GNU Radio's BLOCKSTREAM Package
neon_mathfun.h
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1 /* NEON implementation of sin, cos, exp and log
2 
3  Inspired by Intel Approximate Math library, and based on the
4  corresponding algorithms of the cephes math library
5 */
6 
7 /* Copyright (C) 2011 Julien Pommier
8 
9  This software is provided 'as-is', without any express or implied
10  warranty. In no event will the authors be held liable for any damages
11  arising from the use of this software.
12 
13  Permission is granted to anyone to use this software for any purpose,
14  including commercial applications, and to alter it and redistribute it
15  freely, subject to the following restrictions:
16 
17  1. The origin of this software must not be misrepresented; you must not
18  claim that you wrote the original software. If you use this software
19  in a product, an acknowledgment in the product documentation would be
20  appreciated but is not required.
21  2. Altered source versions must be plainly marked as such, and must not be
22  misrepresented as being the original software.
23  3. This notice may not be removed or altered from any source distribution.
24 
25  (this is the zlib license)
26 */
27 
28 #if defined(__ARM_NEON__) || defined(__ARM_NEON)
29 #ifndef NEON_MATHFUN_H_
30 #define NEON_MATHFUN_H_
31 
32 #include <arm_neon.h>
33 
34 typedef float32x4_t v4sf; // vector of 4 float
35 
36 // prototypes
37 inline v4sf log_ps(v4sf x);
38 inline v4sf exp_ps(v4sf x);
39 inline v4sf sin_ps(v4sf x);
40 inline v4sf cos_ps(v4sf x);
41 inline void sincos_ps(v4sf x, v4sf *s, v4sf *c);
42 
43 #include "neon_mathfun.hxx"
44 
45 #endif
46 #endif