test / src /cs16-vsquareabs /scalar.c.in
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// 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.
$assert BATCH_TILE >= 1
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <xnnpack/math.h>
#include <xnnpack/vsquareabs.h>
void xnn_cs16_vsquareabs_ukernel__scalar_x${BATCH_TILE}(
size_t batch,
const int16_t* input,
uint32_t* output)
{
assert(batch != 0);
assert(batch % (sizeof(int16_t) * 2) == 0);
assert(input != NULL);
assert(output != NULL);
$if BATCH_TILE == 1:
do {
const int32_t vr = (int32_t) input[0];
const int32_t vi = (int32_t) input[1];
input += 2;
uint32_t vacc = (uint32_t) (vr * vr);
vacc += (uint32_t) (vi * vi);
*output++ = vacc;
batch -= sizeof(int16_t) * 2;
} while (batch != 0);
$else:
for (; batch >= ${BATCH_TILE * 2} * sizeof(int16_t); batch -= ${BATCH_TILE * 2} * sizeof(int16_t)) {
$for C in range(BATCH_TILE):
const int32_t vr${C} = (int32_t) input[${C * 2}];
const int32_t vi${C} = (int32_t) input[${C * 2 + 1}];
input += ${BATCH_TILE} * 2;
$for C in range(BATCH_TILE):
uint32_t vacc${C} = (uint32_t) (vr${C} * vr${C});
$for C in range(BATCH_TILE):
vacc${C} += (uint32_t) (vi${C} * vi${C});
$for C in range(BATCH_TILE):
output[${C}] = vacc${C};
output += ${BATCH_TILE};
}
$if BATCH_TILE == 2:
if XNN_LIKELY(batch != 0) {
assert(batch == 2 * sizeof(int16_t));
const int32_t vr = (int32_t) input[0];
const int32_t vi = (int32_t) input[1];
uint32_t vacc = (uint32_t) (vr * vr);
vacc += (uint32_t) (vi * vi);
*output = vacc;
}
$else:
if XNN_LIKELY(batch != 0) {
do {
const int32_t vr = (int32_t) input[0];
const int32_t vi = (int32_t) input[1];
input += 2;
uint32_t vacc = (uint32_t) (vr * vr);
vacc += (uint32_t) (vi * vi);
*output++ = vacc;
batch -= sizeof(int16_t) * 2;
} while (batch != 0);
}
}