1*4bdc9457SAndroid Build Coastguard Worker // Auto-generated file. Do not edit! 2*4bdc9457SAndroid Build Coastguard Worker // Template: src/f32-velu/scalar-rr2-p6.c.in 3*4bdc9457SAndroid Build Coastguard Worker // Generator: tools/xngen 4*4bdc9457SAndroid Build Coastguard Worker // 5*4bdc9457SAndroid Build Coastguard Worker // Copyright 2020 Google LLC 6*4bdc9457SAndroid Build Coastguard Worker // 7*4bdc9457SAndroid Build Coastguard Worker // This source code is licensed under the BSD-style license found in the 8*4bdc9457SAndroid Build Coastguard Worker // LICENSE file in the root directory of this source tree. 9*4bdc9457SAndroid Build Coastguard Worker 10*4bdc9457SAndroid Build Coastguard Worker #include <assert.h> 11*4bdc9457SAndroid Build Coastguard Worker #include <math.h> 12*4bdc9457SAndroid Build Coastguard Worker 13*4bdc9457SAndroid Build Coastguard Worker #include <xnnpack/common.h> 14*4bdc9457SAndroid Build Coastguard Worker #include <xnnpack/math.h> 15*4bdc9457SAndroid Build Coastguard Worker #include <xnnpack/vunary.h> 16*4bdc9457SAndroid Build Coastguard Worker 17*4bdc9457SAndroid Build Coastguard Worker xnn_f32_velu_ukernel__scalar_rr2_p6_x2(size_t n,const float * x,float * y,const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS (1)])18*4bdc9457SAndroid Build Coastguard Workervoid xnn_f32_velu_ukernel__scalar_rr2_p6_x2( 19*4bdc9457SAndroid Build Coastguard Worker size_t n, 20*4bdc9457SAndroid Build Coastguard Worker const float* x, 21*4bdc9457SAndroid Build Coastguard Worker float* y, 22*4bdc9457SAndroid Build Coastguard Worker const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS(1)]) 23*4bdc9457SAndroid Build Coastguard Worker { 24*4bdc9457SAndroid Build Coastguard Worker assert(n % sizeof(float) == 0); 25*4bdc9457SAndroid Build Coastguard Worker 26*4bdc9457SAndroid Build Coastguard Worker const float vprescale = params->scalar_rr2_p6.prescale; 27*4bdc9457SAndroid Build Coastguard Worker const float valpha = params->scalar_rr2_p6.alpha; 28*4bdc9457SAndroid Build Coastguard Worker const float vbeta = params->scalar_rr2_p6.beta; 29*4bdc9457SAndroid Build Coastguard Worker const float vmagic_bias = params->scalar_rr2_p6.magic_bias; 30*4bdc9457SAndroid Build Coastguard Worker const float vlog2e = params->scalar_rr2_p6.log2e; 31*4bdc9457SAndroid Build Coastguard Worker const float vsat_cutoff = params->scalar_rr2_p6.sat_cutoff; 32*4bdc9457SAndroid Build Coastguard Worker const float vminus_ln2_hi = params->scalar_rr2_p6.minus_ln2_hi; 33*4bdc9457SAndroid Build Coastguard Worker const float vminus_ln2_lo = params->scalar_rr2_p6.minus_ln2_lo; 34*4bdc9457SAndroid Build Coastguard Worker const float vc6 = params->scalar_rr2_p6.c6; 35*4bdc9457SAndroid Build Coastguard Worker const float vc5 = params->scalar_rr2_p6.c5; 36*4bdc9457SAndroid Build Coastguard Worker const float vc4 = params->scalar_rr2_p6.c4; 37*4bdc9457SAndroid Build Coastguard Worker const float vc3 = params->scalar_rr2_p6.c3; 38*4bdc9457SAndroid Build Coastguard Worker const float vc2 = params->scalar_rr2_p6.c2; 39*4bdc9457SAndroid Build Coastguard Worker const float vone = params->scalar_rr2_p6.one; 40*4bdc9457SAndroid Build Coastguard Worker 41*4bdc9457SAndroid Build Coastguard Worker for (; n >= 2 * sizeof(float); n -= 2 * sizeof(float)) { 42*4bdc9457SAndroid Build Coastguard Worker float vx0 = x[0]; 43*4bdc9457SAndroid Build Coastguard Worker float vx1 = x[1]; 44*4bdc9457SAndroid Build Coastguard Worker x += 2; 45*4bdc9457SAndroid Build Coastguard Worker 46*4bdc9457SAndroid Build Coastguard Worker const float vz0 = vx0 * vprescale; 47*4bdc9457SAndroid Build Coastguard Worker const float vz1 = vx1 * vprescale; 48*4bdc9457SAndroid Build Coastguard Worker 49*4bdc9457SAndroid Build Coastguard Worker float vn0 = vz0 * vlog2e + vmagic_bias; 50*4bdc9457SAndroid Build Coastguard Worker float vn1 = vz1 * vlog2e + vmagic_bias; 51*4bdc9457SAndroid Build Coastguard Worker 52*4bdc9457SAndroid Build Coastguard Worker float vs0 = uint32_as_float(float_as_uint32(vn0) << 23); 53*4bdc9457SAndroid Build Coastguard Worker vn0 -= vmagic_bias; 54*4bdc9457SAndroid Build Coastguard Worker float vs1 = uint32_as_float(float_as_uint32(vn1) << 23); 55*4bdc9457SAndroid Build Coastguard Worker vn1 -= vmagic_bias; 56*4bdc9457SAndroid Build Coastguard Worker 57*4bdc9457SAndroid Build Coastguard Worker float vt0 = vn0 * vminus_ln2_hi + vz0; 58*4bdc9457SAndroid Build Coastguard Worker float vt1 = vn1 * vminus_ln2_hi + vz1; 59*4bdc9457SAndroid Build Coastguard Worker 60*4bdc9457SAndroid Build Coastguard Worker vt0 = vn0 * vminus_ln2_lo + vt0; 61*4bdc9457SAndroid Build Coastguard Worker vt1 = vn1 * vminus_ln2_lo + vt1; 62*4bdc9457SAndroid Build Coastguard Worker 63*4bdc9457SAndroid Build Coastguard Worker if XNN_UNPREDICTABLE(vz0 <= vsat_cutoff) { 64*4bdc9457SAndroid Build Coastguard Worker vs0 = 0.0f; 65*4bdc9457SAndroid Build Coastguard Worker vt0 = 0.0f; 66*4bdc9457SAndroid Build Coastguard Worker } 67*4bdc9457SAndroid Build Coastguard Worker if XNN_UNPREDICTABLE(vz1 <= vsat_cutoff) { 68*4bdc9457SAndroid Build Coastguard Worker vs1 = 0.0f; 69*4bdc9457SAndroid Build Coastguard Worker vt1 = 0.0f; 70*4bdc9457SAndroid Build Coastguard Worker } 71*4bdc9457SAndroid Build Coastguard Worker 72*4bdc9457SAndroid Build Coastguard Worker float vp0 = vc6 * vt0 + vc5; 73*4bdc9457SAndroid Build Coastguard Worker float vp1 = vc6 * vt1 + vc5; 74*4bdc9457SAndroid Build Coastguard Worker 75*4bdc9457SAndroid Build Coastguard Worker vp0 = vp0 * vt0 + vc4; 76*4bdc9457SAndroid Build Coastguard Worker vp1 = vp1 * vt1 + vc4; 77*4bdc9457SAndroid Build Coastguard Worker 78*4bdc9457SAndroid Build Coastguard Worker vp0 = vp0 * vt0 + vc3; 79*4bdc9457SAndroid Build Coastguard Worker vp1 = vp1 * vt1 + vc3; 80*4bdc9457SAndroid Build Coastguard Worker 81*4bdc9457SAndroid Build Coastguard Worker vp0 = vp0 * vt0 + vc2; 82*4bdc9457SAndroid Build Coastguard Worker vp1 = vp1 * vt1 + vc2; 83*4bdc9457SAndroid Build Coastguard Worker 84*4bdc9457SAndroid Build Coastguard Worker vp0 *= vt0; 85*4bdc9457SAndroid Build Coastguard Worker vp1 *= vt1; 86*4bdc9457SAndroid Build Coastguard Worker 87*4bdc9457SAndroid Build Coastguard Worker vt0 *= vs0; 88*4bdc9457SAndroid Build Coastguard Worker vs0 -= vone; 89*4bdc9457SAndroid Build Coastguard Worker vt1 *= vs1; 90*4bdc9457SAndroid Build Coastguard Worker vs1 -= vone; 91*4bdc9457SAndroid Build Coastguard Worker 92*4bdc9457SAndroid Build Coastguard Worker vp0 = vp0 * vt0 + vt0; 93*4bdc9457SAndroid Build Coastguard Worker vp1 = vp1 * vt1 + vt1; 94*4bdc9457SAndroid Build Coastguard Worker 95*4bdc9457SAndroid Build Coastguard Worker const float ve0 = (vp0 + vs0) * valpha; 96*4bdc9457SAndroid Build Coastguard Worker float vy0 = vx0 * vbeta; 97*4bdc9457SAndroid Build Coastguard Worker const float ve1 = (vp1 + vs1) * valpha; 98*4bdc9457SAndroid Build Coastguard Worker float vy1 = vx1 * vbeta; 99*4bdc9457SAndroid Build Coastguard Worker 100*4bdc9457SAndroid Build Coastguard Worker if XNN_UNPREDICTABLE(vx0 < 0.0f) { 101*4bdc9457SAndroid Build Coastguard Worker vy0 = ve0; 102*4bdc9457SAndroid Build Coastguard Worker } 103*4bdc9457SAndroid Build Coastguard Worker if XNN_UNPREDICTABLE(vx1 < 0.0f) { 104*4bdc9457SAndroid Build Coastguard Worker vy1 = ve1; 105*4bdc9457SAndroid Build Coastguard Worker } 106*4bdc9457SAndroid Build Coastguard Worker 107*4bdc9457SAndroid Build Coastguard Worker y[0] = vy0; 108*4bdc9457SAndroid Build Coastguard Worker y[1] = vy1; 109*4bdc9457SAndroid Build Coastguard Worker y += 2; 110*4bdc9457SAndroid Build Coastguard Worker } 111*4bdc9457SAndroid Build Coastguard Worker if XNN_UNLIKELY(n != 0) { 112*4bdc9457SAndroid Build Coastguard Worker float vx = *x; 113*4bdc9457SAndroid Build Coastguard Worker 114*4bdc9457SAndroid Build Coastguard Worker const float vz = vx * vprescale; 115*4bdc9457SAndroid Build Coastguard Worker 116*4bdc9457SAndroid Build Coastguard Worker float vn = vz * vlog2e + vmagic_bias; 117*4bdc9457SAndroid Build Coastguard Worker float vs = uint32_as_float(float_as_uint32(vn) << 23); 118*4bdc9457SAndroid Build Coastguard Worker vn -= vmagic_bias; 119*4bdc9457SAndroid Build Coastguard Worker 120*4bdc9457SAndroid Build Coastguard Worker float vt = vn * vminus_ln2_hi + vz; 121*4bdc9457SAndroid Build Coastguard Worker vt = vn * vminus_ln2_lo + vt; 122*4bdc9457SAndroid Build Coastguard Worker 123*4bdc9457SAndroid Build Coastguard Worker if XNN_UNPREDICTABLE(vz <= vsat_cutoff) { 124*4bdc9457SAndroid Build Coastguard Worker vs = 0.0f; 125*4bdc9457SAndroid Build Coastguard Worker vt = 0.0f; 126*4bdc9457SAndroid Build Coastguard Worker } 127*4bdc9457SAndroid Build Coastguard Worker 128*4bdc9457SAndroid Build Coastguard Worker float vp = vc6 * vt + vc5; 129*4bdc9457SAndroid Build Coastguard Worker vp = vp * vt + vc4; 130*4bdc9457SAndroid Build Coastguard Worker vp = vp * vt + vc3; 131*4bdc9457SAndroid Build Coastguard Worker vp = vp * vt + vc2; 132*4bdc9457SAndroid Build Coastguard Worker vp *= vt; 133*4bdc9457SAndroid Build Coastguard Worker 134*4bdc9457SAndroid Build Coastguard Worker vt *= vs; 135*4bdc9457SAndroid Build Coastguard Worker vs -= vone; 136*4bdc9457SAndroid Build Coastguard Worker vp = vp * vt + vt; 137*4bdc9457SAndroid Build Coastguard Worker const float ve = (vp + vs) * valpha; 138*4bdc9457SAndroid Build Coastguard Worker 139*4bdc9457SAndroid Build Coastguard Worker float vy = vx * vbeta; 140*4bdc9457SAndroid Build Coastguard Worker if XNN_UNPREDICTABLE(vx < 0.0f) { 141*4bdc9457SAndroid Build Coastguard Worker vy = ve; 142*4bdc9457SAndroid Build Coastguard Worker } 143*4bdc9457SAndroid Build Coastguard Worker 144*4bdc9457SAndroid Build Coastguard Worker *y = vy; 145*4bdc9457SAndroid Build Coastguard Worker } 146*4bdc9457SAndroid Build Coastguard Worker } 147