout1i2 = math_asr_s32(vout1i2 * 8191 + 16384, 15);
vout1r3 = math_asr_s32(vout1r3 * 8191 + 16384, 15);
vout1i3 = math_asr_s32(vout1i3 * 8191 + 16384, 15);
vout2r0 = math_asr_s32(vout2r0 * 8191 + 16384, 15);
vout2i0 = math_asr_s32(vout2i0 * 8191 + 16384, 15);
vout2r1 = math_asr_s32(vout2r1 * 8191 + 16384, 15);
vout2i1 = math_asr_s32(vout2i1 * 8191 + 16384, 15);
vout2r2 = math_asr_s32(vout2r2 * 8191 + 16384, 15);
vout2i2 = math_asr_s32(vout2i2 * 8191 + 16384, 15);
vout2r3 = math_asr_s32(vout2r3 * 8191 + 16384, 15);
vout2i3 = math_asr_s32(vout2i3 * 8191 + 16384, 15);
vout3r0 = math_asr_s32(vout3r0 * 8191 + 16384, 15);
vout3i0 = math_asr_s32(vout3i0 * 8191 + 16384, 15);
vout3r1 = math_asr_s32(vout3r1 * 8191 + 16384, 15);
vout3i1 = math_asr_s32(vout3i1 * 8191 + 16384, 15);
vout3r2 = math_asr_s32(vout3r2 * 8191 + 16384, 15);
vout3i2 = math_asr_s32(vout3i2 * 8191 + 16384, 15);
vout3r3 = math_asr_s32(vout3r3 * 8191 + 16384, 15);
vout3i3 = math_asr_s32(vout3i3 * 8191 + 16384, 15);
const int32_t vtmp0r0 = math_asr_s32(vout1r0 * vtw1r0 - vout1i0 * vtw1i0 + 16384, 15);
const int32_t vtmp0i0 = math_asr_s32(vout1r0 * vtw1i0 + vout1i0 * vtw1r0 + 16384, 15);
const int32_t vtmp0r1 = math_asr_s32(vout1r1 * vtw1r1 - vout1i1 * vtw1i1 + 16384, 15);
const int32_t vtmp0i1 = math_asr_s32(vout1r1 * vtw1i1 + vout1i1 * vtw1r1 + 16384, 15);
const int32_t vtmp0r2 = math_asr_s32(vout1r2 * vtw1r2 - vout1i2 * vtw1i2 + 16384, 15);
const int32_t vtmp0i2 = math_asr_s32(vout1r2 * vtw1i2 + vout1i2 * vtw1r2 + 16384, 15);
const int32_t vtmp0r3 = math_asr_s32(vout1r3 * vtw1r3 - vout1i3 * vtw1i3 + 16384, 15);
const int32_t vtmp0i3 = math_asr_s32(vout1r3 * vtw1i3 + vout1i3 * vtw1r3 + 16384, 15);
const int32_t vtmp1r0 = math_asr_s32(vout2r0 * vtw2r0 - vout2i0 * vtw2i0 + 16384, 15);
const int32_t vtmp1i0 = math_asr_s32(vout2r0 * vtw2i0 + vout2i0 * vtw2r0 + 16384, 15);
const int32_t vtmp1r1 = math_asr_s32(vout2r1 * vtw2r1 - vout2i1 * vtw2i1 + 16384, 15);
const int32_t vtmp1i1 = math_asr_s32(vout2r1 * vtw2i1 + vout2i1 * vtw2r1 + 16384, 15);
const int32_t vtmp1r2 = math_asr_s32(vout2r2 * vtw2r2 - vout2i2 * vtw2i2 + 16384, 15);
const int32_t vtmp1i2 = math_asr_s32(vout2r2 * vtw2i2 + vout2i2 * vtw2r2 + 16384, 15);
const int32_t vtmp1r3 = math_asr_s32(vout2r3 * vtw2r3 - vout2i3 * vtw2i3 + 16384, 15);
const int32_t vtmp1i3 = math_asr_s32(vout2r3 * vtw2i3 + vout2i3 * vtw2r3 + 16384, 15);
const int32_t vtmp2r0 = math_asr_s32(vout3r0 * vtw3r0 - vout3i0 * vtw3i0 + 16384, 15);
const int32_t vtmp2i0 = math_asr_s32(vout3r0 * vtw3i0 + vout3i0 * vtw3r0 + 16384, 15);
const int32_t vtmp2r1 = math_asr_s32(vout3r1 * vtw3r1 - vout3i1 * vtw3i1 + 16384, 15);
const int32_t vtmp2i1 = math_asr_s32(vout3r1 * vtw3i1 + vout3i1 * vtw3r1 + 16384, 15);
const int32_t vtmp2r2 = math_asr_s32(vout3r2 * vtw3r2 - vout3i2 * vtw3i2 + 16384, 15);
const int32_t vtmp2i2 = math_asr_s32(vout3r2 * vtw3i2 + vout3i2 * vtw3r2 + 16384, 15);
const int32_t vtmp2r3 = math_asr_s32(vout3r3 * vtw3r3 - vout3i3 * vtw3i3 + 16384, 15);
const int32_t vtmp2i3 = math_asr_s32(vout3r3 * vtw3i3 + vout3i3 * vtw3r3 + 16384, 15);
const int32_t vtmp5r0 = vout0r0 - vtmp1r0;
const int32_t vtmp5i0 = vout0i0 - vtmp1i0;
const int32_t vtmp5r1 = vout0r1 - vtmp1r1;
const int32_t vtmp5i1 = vout0i1 - vtmp1i1;
const int32_t vtmp5r2 = vout0r2 - vtmp1r2;
const int32_t vtmp5i2 = vout0i2 - vtmp1i2;
const int32_t vtmp5r3 = vout0r3 - vtmp1r3;
const int32_t vtmp5i3 = vout0i3 - vtmp1i3;
vout0r0 += vtmp1r0;
vout0i0 += vtmp1i0;
vout0r1 += vtmp1r1;
vout0i1 += vtmp1i1;
vout0r2 += vtmp1r2;
vout0i2 += vtmp1i2;
vout0r3 += vtmp1r3;
vout0i3 += vtmp1i3;
const int32_t vtmp3r0 = vtmp0r0 + vtmp2r0;
const int32_t vtmp3i0 = vtmp0i0 + vtmp2i0;
const int32_t vtmp3r1 = vtmp0r1 + vtmp2r1;
const int32_t vtmp3i1 = vtmp0i1 + vtmp2i1;
const int32_t vtmp3r2 = vtmp0r2 + vtmp2r2;
const int32_t vtmp3i2 = vtmp0i2 + vtmp2i2;
const int32_t vtmp3r3 = vtmp0r3 + vtmp2r3;
const int32_t vtmp3i3 = vtmp0i3 + vtmp2i3;
const int32_t vtmp4r0 = vtmp0i0 - vtmp2i0;
const int32_t vtmp4i0 = -(vtmp0r0 - vtmp2r0); // swap r,i and neg i
const int32_t vtmp4r1 = vtmp0i1 - vtmp2i1;
const int32_t vtmp4i1 = -(vtmp0r1 - vtmp2r1); // swap r,i and neg i
const int32_t vtmp4r2 = vtmp0i2 - vtmp2i2;
const int32_t vtmp4i2 = -(vtmp0r2 - vtmp2r2); // swap r,i and neg i
const int32_t vtmp4r3 = vtmp0i3 - vtmp2i3;
const int32_t vtmp4i3 = -(vtmp0r3 - vtmp2r3); // swap r,i and neg i
vout2r0 = vout0r0 - vtmp3r0;
vout2i0 = vout0i0 - vtmp3i0;
vout2r1 = vout0r1 - vtmp3r1;
vout2i1 = vout0i1 - vtmp3i1;
vout2r2 = vout0r2 - vtmp3r2;
vout2i2 = vout0i2 - vtmp3i2;
vout2r3 = vout0r3 - vtmp3r3;
vout2i3 = vout0i3 - vtmp3i3;
vout0r0 += vtmp3r0;
vout0i0 += vtmp3i0;
vout0r1 += vtmp3r1;
vout0i1 += vtmp3i1;
vout0r2 += vtmp3r2;
vout0i2 += vtmp3i2;
vout0r3 += vtmp3r3;
vout0i3 += vtmp3i3;
vout1r0 = vtmp5r0 + vtmp4r0;
vout1i0 = vtmp5i0 + vtmp4i0;
vout1r1 = vtmp5r1 + vtmp4r1;
vout1i1 = vtmp5i1 + vtmp4i1;
vout1r2 = vtmp5r2 + vtmp4r2;
vout1i2 = vtmp5i2 + vtmp4i2;
vout1r3 = vtmp5r3 + vtmp4r3;
vout1i3 = vtmp5i3 + vtmp4i3;
vout3r0 = vtmp5r0 - vtmp4r0;
vout3i0 = vtmp5i0 - vtmp4i0;
vout3r1 = vtmp5r1 - vtmp4r1;
vout3i1 = vtmp5i1 - vtmp4i1;
vout3r2 = vtmp5r2 - vtmp4r2;
vout3i2 = vtmp5i2 - vtmp4i2;
vout3r3 = vtmp5r3 - vtmp4r3;
vout3i3 = vtmp5i3 - vtmp4i3;
data0[0] = (int16_t) vout0r0;
data0[1] = (int16_t) vout0i0;
data0[2] = (int16_t) vout0r1;
data0[3] = (int16_t) vout0i1;
data0[4] = (int16_t) vout0r2;
data0[5] = (int16_t) vout0i2;
data0[6] = (int16_t) vout0r3;
data0[7] = (int16_t) vout0i3;
data0 += 4 * 2;
data1[0] = (int16_t) vout1r0;
data1[1] = (int16_t) vout1i0;
data1[2] = (int16_t) vout1r1;
data1[3] = (int16_t) vout1i1;
data1[4] = (int16_t) vout1r2;
data1[5] = (int16_t) vout1i2;
data1[6] = (int16_t) vout1r3;
data1[7] = (int16_t) vout1i3;
data1 += 4 * 2;
data2[0] = (int16_t) vout2r0;
data2[1] = (int16_t) vout2i0;
data2[2] = (int16_t) vout2r1;
data2[3] = (int16_t) vout2i1;
data2[4] = (int16_t) vout2r2;
data2[5] = (int16_t) vout2i2;
data2[6] = (int16_t) vout2r3;
data2[7] = (int16_t) vout2i3;
data2 += 4 * 2;
data3[0] = (int16_t) vout3r0;
data3[1] = (int16_t) vout3i0;
data3[2] = (int16_t) vout3r1;
data3[3] = (int16_t) vout3i1;
data3[4] = (int16_t) vout3r2;
data3[5] = (int16_t) vout3i2;
data3[6] = (int16_t) vout3r3;
data3[7] = (int16_t) vout3i3;
data3 += 4 * 2;
}
if XNN_UNLIKELY(s != 0) {
do {
int32_t vout0r = (int32_t) data0[0];
int32_t vout0i = (int32_t) data0[1];
int32_t vout1r = (int32_t) data1[0];
int32_t vout1i = (int32_t) data1[1];
int32_t vout2r = (int32_t) data2[0];
int32_t vout2i = (int32_t) data2[1];
int32_t vout3r = (int32_t) data3[0];
int32_t vout3i = (int32_t) data3[1];
const int32_t vtw1r = (const int32_t) tw1[0];
const int32_t vtw1i = (const int32_t) tw1[1];
const int32_t vtw2r = (const int32_t) tw2[0];
const int32_t vtw2i = (const int32_t) tw2[1];
const int32_t vtw3r = (const int32_t) tw3[0];
const int32_t vtw3i = (const int32_t) tw3[1];
tw1 = (const int16_t*) ((uintptr_t) tw1 + stride);
tw2 = (const int16_t*) ((uintptr_t) tw2 + stride * 2);
tw3 = (const int16_t*) ((uintptr_t) tw3 + stride * 3);
// Note 32767 / 4 = 8191. Should be 8192.
vout0r = math_asr_s32(vout0r * 8191 + 16384, 15);
vout0i = math_asr_s32(vout0i * 8191 + 16384, 15);
vout1r = math_asr_s32(vout1r * 8191 + 16384, 15);
vout1i = math_asr_s32(vout1i * 8191 + 16384, 15);
vout2r = math_asr_s32(vout2r * 8191 + 16384, 15);
vout2i = math_asr_s32(vout2i * 8191 + 16384, 15);
vout3r = math_asr_s32(vout3r * 8191 + 16384, 15);
vout3i = math_asr_s32(vout3i * 8191 + 16384, 15);
const int32_t vtmp0r = math_asr_s32(vout1r * vtw1r - vout1i * vtw1i + 16384, 15);
const int32_t vtmp0i = math_asr_s32(vout1r * vtw1i + vout1i * vtw1r + 16384, 15);
const int32_t vtmp1r = math_asr_s32(vout2r * vtw2r - vout2i * vtw2i + 16384, 15);
const int32_t vtmp1i = math_asr_s32(vout2r * vtw2i + vout2i * vtw2r + 16384, 15);
const int32_t vtmp2r = math_asr_s32(vout3r * vtw3r - vout3i * vtw3i + 16384, 15);
const int32_t vtmp2i = math_asr_s32(vout3r * vtw3i + vout3i * vtw3r + 16384, 15);
const int32_t vtmp5r = vout0r - vtmp1r;
const int32_t vtmp5i = vout0i - vtmp1i;
vout0r += vtmp1r;
vout0i += vtmp1i;
const int32_t vtmp3r = vtmp0r + vtmp2r;
const int32_t vtmp3i = vtmp0i + vtmp2i;
const int32_t vtmp4r = vtmp0i - vtmp2i;
const int32_t vtmp4i = -(vtmp0r - vtmp2r); // swap r,i and neg i
vout2r = vout0r - vtmp3r;
vout2i = vout0i - vtmp3i;
vout0r += vtmp3r;
vout0i += vtmp3i;
vout1r = vtmp5r + vtmp4r;
vout1i = vtmp5i + vtmp4i;
vout3r = vtmp5r - vtmp4r;
vout3i = vtmp5i - vtmp4i;
data0[0] = (int16_t) vout0r;
data0[1] = (int16_t) vout0i;
data1[0] = (int16_t) vout1r;
data1[1] = (int16_t) vout1i;
data2[0] = (int16_t) vout2r;
data2[1] = (int16_t) vout2i;
data3[0] = (int16_t) vout3r;
data3[1] = (int16_t) vout3i;
data0 += 2;
data1 += 2;
data2 += 2;
data3 += 2;
s -= sizeof(int16_t) * 2;
} while (s != 0);
}
} while (--batch != 0);
}