text: // Auto-generated file. Do not edit!
  //   Template: src/f32-vsigmoid/avx512f-rr1-lut16-p3-perm-scalef.c.in
  //   Generator: tools/xngen
  //
  // Copyright 2020 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 <immintrin.h>
  
  #include <xnnpack/common.h>
  #include <xnnpack/intrinsics-polyfill.h>
  #include <xnnpack/vunary.h>
  
  
  void xnn_f32_vsigmoid_ukernel__avx512f_rr1_lut16_p3_perm_scalef_div_x32(
      size_t n,
      const float* x,
      float* y,
      const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)])
  {
    assert(n % sizeof(float) == 0);
  
    const __m512i vsign_mask = _mm512_set1_epi32((int) params->avx512_rr1_lut16_p3.sign_mask);
    const __m512 vmagic_bias = _mm512_set1_ps(params->avx512_rr1_lut16_p3.magic_bias);
    const __m512 vlog2e = _mm512_set1_ps(params->avx512_rr1_lut16_p3.log2e);
    const __m512 vtable = _mm512_load_ps(params->avx512_rr1_lut16_p3.table);
    const __m512 vminus_ln2 = _mm512_set1_ps(params->avx512_rr1_lut16_p3.minus_ln2);
    const __m512 vc3 = _mm512_set1_ps(params->avx512_rr1_lut16_p3.c3);
    const __m512 vc2 = _mm512_set1_ps(params->avx512_rr1_lut16_p3.c2);
    const __m512 vone = _mm512_set1_ps(params->avx512_rr1_lut16_p3.one);
  
    for (; n >= 32 * sizeof(float); n -= 32 * sizeof(float)) {
      const __m512 vx0 = _mm512_loadu_ps(x);
      const __m512 vx1 = _mm512_loadu_ps(x + 16);
      x += 32;
  
      const __m512 vz0 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx0), vsign_mask));
      const __m512 vz1 = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx1), vsign_mask));
  
      __m512 vn0 = _mm512_fmadd_ps(vz0, vlog2e, vmagic_bias);
      __m512 vn1 = _mm512_fmadd_ps(vz1, vlog2e, vmagic_bias);
  
      const __m512 vl0 = _mm512_permutexvar_ps(_mm512_castps_si512(vn0), vtable);
      const __m512 vl1 = _mm512_permutexvar_ps(_mm512_castps_si512(vn1), vtable);
  
      vn0 = _mm512_sub_ps(vn0, vmagic_bias);
      vn1 = _mm512_sub_ps(vn1, vmagic_bias);
  
      __m512 vt0 = _mm512_fmadd_ps(vn0, vminus_ln2, vz0);
      __m512 vt1 = _mm512_fmadd_ps(vn1, vminus_ln2, vz1);
  
      __m512 vp0 = _mm512_fmadd_ps(vt0, vc3, vc2);
      __m512 vp1 = _mm512_fmadd_ps(vt1, vc3, vc2);
  
      vp0 = _mm512_mul_ps(vp0, vt0);
      vp1 = _mm512_mul_ps(vp1, vt1);
  
      vp0 = _mm512_fmadd_ps(vt0, vp0, vt0);
      vp1 = _mm512_fmadd_ps(vt1, vp1, vt1);
  
      vp0 = _mm512_fmadd_ps(vl0, vp0, vl0);
      vp1 = _mm512_fmadd_ps(vl1, vp1, vl1);
  
      const __m512 ve0 = _mm512_scalef_ps(vp0, vn0);
      const __m512 ve1 = _mm512_scalef_ps(vp1, vn1);
  
      const __m512 vd0 = _mm512_add_ps(ve0, vone);
      const __m512 vd1 = _mm512_add_ps(ve1, vone);
  
      __m512 vf0 = _mm512_div_ps(ve0, vd0);
      __m512 vf1 = _mm512_div_ps(ve1, vd1);
  
      vf0 = _mm512_mask_sub_ps(vf0, _mm512_testn_epi32_mask(_mm512_castps_si512(vx0), vsign_mask), vone, vf0);
      vf1 = _mm512_mask_sub_ps(vf1, _mm512_testn_epi32_mask(_mm512_castps_si512(vx1), vsign_mask), vone, vf1);
  
      _mm512_storeu_ps(y, vf0);
      _mm512_storeu_ps(y + 16, vf1);
      y += 32;
    }
    for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
      const __m512 vx = _mm512_loadu_ps(x);
      x += 16;
  
      const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
  
      __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
      const __m512 vl = _mm512_permutexvar_ps(_mm512_castps_si512(vn), vtable);
      vn = _mm512_sub_ps(vn, vmagic_bias);
  
      __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2, vz);
  
      __m512 vp = _mm512_fmadd_ps(vt, vc3, vc2);
      vp = _mm512_mul_ps(vp, vt);
      vp = _mm512_fmadd_ps(vt, vp, vt);
      vp = _mm512_fmadd_ps(vl, vp, vl);
  
      const __m512 ve = _mm512_scalef_ps(vp, vn);
      const __m512 vd = _mm512_add_ps(ve, vone);
  
      __m512 vf = _mm512_div_ps(ve, vd);
  
      vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
  
      _mm512_storeu_ps(y, vf);
      y += 16;
    }
    if XNN_UNLIKELY(n != 0) {
      assert(n >= 1 * sizeof(float));
      assert(n <= 15 * sizeof(float));
  
      // Prepare mask for valid 32-bit elements (depends on n).
      n >>= 2 /* log2(sizeof(float)) */;
      const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
  
      const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
      const __m512 vz = _mm512_castsi512_ps(_mm512_or_epi32(_mm512_castps_si512(vx), vsign_mask));
  
      __m512 vn = _mm512_fmadd_ps(vz, vlog2e, vmagic_bias);
      const __m512 vl = _mm512_permutexvar_ps(_mm512_castps_si512(vn), vtable);
      vn = _mm512_sub_ps(vn, vmagic_bias);
  
      __m512 vt = _mm512_fmadd_ps(vn, vminus_ln2, vz);
  
      __m512 vp = _mm512_fmadd_ps(vt, vc3, vc2);
      vp = _mm512_mul_ps(vp, vt);
      vp = _mm512_fmadd_ps(vt, vp, vt);
      vp = _mm512_fmadd_ps(vl, vp, vl);
  
      const __m512 ve = _mm512_scalef_ps(vp, vn);
      const __m512 vd = _mm512_add_ps(ve, vone);
  
      __m512 vf = _mm512_div_ps(ve, vd);
  
      vf = _mm512_mask_sub_ps(vf, _mm512_testn_epi32_mask(_mm512_castps_si512(vx), vsign_mask), vone, vf);
  
      _mm512_mask_storeu_ps(y, vmask, vf);
    }
  }
  