xref: /aosp_15_r20/external/XNNPACK/src/qs8-f32-vcvt/gen/vcvt-scalar-x3.c (revision 4bdc94577ba0e567308109d787f7fec7b531ce36)
1*4bdc9457SAndroid Build Coastguard Worker // Auto-generated file. Do not edit!
2*4bdc9457SAndroid Build Coastguard Worker //   Template: src/qs8-f32-vcvt/scalar.c.in
3*4bdc9457SAndroid Build Coastguard Worker //   Generator: tools/xngen
4*4bdc9457SAndroid Build Coastguard Worker //
5*4bdc9457SAndroid Build Coastguard Worker // Copyright 2021 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 
12*4bdc9457SAndroid Build Coastguard Worker #include <xnnpack/common.h>
13*4bdc9457SAndroid Build Coastguard Worker #include <xnnpack/math.h>
14*4bdc9457SAndroid Build Coastguard Worker #include <xnnpack/vcvt.h>
15*4bdc9457SAndroid Build Coastguard Worker 
16*4bdc9457SAndroid Build Coastguard Worker 
xnn_qs8_f32_vcvt_ukernel__scalar_x3(size_t n,const int8_t * x,float * y,const union xnn_qs8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])17*4bdc9457SAndroid Build Coastguard Worker void xnn_qs8_f32_vcvt_ukernel__scalar_x3(
18*4bdc9457SAndroid Build Coastguard Worker     size_t n,
19*4bdc9457SAndroid Build Coastguard Worker     const int8_t* x,
20*4bdc9457SAndroid Build Coastguard Worker     float* y,
21*4bdc9457SAndroid Build Coastguard Worker     const union xnn_qs8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)])
22*4bdc9457SAndroid Build Coastguard Worker {
23*4bdc9457SAndroid Build Coastguard Worker   assert(n != 0);
24*4bdc9457SAndroid Build Coastguard Worker   assert(n % sizeof(int8_t) == 0);
25*4bdc9457SAndroid Build Coastguard Worker   assert(x != NULL);
26*4bdc9457SAndroid Build Coastguard Worker   assert(y != NULL);
27*4bdc9457SAndroid Build Coastguard Worker 
28*4bdc9457SAndroid Build Coastguard Worker   const int32_t vzero_point = params->scalar.zero_point;
29*4bdc9457SAndroid Build Coastguard Worker   const float vscale = params->scalar.scale;
30*4bdc9457SAndroid Build Coastguard Worker 
31*4bdc9457SAndroid Build Coastguard Worker   for (; n >= 3 * sizeof(int8_t); n -= 3 * sizeof(int8_t)) {
32*4bdc9457SAndroid Build Coastguard Worker     int32_t vx0 = (int32_t) x[0];
33*4bdc9457SAndroid Build Coastguard Worker     int32_t vx1 = (int32_t) x[1];
34*4bdc9457SAndroid Build Coastguard Worker     int32_t vx2 = (int32_t) x[2];
35*4bdc9457SAndroid Build Coastguard Worker     x += 3;
36*4bdc9457SAndroid Build Coastguard Worker 
37*4bdc9457SAndroid Build Coastguard Worker     vx0 -= vzero_point;
38*4bdc9457SAndroid Build Coastguard Worker     vx1 -= vzero_point;
39*4bdc9457SAndroid Build Coastguard Worker     vx2 -= vzero_point;
40*4bdc9457SAndroid Build Coastguard Worker 
41*4bdc9457SAndroid Build Coastguard Worker     float vy0 = (float) vx0;
42*4bdc9457SAndroid Build Coastguard Worker     float vy1 = (float) vx1;
43*4bdc9457SAndroid Build Coastguard Worker     float vy2 = (float) vx2;
44*4bdc9457SAndroid Build Coastguard Worker 
45*4bdc9457SAndroid Build Coastguard Worker     vy0 *= vscale;
46*4bdc9457SAndroid Build Coastguard Worker     vy1 *= vscale;
47*4bdc9457SAndroid Build Coastguard Worker     vy2 *= vscale;
48*4bdc9457SAndroid Build Coastguard Worker 
49*4bdc9457SAndroid Build Coastguard Worker     y[0] = vy0;
50*4bdc9457SAndroid Build Coastguard Worker     y[1] = vy1;
51*4bdc9457SAndroid Build Coastguard Worker     y[2] = vy2;
52*4bdc9457SAndroid Build Coastguard Worker     y += 3;
53*4bdc9457SAndroid Build Coastguard Worker   }
54*4bdc9457SAndroid Build Coastguard Worker   if XNN_UNLIKELY(n != 0) {
55*4bdc9457SAndroid Build Coastguard Worker     do {
56*4bdc9457SAndroid Build Coastguard Worker       int32_t vx = *x++;
57*4bdc9457SAndroid Build Coastguard Worker       vx -= vzero_point;
58*4bdc9457SAndroid Build Coastguard Worker 
59*4bdc9457SAndroid Build Coastguard Worker       float vy = (float) vx;
60*4bdc9457SAndroid Build Coastguard Worker       vy *= vscale;
61*4bdc9457SAndroid Build Coastguard Worker       *y++ = vy;
62*4bdc9457SAndroid Build Coastguard Worker 
63*4bdc9457SAndroid Build Coastguard Worker       n -= sizeof(int8_t);
64*4bdc9457SAndroid Build Coastguard Worker     } while (n != 0);
65*4bdc9457SAndroid Build Coastguard Worker   }
66*4bdc9457SAndroid Build Coastguard Worker }
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