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// Auto-generated file. Do not edit!
// Template: src/f16-f32-vcvt/neon-int32.c.in
// Generator: tools/xngen
//
// Copyright 2021 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 <arm_neon.h>
#include <xnnpack/common.h>
#include <xnnpack/vcvt.h>
void xnn_f16_f32_vcvt_ukernel__neon_int32_x8(
size_t batch,
const void* input,
float* output,
const union xnn_f16_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
{
assert(batch != 0);
assert(batch % sizeof(uint16_t) == 0);
assert(input != NULL);
assert(output != NULL);
const uint32x4_t vsign_mask = vmovq_n_u32(0x80000000);
const uint32x4_t vexp_offset = vmovq_n_u32(0x70000000);
const float32x4_t vexp_scale = vld1q_dup_f32(¶ms->neon.exp_scale);
const uint32x4_t vmagic_bias = vmovq_n_u32(0x3F000000);
const uint32x4_t vdenorm_cutoff = vmovq_n_u32(0x04000000);
const uint16_t* i = (const uint16_t*) input;
for (; batch >= 8 * sizeof(uint16_t); batch -= 8 * sizeof(uint16_t)) {
const uint16x8_t vh = vld1q_u16(i); i += 8;
const uint32x4_t vw_lo = vshll_n_u16(vget_low_u16(vh), 16);
const uint32x4_t vw_hi = vshll_n_u16(vget_high_u16(vh), 16);
const uint32x4_t vsign_lo = vandq_u32(vw_lo, vsign_mask);
const uint32x4_t vsign_hi = vandq_u32(vw_hi, vsign_mask);
const uint32x4_t vnonsign_lo = veorq_u32(vw_lo, vsign_lo);
const uint32x4_t vnonsign_hi = veorq_u32(vw_hi, vsign_hi);
const float32x4_t vnorm_lo = vmulq_f32(vreinterpretq_f32_u32(vsraq_n_u32(vexp_offset, vnonsign_lo, 3)), vexp_scale);
const float32x4_t vnorm_hi = vmulq_f32(vreinterpretq_f32_u32(vsraq_n_u32(vexp_offset, vnonsign_hi, 3)), vexp_scale);
const float32x4_t vdenorm_lo = vsubq_f32(vreinterpretq_f32_u32(vsriq_n_u32(vmagic_bias, vnonsign_lo, 16)), vreinterpretq_f32_u32(vmagic_bias));
const float32x4_t vdenorm_hi = vsubq_f32(vreinterpretq_f32_u32(vsriq_n_u32(vmagic_bias, vnonsign_hi, 16)), vreinterpretq_f32_u32(vmagic_bias));
const uint32x4_t vxmask_lo = vcgtq_u32(vnonsign_lo, vdenorm_cutoff);
const uint32x4_t vf_lo = vorrq_u32(vsign_lo, vreinterpretq_u32_f32(vbslq_f32(vxmask_lo, vnorm_lo, vdenorm_lo)));
const uint32x4_t vxmask_hi = vcgtq_u32(vnonsign_hi, vdenorm_cutoff);
const uint32x4_t vf_hi = vorrq_u32(vsign_hi, vreinterpretq_u32_f32(vbslq_f32(vxmask_hi, vnorm_hi, vdenorm_hi)));
vst1q_f32(output, vreinterpretq_f32_u32(vf_lo)); output += 4;
vst1q_f32(output, vreinterpretq_f32_u32(vf_hi)); output += 4;
}
if XNN_UNPREDICTABLE(batch != 0) {
const uint16x8_t vh = vld1q_u16(i); i += 8;
const uint32x4_t vw_lo = vshll_n_u16(vget_low_u16(vh), 16);
const uint32x4_t vw_hi = vshll_n_u16(vget_high_u16(vh), 16);
const uint32x4_t vsign_lo = vandq_u32(vw_lo, vsign_mask);
const uint32x4_t vsign_hi = vandq_u32(vw_hi, vsign_mask);
const uint32x4_t vnonsign_lo = veorq_u32(vw_lo, vsign_lo);
const uint32x4_t vnonsign_hi = veorq_u32(vw_hi, vsign_hi);
const float32x4_t vnorm_lo = vmulq_f32(vreinterpretq_f32_u32(vsraq_n_u32(vexp_offset, vnonsign_lo, 3)), vexp_scale);
const float32x4_t vnorm_hi = vmulq_f32(vreinterpretq_f32_u32(vsraq_n_u32(vexp_offset, vnonsign_hi, 3)), vexp_scale);
const float32x4_t vdenorm_lo = vsubq_f32(vreinterpretq_f32_u32(vsriq_n_u32(vmagic_bias, vnonsign_lo, 16)), vreinterpretq_f32_u32(vmagic_bias));
const float32x4_t vdenorm_hi = vsubq_f32(vreinterpretq_f32_u32(vsriq_n_u32(vmagic_bias, vnonsign_hi, 16)), vreinterpretq_f32_u32(vmagic_bias));
const uint32x4_t vxmask_lo = vcgtq_u32(vnonsign_lo, vdenorm_cutoff);
uint32x4_t vf = vorrq_u32(vsign_lo, vreinterpretq_u32_f32(vbslq_f32(vxmask_lo, vnorm_lo, vdenorm_lo)));
if (batch & (4 * sizeof(uint16_t))) {
vst1q_f32(output, vreinterpretq_f32_u32(vf)); output += 4;
const uint32x4_t vxmask_hi = vcgtq_u32(vnonsign_hi, vdenorm_cutoff);
vf = vorrq_u32(vsign_hi, vreinterpretq_u32_f32(vbslq_f32(vxmask_hi, vnorm_hi, vdenorm_hi)));
}
uint32x2_t vf_lo = vget_low_u32(vf);
if (batch & (2 * sizeof(uint16_t))) {
vst1_f32(output, vreinterpret_f32_u32(vf_lo)); output += 2;
vf_lo = vget_high_u32(vf);
}
if (batch & (1 * sizeof(uint16_t))) {
vst1_lane_f32(output, vreinterpret_f32_u32(vf_lo), 0);
}
}
}
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