1 
2 /*
3  * Copyright (c) 2017-2018, NVIDIA CORPORATION.  All rights reserved.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  */
18 
19 
20 int   const ABS_MASK_I  = 0x7fffffff;
21 int   const SGN_MASK_I  = 0x80000000;
22 float const THRESHOLD_F = 0.54f;
23 float const PI_F        = 3.141592654f;
24 
25 // p0 coefficients
26 float const A0_F        = -4.974142462e-02f;
27 float const B0_F        = -1.929998025e-02f;
28 float const C0_F        = -4.657111317e-02f;
29 float const D0_F        = -7.485233247e-02f;
30 float const E0_F        = -0.166670561e-00f;
31 float const F0_F        =  1.570796371e-00f;
32 
33 // p1 coefficients
34 float const A1_F        = -1.782068401e-03f;
35 float const B1_F        =  1.112941187e-02f;
36 float const C1_F        = -3.470803052e-02f;
37 float const D1_F        =  8.167114854e-02f;
38 float const E1_F        = -2.126772702e-01f;
39 float const F1_F        =  1.570580363e-00f;
40 
41