| // Auto-generated file. Do not edit! |
| // Template: src/f32-vsigmoid/sse-rr2-lut64-p2-div.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 <smmintrin.h> |
| |
| #include <xnnpack/common.h> |
| #include <xnnpack/vunary.h> |
| |
| |
| extern XNN_INTERNAL const float xnn_table_exp2minus_k_over_64[64]; |
| |
| void xnn_f32_vsigmoid_ukernel__sse41_rr2_lut64_p2_div_x16( |
| size_t n, |
| const float* x, |
| float* y, |
| const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS |
| { |
| assert(n % sizeof(float) == 0); |
| |
| const __m128 vsign_mask = _mm_load_ps(params->sse2_rr2_lut64_p2.sign_mask); |
| const __m128 vmagic_bias = _mm_load_ps(params->sse2_rr2_lut64_p2.magic_bias); |
| const __m128 vlog2e = _mm_load_ps(params->sse2_rr2_lut64_p2.log2e); |
| const __m128i vindex_mask = _mm_load_si128((const __m128i*) params->sse2_rr2_lut64_p2.index_mask); |
| const __m128 vminus_ln2_hi = _mm_load_ps(params->sse2_rr2_lut64_p2.minus_ln2_hi); |
| const __m128 vminus_ln2_lo = _mm_load_ps(params->sse2_rr2_lut64_p2.minus_ln2_lo); |
| const __m128 vc2 = _mm_load_ps(params->sse2_rr2_lut64_p2.c2); |
| const __m128 vone = _mm_load_ps(params->sse2_rr2_lut64_p2.one); |
| const __m128 vdenorm_cutoff = _mm_load_ps(params->sse2_rr2_lut64_p2.denorm_cutoff); |
| |
| 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); |
| x += 16; |
| |
| 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 __m128i ve0123 = _mm_slli_epi32(_mm_castps_si128(vn0123), 17); |
| const __m128i ve4567 = _mm_slli_epi32(_mm_castps_si128(vn4567), 17); |
| const __m128i ve89AB = _mm_slli_epi32(_mm_castps_si128(vn89AB), 17); |
| const __m128i veCDEF = _mm_slli_epi32(_mm_castps_si128(vnCDEF), 17); |
| |
| const __m128i vidx0123 = _mm_slli_epi32(_mm_and_si128(_mm_castps_si128(vn0123), vindex_mask), 2); |
| const __m128i vidx4567 = _mm_slli_epi32(_mm_and_si128(_mm_castps_si128(vn4567), vindex_mask), 2); |
| const __m128i vidx89AB = _mm_slli_epi32(_mm_and_si128(_mm_castps_si128(vn89AB), vindex_mask), 2); |
| const __m128i vidxCDEF = _mm_slli_epi32(_mm_and_si128(_mm_castps_si128(vnCDEF), vindex_mask), 2); |
| |
| #if XNN_ARCH_X86_64 |
| const uint64_t vidx01 = (uint64_t) _mm_cvtsi128_si64(vidx0123); |
| const uint64_t vidx23 = (uint64_t) _mm_extract_epi64(vidx0123, 1); |
| const __m128i vl0 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx01))); |
| const __m128i vl2 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx23))); |
| const __m128i vl01 = _mm_insert_epi32(vl0, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx01 >> 32))), 1); |
| const __m128i vl23 = _mm_insert_epi32(vl2, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx23 >> 32))), 1); |
| const __m128i vl0123 = _mm_unpacklo_epi64(vl01, vl23); |
| const uint64_t vidx45 = (uint64_t) _mm_cvtsi128_si64(vidx4567); |
| const uint64_t vidx67 = (uint64_t) _mm_extract_epi64(vidx4567, 1); |
| const __m128i vl4 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx45))); |
| const __m128i vl6 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx67))); |
| const __m128i vl45 = _mm_insert_epi32(vl4, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx45 >> 32))), 1); |
| const __m128i vl67 = _mm_insert_epi32(vl6, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx67 >> 32))), 1); |
| const __m128i vl4567 = _mm_unpacklo_epi64(vl45, vl67); |
| const uint64_t vidx89 = (uint64_t) _mm_cvtsi128_si64(vidx89AB); |
| const uint64_t vidxAB = (uint64_t) _mm_extract_epi64(vidx89AB, 1); |
| const __m128i vl8 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx89))); |
| const __m128i vlA = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidxAB))); |
| const __m128i vl89 = _mm_insert_epi32(vl8, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx89 >> 32))), 1); |
| const __m128i vlAB = _mm_insert_epi32(vlA, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidxAB >> 32))), 1); |
| const __m128i vl89AB = _mm_unpacklo_epi64(vl89, vlAB); |
| const uint64_t vidxCD = (uint64_t) _mm_cvtsi128_si64(vidxCDEF); |
| const uint64_t vidxEF = (uint64_t) _mm_extract_epi64(vidxCDEF, 1); |
| const __m128i vlC = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidxCD))); |
| const __m128i vlE = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidxEF))); |
| const __m128i vlCD = _mm_insert_epi32(vlC, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidxCD >> 32))), 1); |
| const __m128i vlEF = _mm_insert_epi32(vlE, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidxEF >> 32))), 1); |
| const __m128i vlCDEF = _mm_unpacklo_epi64(vlCD, vlEF); |
| #else // !XNN_ARCH_X86_64 |
| const uint32_t vidx0 = (uint32_t) _mm_cvtsi128_si32(vidx0123); |
| const uint32_t vidx1 = (uint32_t) _mm_extract_epi16(vidx0123, 2); |
| const uint32_t vidx2 = (uint32_t) _mm_extract_epi16(vidx0123, 4); |
| const uint32_t vidx3 = (uint32_t) _mm_extract_epi16(vidx0123, 6); |
| const __m128i vl0 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx0))); |
| const __m128i vl2 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx2))); |
| const __m128i vl01 = _mm_insert_epi32(vl0, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx1)), 1); |
| const __m128i vl23 = _mm_insert_epi32(vl2, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx3)), 1); |
| const __m128i vl0123 = _mm_unpacklo_epi64(vl01, vl23); |
| const uint32_t vidx4 = (uint32_t) _mm_cvtsi128_si32(vidx4567); |
| const uint32_t vidx5 = (uint32_t) _mm_extract_epi16(vidx4567, 2); |
| const uint32_t vidx6 = (uint32_t) _mm_extract_epi16(vidx4567, 4); |
| const uint32_t vidx7 = (uint32_t) _mm_extract_epi16(vidx4567, 6); |
| const __m128i vl4 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx4))); |
| const __m128i vl6 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx6))); |
| const __m128i vl45 = _mm_insert_epi32(vl4, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx5)), 1); |
| const __m128i vl67 = _mm_insert_epi32(vl6, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx7)), 1); |
| const __m128i vl4567 = _mm_unpacklo_epi64(vl45, vl67); |
| const uint32_t vidx8 = (uint32_t) _mm_cvtsi128_si32(vidx89AB); |
| const uint32_t vidx9 = (uint32_t) _mm_extract_epi16(vidx89AB, 2); |
| const uint32_t vidxA = (uint32_t) _mm_extract_epi16(vidx89AB, 4); |
| const uint32_t vidxB = (uint32_t) _mm_extract_epi16(vidx89AB, 6); |
| const __m128i vl8 = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx8))); |
| const __m128i vlA = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidxA))); |
| const __m128i vl89 = _mm_insert_epi32(vl8, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidx9)), 1); |
| const __m128i vlAB = _mm_insert_epi32(vlA, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidxB)), 1); |
| const __m128i vl89AB = _mm_unpacklo_epi64(vl89, vlAB); |
| const uint32_t vidxC = (uint32_t) _mm_cvtsi128_si32(vidxCDEF); |
| const uint32_t vidxD = (uint32_t) _mm_extract_epi16(vidxCDEF, 2); |
| const uint32_t vidxE = (uint32_t) _mm_extract_epi16(vidxCDEF, 4); |
| const uint32_t vidxF = (uint32_t) _mm_extract_epi16(vidxCDEF, 6); |
| const __m128i vlC = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidxC))); |
| const __m128i vlE = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidxE))); |
| const __m128i vlCD = _mm_insert_epi32(vlC, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidxD)), 1); |
| const __m128i vlEF = _mm_insert_epi32(vlE, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + vidxF)), 1); |
| const __m128i vlCDEF = _mm_unpacklo_epi64(vlCD, vlEF); |
| #endif // XNN_ARCH_X86_64 |
| |
| const __m128 vs0123 = _mm_castsi128_ps(_mm_add_epi32(vl0123, ve0123)); |
| const __m128 vs4567 = _mm_castsi128_ps(_mm_add_epi32(vl4567, ve4567)); |
| const __m128 vs89AB = _mm_castsi128_ps(_mm_add_epi32(vl89AB, ve89AB)); |
| const __m128 vsCDEF = _mm_castsi128_ps(_mm_add_epi32(vlCDEF, veCDEF)); |
| |
| 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(vz0123, _mm_mul_ps(vn0123, vminus_ln2_hi)); |
| __m128 vt4567 = _mm_add_ps(vz4567, _mm_mul_ps(vn4567, vminus_ln2_hi)); |
| __m128 vt89AB = _mm_add_ps(vz89AB, _mm_mul_ps(vn89AB, vminus_ln2_hi)); |
| __m128 vtCDEF = _mm_add_ps(vzCDEF, _mm_mul_ps(vnCDEF, vminus_ln2_hi)); |
| |
| vt0123 = _mm_add_ps(vt0123, _mm_mul_ps(vn0123, vminus_ln2_lo)); |
| vt4567 = _mm_add_ps(vt4567, _mm_mul_ps(vn4567, vminus_ln2_lo)); |
| vt89AB = _mm_add_ps(vt89AB, _mm_mul_ps(vn89AB, vminus_ln2_lo)); |
| vtCDEF = _mm_add_ps(vtCDEF, _mm_mul_ps(vnCDEF, vminus_ln2_lo)); |
| |
| __m128 vp0123 = _mm_mul_ps(vt0123, vc2); |
| __m128 vp4567 = _mm_mul_ps(vt4567, vc2); |
| __m128 vp89AB = _mm_mul_ps(vt89AB, vc2); |
| __m128 vpCDEF = _mm_mul_ps(vtCDEF, vc2); |
| |
| vp0123 = _mm_add_ps(vt0123, _mm_mul_ps(vp0123, vt0123)); |
| vp4567 = _mm_add_ps(vt4567, _mm_mul_ps(vp4567, vt4567)); |
| vp89AB = _mm_add_ps(vt89AB, _mm_mul_ps(vp89AB, vt89AB)); |
| vpCDEF = _mm_add_ps(vtCDEF, _mm_mul_ps(vpCDEF, vtCDEF)); |
| |
| const __m128 vy0123 = _mm_add_ps(vs0123, _mm_mul_ps(vs0123, vp0123)); |
| const __m128 vy4567 = _mm_add_ps(vs4567, _mm_mul_ps(vs4567, vp4567)); |
| const __m128 vy89AB = _mm_add_ps(vs89AB, _mm_mul_ps(vs89AB, vp89AB)); |
| const __m128 vyCDEF = _mm_add_ps(vsCDEF, _mm_mul_ps(vsCDEF, vpCDEF)); |
| |
| __m128 vf0123 = _mm_div_ps(vy0123, _mm_add_ps(vy0123, vone)); |
| __m128 vf4567 = _mm_div_ps(vy4567, _mm_add_ps(vy4567, vone)); |
| __m128 vf89AB = _mm_div_ps(vy89AB, _mm_add_ps(vy89AB, vone)); |
| __m128 vfCDEF = _mm_div_ps(vyCDEF, _mm_add_ps(vyCDEF, vone)); |
| |
| 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); |
| y += 16; |
| } |
| for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { |
| const __m128 vx = _mm_loadu_ps(x); |
| x += 4; |
| |
| const __m128 vz = _mm_or_ps(vx, vsign_mask); |
| |
| __m128 vn = _mm_add_ps(_mm_mul_ps(vz, vlog2e), vmagic_bias); |
| const __m128i ve = _mm_slli_epi32(_mm_castps_si128(vn), 17); |
| |
| const __m128i vidx = _mm_slli_epi32(_mm_and_si128(_mm_castps_si128(vn), vindex_mask), 2); |
| #if XNN_ARCH_X86_64 |
| const uint64_t vidx_lo = (uint64_t) _mm_cvtsi128_si64(vidx); |
| const uint64_t vidx_hi = (uint64_t) _mm_extract_epi64(vidx, 1); |
| const __m128i vl_ll = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_lo))); |
| const __m128i vl_hl = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_hi))); |
| const __m128i vl_lo = _mm_insert_epi32(vl_ll, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_lo >> 32))), 1); |
| const __m128i vl_hi = _mm_insert_epi32(vl_hl, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_hi >> 32))), 1); |
| #else // !XNN_ARCH_X86_64 |
| const __m128i vl_ll = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_cvtsi128_si32(vidx)))); |
| const __m128i vl_hl = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_extract_epi16(vidx, 4)))); |
| const __m128i vl_lo = _mm_insert_epi32(vl_ll, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_extract_epi16(vidx, 2))), 1); |
| const __m128i vl_hi = _mm_insert_epi32(vl_hl, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_extract_epi16(vidx, 6))), 1); |
| #endif // XNN_ARCH_X86_64 |
| const __m128i vl = _mm_unpacklo_epi64(vl_lo, vl_hi); |
| |
| const __m128 vs = _mm_castsi128_ps(_mm_add_epi32(vl, ve)); |
| vn = _mm_sub_ps(vn, vmagic_bias); |
| |
| __m128 vt = _mm_add_ps(vz, _mm_mul_ps(vn, vminus_ln2_hi)); |
| vt = _mm_add_ps(vt, _mm_mul_ps(vn, vminus_ln2_lo)); |
| |
| __m128 vp = _mm_mul_ps(vt, vc2); |
| vp = _mm_add_ps(vt, _mm_mul_ps(vp, vt)); |
| |
| const __m128 vy = _mm_add_ps(vs, _mm_mul_ps(vs, vp)); |
| |
| __m128 vf = _mm_div_ps(vy, _mm_add_ps(vy, vone)); |
| 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); |
| 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 __m128i ve = _mm_slli_epi32(_mm_castps_si128(vn), 17); |
| |
| const __m128i vidx = _mm_slli_epi32(_mm_and_si128(_mm_castps_si128(vn), vindex_mask), 2); |
| #if XNN_ARCH_X86_64 |
| const uint64_t vidx_lo = (uint64_t) _mm_cvtsi128_si64(vidx); |
| const uint64_t vidx_hi = (uint64_t) _mm_extract_epi64(vidx, 1); |
| const __m128i vl_ll = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_lo))); |
| const __m128i vl_hl = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_hi))); |
| const __m128i vl_lo = _mm_insert_epi32(vl_ll, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_lo >> 32))), 1); |
| const __m128i vl_hi = _mm_insert_epi32(vl_hl, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_hi >> 32))), 1); |
| #else // !XNN_ARCH_X86_64 |
| const __m128i vl_ll = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_cvtsi128_si32(vidx)))); |
| const __m128i vl_hl = _mm_cvtsi32_si128(*((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_extract_epi16(vidx, 4)))); |
| const __m128i vl_lo = _mm_insert_epi32(vl_ll, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_extract_epi16(vidx, 2))), 1); |
| const __m128i vl_hi = _mm_insert_epi32(vl_hl, *((const int*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) _mm_extract_epi16(vidx, 6))), 1); |
| #endif // XNN_ARCH_X86_64 |
| const __m128i vl = _mm_unpacklo_epi64(vl_lo, vl_hi); |
| |
| const __m128 vs = _mm_castsi128_ps(_mm_add_epi32(vl, ve)); |
| vn = _mm_sub_ps(vn, vmagic_bias); |
| |
| __m128 vt = _mm_add_ps(vz, _mm_mul_ps(vn, vminus_ln2_hi)); |
| vt = _mm_add_ps(vt, _mm_mul_ps(vn, vminus_ln2_lo)); |
| |
| __m128 vp = _mm_mul_ps(vt, vc2); |
| vp = _mm_add_ps(vt, _mm_mul_ps(vp, vt)); |
| |
| const __m128 vy = _mm_add_ps(vs, _mm_mul_ps(vs, vp)); |
| |
| __m128 vf = _mm_div_ps(vy, _mm_add_ps(vy, vone)); |
| 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); |
| } |
| } |
| } |