text: // Auto-generated file. Do not edit!
  //   Template: src/f32-velu/wasmsimd-rr2-p6.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 <wasm_simd128.h>
  
  #include <xnnpack/vunary.h>
  #include <xnnpack/common.h>
  
  
  void xnn_f32_velu_ukernel__wasmsimd_arm_rr2_p6_x4(
      size_t n,
      const float* x,
      float* y,
      const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
  {
    assert(n != 0);
    assert(n % sizeof(float) == 0);
    assert(x != NULL);
    assert(y != NULL);
  
    const v128_t vprescale = wasm_v32x4_load_splat(&params->scalar.prescale);
    const v128_t valpha = wasm_v32x4_load_splat(&params->scalar.alpha);
    const v128_t vbeta = wasm_v32x4_load_splat(&params->scalar.beta);
  
    const v128_t vsat_cutoff = wasm_f32x4_splat(-0x1.154246p+4f);
    const v128_t vmagic_bias = wasm_f32x4_splat(0x1.8000FEp23f);
    const v128_t vlog2e = wasm_f32x4_splat(0x1.715476p+0f);
    const v128_t vminus_ln2_hi = wasm_f32x4_splat(-0x1.62E440p-1f);
    const v128_t vminus_ln2_lo = wasm_f32x4_splat(0x1.0105C6p-21f);
    const v128_t vc6 = wasm_f32x4_splat(0x1.6b7338p-10f);
    const v128_t vc5 = wasm_f32x4_splat(0x1.12278Ep-7f);
    const v128_t vc4 = wasm_f32x4_splat(0x1.555716p-5f);
    const v128_t vc3 = wasm_f32x4_splat(0x1.5554B0p-3f);
    const v128_t vc2 = wasm_f32x4_splat(0x1.FFFFFEp-2f);
    const v128_t vone = wasm_f32x4_splat(1.0f);
  
    for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
      v128_t vx = wasm_v128_load(x);
      x += 4;
  
      const v128_t vz = wasm_f32x4_max(wasm_f32x4_mul(vx, vprescale), vsat_cutoff);
  
      v128_t vn = wasm_f32x4_add(wasm_f32x4_mul(vz, vlog2e), vmagic_bias);
      v128_t vs = wasm_i32x4_shl(vn, 23);
      vn = wasm_f32x4_sub(vn, vmagic_bias);
  
      v128_t vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_hi), vz);
      vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_lo), vt);
  
      v128_t vp = wasm_f32x4_add(wasm_f32x4_mul(vc6, vt), vc5);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vc4);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vc3);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vc2);
      vp = wasm_f32x4_mul(vp, vt);
  
      vt = wasm_f32x4_mul(vt, vs);
      vs = wasm_f32x4_sub(vs, vone);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vt);
      const v128_t ve = wasm_f32x4_mul(wasm_f32x4_add(vp, vs), valpha);
  
      const v128_t vsignm = wasm_i32x4_shr(vx, 31);
      vx = wasm_f32x4_mul(vx, vbeta);
      const v128_t vy = wasm_v128_bitselect(ve, vx, vsignm);
  
      wasm_v128_store(y, vy);
      y += 4;
    }
    if XNN_UNLIKELY(n != 0) {
      v128_t vx = wasm_v128_load(x);
  
      const v128_t vz = wasm_f32x4_max(wasm_f32x4_mul(vx, vprescale), vsat_cutoff);
  
      v128_t vn = wasm_f32x4_add(wasm_f32x4_mul(vz, vlog2e), vmagic_bias);
      v128_t vs = wasm_i32x4_shl(vn, 23);
      vn = wasm_f32x4_sub(vn, vmagic_bias);
  
      v128_t vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_hi), vz);
      vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_lo), vt);
  
      v128_t vp = wasm_f32x4_add(wasm_f32x4_mul(vc6, vt), vc5);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vc4);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vc3);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vc2);
      vp = wasm_f32x4_mul(vp, vt);
  
      vt = wasm_f32x4_mul(vt, vs);
      vs = wasm_f32x4_sub(vs, vone);
      vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vt);
      const v128_t ve = wasm_f32x4_mul(wasm_f32x4_add(vp, vs), valpha);
  
      const v128_t vsignm = wasm_i32x4_shr(vx, 31);
      vx = wasm_f32x4_mul(vx, vbeta);
      v128_t vy = wasm_v128_bitselect(ve, vx, vsignm);
  
      if (n & (2 * sizeof(float))) {
        *((double*) y) = wasm_f64x2_extract_lane(vy, 0);
        vy = wasm_v32x4_shuffle(vy, vy, 2, 3, 2, 3);
        y += 2;
      }
      if (n & (1 * sizeof(float))) {
        *y = wasm_f32x4_extract_lane(vy, 0);
      }
    }
  }
  