1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-vcvt/scalar.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2022 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
12 #include <xnnpack/math.h>
13 #include <xnnpack/vcvt.h>
14
15
xnn_qs8_vcvt_ukernel__scalar_x2(size_t n,const int8_t * x,int8_t * y,const union xnn_qs8_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])16 void xnn_qs8_vcvt_ukernel__scalar_x2(
17 size_t n,
18 const int8_t* x,
19 int8_t* y,
20 const union xnn_qs8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)])
21 {
22 const int32_t vbias = params->scalar.bias;
23 const int32_t vmultiplier = params->scalar.multiplier;
24 for (; n >= 2 * sizeof(int8_t); n -= 2 * sizeof(int8_t)) {
25 int32_t vacc0 = x[0];
26 int32_t vacc1 = x[1];
27 x += 2;
28
29 vacc0 = vbias + vacc0 * vmultiplier;
30 vacc1 = vbias + vacc1 * vmultiplier;
31
32 int32_t vout0 = math_asr_s32(vacc0, 8);
33 int32_t vout1 = math_asr_s32(vacc1, 8);
34
35 vout0 = math_max_s32(vout0, -128);
36 vout1 = math_max_s32(vout1, -128);
37
38 vout0 = math_min_s32(vout0, 127);
39 vout1 = math_min_s32(vout1, 127);
40
41 y[0] = (int8_t) vout0;
42 y[1] = (int8_t) vout1;
43 y += 2;
44 }
45 if XNN_UNLIKELY(n != 0) {
46 int32_t vacc = *x;
47 vacc = vbias + vacc * vmultiplier;
48
49 int32_t vout = math_asr_s32(vacc, 8);
50 vout = math_max_s32(vout, -128);
51 vout = math_min_s32(vout, 127);
52 *y = (int8_t) vout;
53 }
54 }
55