1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
/*========================== begin_copyright_notice ============================
Copyright (C) 2020-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "../imf.h"
#pragma OPENCL FP_CONTRACT OFF
typedef struct
{
unsigned int Frac_PowerS0[16];
unsigned int poly_coeff1;
unsigned int poly_coeff2;
unsigned int poly_coeff3;
unsigned int add_const;
unsigned int AbsMask;
unsigned int Threshold;
} __internal_sexp2_la_data_avx512_t;
static __constant __internal_sexp2_la_data_avx512_t __internal_sexp2_la_data_avx512 = {
{
0x3F800000u,
0x3F85AAC3u,
0x3F8B95C2u,
0x3F91C3D3u,
0x3F9837F0u,
0x3F9EF532u,
0x3FA5FED7u,
0x3FAD583Fu,
0x3FB504F3u,
0x3FBD08A4u,
0x3FC5672Au,
0x3FCE248Cu,
0x3FD744FDu,
0x3FE0CCDFu,
0x3FEAC0C7u,
0x3FF5257Du,
},
0x3F317222u,
0x3E75F16Bu,
0x3D6854CAu,
0x49400000u,
0x7fffffffu,
0x42fc0000u,
};
typedef struct
{
unsigned int _sShifter;
unsigned int _sPC0;
unsigned int _sPC1;
unsigned int _sPC2;
unsigned int _sPC3;
unsigned int _sPC4;
unsigned int _sPC5;
unsigned int _sPC6;
unsigned int _iAbsMask;
unsigned int _iDomainRange;
} __internal_sexp2_la_data_t;
static __constant __internal_sexp2_la_data_t __internal_sexp2_la_data = {
0x4b400000u,
0x3F800000u,
0x3f317218u,
0x3e75fdefu,
0x3d6357cfu,
0x3c1d962cu,
0x3aaf7a51u,
0x39213c8cu,
0x7fffffffu,
0x42fc0000u,
};
static __constant union
{
unsigned int w;
float f;
} __sexp2_la_c6 = { 0x39224c80u };
static __constant union
{
unsigned int w;
float f;
} __sexp2_la_c5 = { 0x3aafa463u };
static __constant union
{
unsigned int w;
float f;
} __sexp2_la_c4 = { 0x3c1d94cbu };
static __constant union
{
unsigned int w;
float f;
} __sexp2_la_c3 = { 0x3d635766u };
static __constant union
{
unsigned int w;
float f;
} __sexp2_la_c2 = { 0x3e75fdf1u };
static __constant union
{
unsigned int w;
float f;
} __sexp2_la_c1 = { 0x3e45c862u };
__attribute__((always_inline))
inline int __internal_sexp2_la_cout (float *a, float *r)
{
int nRet = 0;
float x = *a;
float fN, R, poly, High, Rh, Rl;
int sN, sN2;
unsigned int N;
union
{
unsigned int w;
float f;
} T, T2, xi, res;
fN = SPIRV_OCL_BUILTIN(rint, _f32, ) (x);
R = x - fN;
sN = (int) fN;
N = sN;
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (__sexp2_la_c6.f, R, __sexp2_la_c5.f);
High = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (R, 0.5f, 1.0f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __sexp2_la_c4.f);
Rh = High - 1.0f;
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __sexp2_la_c3.f);
Rl = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (R, 0.5f, -Rh);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __sexp2_la_c2.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __sexp2_la_c1.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, Rl);
res.f = High + poly;
if (((unsigned int) (N + 0x7f - 2)) > 124 + 0x7f)
goto EXP2F_SPECIAL;
res.w += (N << 23);
*r = res.f;
return nRet;
EXP2F_SPECIAL:
xi.f = x;
if ((xi.w & 0x7fffffffu) >= 0x7f800000u)
{
if (xi.w == 0xff800000)
{
*r = 0.0f;
return nRet;
}
else
{
*r = x + x;
return nRet;
}
}
x = SPIRV_OCL_BUILTIN(fmin, _f32_f32, ) (x, 192.0f);
x = SPIRV_OCL_BUILTIN(fmax, _f32_f32, ) (x, -192.0f);
fN = SPIRV_OCL_BUILTIN(rint, _f32, ) (x);
sN = (int) fN;
sN2 = sN >> 1;
sN -= sN2;
T.w = (sN + 0x7f) << 23;
T2.w = (sN2 + 0x7f) << 23;
res.f *= T.f;
res.f *= T2.f;
nRet = (res.w < 0x00800000u) ? 4 : nRet;
nRet = (res.w == 0x7f800000) ? 3 : nRet;
*r = res.f;
return nRet;
}
float __ocl_svml_exp2f (float a)
{
float va1;
float vr1;
unsigned int vm;
float r;
va1 = a;;
__internal_sexp2_la_cout (&va1, &vr1);
r = vr1;;
return r;
}
|
