text: // Auto-generated file. Do not edit!
  //   Template: src/f32-sigmoid/sse-p5-div.c.in
  //   Generator: tools/xngen
  //
  // Copyright 2019 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 <smmintrin.h>
  
  #include <xnnpack/common.h>
  #include <xnnpack/vunary.h>
  
  
  void xnn_f32_sigmoid_ukernel__sse41_p5_div_x16(
      size_t n,
      const float* x,
      float* y,
      const void* params) XNN_DISABLE_TSAN
  {
    assert(n % sizeof(float) == 0);
  
    const __m128 vsign_mask = _mm_set1_ps(-0.0f);
    const __m128 vmagic_bias = _mm_set1_ps(0x1.8000FEp23f);
    const __m128 vlog2e = _mm_set1_ps(0x1.715476p0f);
    const __m128 vminus_ln2_hi = _mm_set1_ps(-0x1.62E400p-1f);
    const __m128 vminus_ln2_lo = _mm_set1_ps(-0x1.7F7D1Cp-20f);
    const __m128 vc5 = _mm_set1_ps(0x1.0F9F9Cp-7f);
    const __m128 vc4 = _mm_set1_ps(0x1.573A1Ap-5f);
    const __m128 vc3 = _mm_set1_ps(0x1.555A80p-3f);
    const __m128 vc2 = _mm_set1_ps(0x1.FFFDC6p-2f);
    const __m128 vc1 = _mm_set1_ps(0x1.FFFFF6p-1f);
    const __m128 vone = _mm_set1_ps(1.0f);
    const __m128 vdenorm_cutoff = _mm_set1_ps(-0x1.5D589Ep+6f);
  
    for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
      const __m128 vx0123 = _mm_loadu_ps(x);
      const __m128 vx4567 = _mm_loadu_ps(x + 4);
      const __m128 vx89AB = _mm_loadu_ps(x + 8);
      const __m128 vxCDEF = _mm_loadu_ps(x + 12);
  
      const __m128 vz0123 = _mm_or_ps(vx0123, vsign_mask);
      const __m128 vz4567 = _mm_or_ps(vx4567, vsign_mask);
      const __m128 vz89AB = _mm_or_ps(vx89AB, vsign_mask);
      const __m128 vzCDEF = _mm_or_ps(vxCDEF, vsign_mask);
  
      __m128 vn0123 = _mm_add_ps(_mm_mul_ps(vz0123, vlog2e), vmagic_bias);
      __m128 vn4567 = _mm_add_ps(_mm_mul_ps(vz4567, vlog2e), vmagic_bias);
      __m128 vn89AB = _mm_add_ps(_mm_mul_ps(vz89AB, vlog2e), vmagic_bias);
      __m128 vnCDEF = _mm_add_ps(_mm_mul_ps(vzCDEF, vlog2e), vmagic_bias);
  
      const __m128 vs0123 = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn0123), 23));
      const __m128 vs4567 = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn4567), 23));
      const __m128 vs89AB = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn89AB), 23));
      const __m128 vsCDEF = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vnCDEF), 23));
  
      vn0123 = _mm_sub_ps(vn0123, vmagic_bias);
      vn4567 = _mm_sub_ps(vn4567, vmagic_bias);
      vn89AB = _mm_sub_ps(vn89AB, vmagic_bias);
      vnCDEF = _mm_sub_ps(vnCDEF, vmagic_bias);
  
      __m128 vt0123 = _mm_add_ps(_mm_mul_ps(vn0123, vminus_ln2_hi), vz0123);
      __m128 vt4567 = _mm_add_ps(_mm_mul_ps(vn4567, vminus_ln2_hi), vz4567);
      __m128 vt89AB = _mm_add_ps(_mm_mul_ps(vn89AB, vminus_ln2_hi), vz89AB);
      __m128 vtCDEF = _mm_add_ps(_mm_mul_ps(vnCDEF, vminus_ln2_hi), vzCDEF);
  
      vt0123 = _mm_add_ps(_mm_mul_ps(vn0123, vminus_ln2_lo), vt0123);
      vt4567 = _mm_add_ps(_mm_mul_ps(vn4567, vminus_ln2_lo), vt4567);
      vt89AB = _mm_add_ps(_mm_mul_ps(vn89AB, vminus_ln2_lo), vt89AB);
      vtCDEF = _mm_add_ps(_mm_mul_ps(vnCDEF, vminus_ln2_lo), vtCDEF);
  
      __m128 vp0123 = _mm_add_ps(_mm_mul_ps(vc5, vt0123), vc4);
      __m128 vp4567 = _mm_add_ps(_mm_mul_ps(vc5, vt4567), vc4);
      __m128 vp89AB = _mm_add_ps(_mm_mul_ps(vc5, vt89AB), vc4);
      __m128 vpCDEF = _mm_add_ps(_mm_mul_ps(vc5, vtCDEF), vc4);
  
      vp0123 = _mm_add_ps(_mm_mul_ps(vp0123, vt0123), vc3);
      vp4567 = _mm_add_ps(_mm_mul_ps(vp4567, vt4567), vc3);
      vp89AB = _mm_add_ps(_mm_mul_ps(vp89AB, vt89AB), vc3);
      vpCDEF = _mm_add_ps(_mm_mul_ps(vpCDEF, vtCDEF), vc3);
  
      vp0123 = _mm_add_ps(_mm_mul_ps(vp0123, vt0123), vc2);
      vp4567 = _mm_add_ps(_mm_mul_ps(vp4567, vt4567), vc2);
      vp89AB = _mm_add_ps(_mm_mul_ps(vp89AB, vt89AB), vc2);
      vpCDEF = _mm_add_ps(_mm_mul_ps(vpCDEF, vtCDEF), vc2);
  
      vp0123 = _mm_add_ps(_mm_mul_ps(vp0123, vt0123), vc1);
      vp4567 = _mm_add_ps(_mm_mul_ps(vp4567, vt4567), vc1);
      vp89AB = _mm_add_ps(_mm_mul_ps(vp89AB, vt89AB), vc1);
      vpCDEF = _mm_add_ps(_mm_mul_ps(vpCDEF, vtCDEF), vc1);
  
      vt0123 = _mm_mul_ps(vt0123, vs0123);
      vt4567 = _mm_mul_ps(vt4567, vs4567);
      vt89AB = _mm_mul_ps(vt89AB, vs89AB);
      vtCDEF = _mm_mul_ps(vtCDEF, vsCDEF);
  
      __m128 ve0123 = _mm_add_ps(_mm_mul_ps(vt0123, vp0123), vs0123);
      __m128 ve4567 = _mm_add_ps(_mm_mul_ps(vt4567, vp4567), vs4567);
      __m128 ve89AB = _mm_add_ps(_mm_mul_ps(vt89AB, vp89AB), vs89AB);
      __m128 veCDEF = _mm_add_ps(_mm_mul_ps(vtCDEF, vpCDEF), vsCDEF);
  
      __m128 vd0123 = _mm_add_ps(ve0123, vone);
      __m128 vd4567 = _mm_add_ps(ve4567, vone);
      __m128 vd89AB = _mm_add_ps(ve89AB, vone);
      __m128 vdCDEF = _mm_add_ps(veCDEF, vone);
  
      __m128 vf0123 = _mm_div_ps(ve0123, vd0123);
      __m128 vf4567 = _mm_div_ps(ve4567, vd4567);
      __m128 vf89AB = _mm_div_ps(ve89AB, vd89AB);
      __m128 vfCDEF = _mm_div_ps(veCDEF, vdCDEF);
  
      vf0123 = _mm_andnot_ps(_mm_cmplt_ps(vz0123, vdenorm_cutoff), vf0123);
      vf4567 = _mm_andnot_ps(_mm_cmplt_ps(vz4567, vdenorm_cutoff), vf4567);
      vf89AB = _mm_andnot_ps(_mm_cmplt_ps(vz89AB, vdenorm_cutoff), vf89AB);
      vfCDEF = _mm_andnot_ps(_mm_cmplt_ps(vzCDEF, vdenorm_cutoff), vfCDEF);
  
      vf0123 = _mm_blendv_ps(_mm_sub_ps(vone, vf0123), vf0123, vx0123);
      vf4567 = _mm_blendv_ps(_mm_sub_ps(vone, vf4567), vf4567, vx4567);
      vf89AB = _mm_blendv_ps(_mm_sub_ps(vone, vf89AB), vf89AB, vx89AB);
      vfCDEF = _mm_blendv_ps(_mm_sub_ps(vone, vfCDEF), vfCDEF, vxCDEF);
  
      _mm_storeu_ps(y, vf0123);
      _mm_storeu_ps(y + 4, vf4567);
      _mm_storeu_ps(y + 8, vf89AB);
      _mm_storeu_ps(y + 12, vfCDEF);
  
      x += 16;
      y += 16;
    }
    for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
      const __m128 vx = _mm_loadu_ps(x);
  
      const __m128 vz = _mm_or_ps(vx, vsign_mask);
  
      __m128 vn = _mm_add_ps(_mm_mul_ps(vz, vlog2e), vmagic_bias);
      const __m128 vs = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn), 23));
      vn = _mm_sub_ps(vn, vmagic_bias);
  
      __m128 vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_hi), vz);
      vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_lo), vt);
  
      __m128 vp = _mm_add_ps(_mm_mul_ps(vc5, vt), vc4);
      vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc3);
      vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc2);
      vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc1);
  
      vt = _mm_mul_ps(vt, vs);
      __m128 ve = _mm_add_ps(_mm_mul_ps(vt, vp), vs);
  
      __m128 vd = _mm_add_ps(ve, vone);
      __m128 vf = _mm_div_ps(ve, vd);
  
      vf = _mm_andnot_ps(_mm_cmplt_ps(vz, vdenorm_cutoff), vf);
      vf = _mm_blendv_ps(_mm_sub_ps(vone, vf), vf, vx);
  
      _mm_storeu_ps(y, vf);
  
      x += 4;
      y += 4;
    }
    if XNN_UNLIKELY(n != 0) {
      const __m128 vx = _mm_loadu_ps(x);
  
      const __m128 vz = _mm_or_ps(vx, vsign_mask);
  
      __m128 vn = _mm_add_ps(_mm_mul_ps(vz, vlog2e), vmagic_bias);
      const __m128 vs = _mm_castsi128_ps(_mm_slli_epi32(_mm_castps_si128(vn), 23));
      vn = _mm_sub_ps(vn, vmagic_bias);
  
      __m128 vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_hi), vz);
      vt = _mm_add_ps(_mm_mul_ps(vn, vminus_ln2_lo), vt);
  
      __m128 vp = _mm_add_ps(_mm_mul_ps(vc5, vt), vc4);
      vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc3);
      vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc2);
      vp = _mm_add_ps(_mm_mul_ps(vp, vt), vc1);
  
      vt = _mm_mul_ps(vt, vs);
      __m128 ve = _mm_add_ps(_mm_mul_ps(vt, vp), vs);
  
      __m128 vd = _mm_add_ps(ve, vone);
      __m128 vf = _mm_div_ps(ve, vd);
  
      vf = _mm_andnot_ps(_mm_cmplt_ps(vz, vdenorm_cutoff), vf);
      vf = _mm_blendv_ps(_mm_sub_ps(vone, vf), vf, vx);
  
      if (n & (2 * sizeof(float))) {
        _mm_storel_pi((__m64*) y, vf);
        vf = _mm_movehl_ps(vf, vf);
        y += 2;
      }
      if (n & (1 * sizeof(float))) {
        _mm_store_ss(y, vf);
      }
    }
  }
  