1 // Auto-generated file. Do not edit! 2 // Template: src/f32-velu/scalar-rr2-p6.c.in 3 // Generator: tools/xngen 4 // 5 // Copyright 2020 Google LLC 6 // 7 // This source code is licensed under the BSD-style license found in the 8 // LICENSE file in the root directory of this source tree. 9 10 #include <assert.h> 11 #include <math.h> 12 13 #include <xnnpack/common.h> 14 #include <xnnpack/math.h> 15 #include <xnnpack/vunary.h> 16 17 xnn_f32_velu_ukernel__scalar_rr2_p6_x1(size_t n,const float * x,float * y,const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS (1)])18void xnn_f32_velu_ukernel__scalar_rr2_p6_x1( 19 size_t n, 20 const float* x, 21 float* y, 22 const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS(1)]) 23 { 24 assert(n % sizeof(float) == 0); 25 26 const float vprescale = params->scalar_rr2_p6.prescale; 27 const float valpha = params->scalar_rr2_p6.alpha; 28 const float vbeta = params->scalar_rr2_p6.beta; 29 const float vmagic_bias = params->scalar_rr2_p6.magic_bias; 30 const float vlog2e = params->scalar_rr2_p6.log2e; 31 const float vsat_cutoff = params->scalar_rr2_p6.sat_cutoff; 32 const float vminus_ln2_hi = params->scalar_rr2_p6.minus_ln2_hi; 33 const float vminus_ln2_lo = params->scalar_rr2_p6.minus_ln2_lo; 34 const float vc6 = params->scalar_rr2_p6.c6; 35 const float vc5 = params->scalar_rr2_p6.c5; 36 const float vc4 = params->scalar_rr2_p6.c4; 37 const float vc3 = params->scalar_rr2_p6.c3; 38 const float vc2 = params->scalar_rr2_p6.c2; 39 const float vone = params->scalar_rr2_p6.one; 40 41 do { 42 float vx = *x++; 43 44 const float vz = vx * vprescale; 45 46 float vn = vz * vlog2e + vmagic_bias; 47 float vs = uint32_as_float(float_as_uint32(vn) << 23); 48 vn -= vmagic_bias; 49 50 float vt = vn * vminus_ln2_hi + vz; 51 vt = vn * vminus_ln2_lo + vt; 52 53 if XNN_UNPREDICTABLE(vz <= vsat_cutoff) { 54 vs = 0.0f; 55 vt = 0.0f; 56 } 57 58 float vp = vc6 * vt + vc5; 59 vp = vp * vt + vc4; 60 vp = vp * vt + vc3; 61 vp = vp * vt + vc2; 62 vp *= vt; 63 64 vt *= vs; 65 vs -= vone; 66 vp = vp * vt + vt; 67 const float ve = (vp + vs) * valpha; 68 69 float vy = vx * vbeta; 70 if XNN_UNPREDICTABLE(vx < 0.0f) { 71 vy = ve; 72 } 73 74 *y++ = vy; 75 76 n -= sizeof(float); 77 } while (n != 0); 78 } 79