GNU Radio Manual and C++ API Reference  3.7.4.1
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volk_common.h
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1 #ifndef INCLUDED_LIBVOLK_COMMON_H
2 #define INCLUDED_LIBVOLK_COMMON_H
3 
4 ////////////////////////////////////////////////////////////////////////
5 // Cross-platform attribute macros
6 ////////////////////////////////////////////////////////////////////////
7 #if defined __GNUC__
8 # define __VOLK_ATTR_ALIGNED(x) __attribute__((aligned(x)))
9 # define __VOLK_ATTR_UNUSED __attribute__((unused))
10 # define __VOLK_ATTR_INLINE __attribute__((always_inline))
11 # define __VOLK_ATTR_DEPRECATED __attribute__((deprecated))
12 # if __GNUC__ >= 4
13 # define __VOLK_ATTR_EXPORT __attribute__((visibility("default")))
14 # define __VOLK_ATTR_IMPORT __attribute__((visibility("default")))
15 # else
16 # define __VOLK_ATTR_EXPORT
17 # define __VOLK_ATTR_IMPORT
18 # endif
19 #elif _MSC_VER
20 # define __VOLK_ATTR_ALIGNED(x) __declspec(align(x))
21 # define __VOLK_ATTR_UNUSED
22 # define __VOLK_ATTR_INLINE __forceinline
23 # define __VOLK_ATTR_DEPRECATED __declspec(deprecated)
24 # define __VOLK_ATTR_EXPORT __declspec(dllexport)
25 # define __VOLK_ATTR_IMPORT __declspec(dllimport)
26 #else
27 # define __VOLK_ATTR_ALIGNED(x)
28 # define __VOLK_ATTR_UNUSED
29 # define __VOLK_ATTR_INLINE
30 # define __VOLK_ATTR_DEPRECATED
31 # define __VOLK_ATTR_EXPORT
32 # define __VOLK_ATTR_IMPORT
33 #endif
34 
35 ////////////////////////////////////////////////////////////////////////
36 // Ignore annoying warnings in MSVC
37 ////////////////////////////////////////////////////////////////////////
38 #if defined(_MSC_VER)
39 # pragma warning(disable: 4244) //'conversion' conversion from 'type1' to 'type2', possible loss of data
40 # pragma warning(disable: 4305) //'identifier' : truncation from 'type1' to 'type2'
41 #endif
42 
43 ////////////////////////////////////////////////////////////////////////
44 // C-linkage declaration macros
45 // FIXME: due to the usage of complex.h, require gcc for c-linkage
46 ////////////////////////////////////////////////////////////////////////
47 #if defined(__cplusplus) && (__GNUC__)
48 # define __VOLK_DECL_BEGIN extern "C" {
49 # define __VOLK_DECL_END }
50 #else
51 # define __VOLK_DECL_BEGIN
52 # define __VOLK_DECL_END
53 #endif
54 
55 ////////////////////////////////////////////////////////////////////////
56 // Define VOLK_API for library symbols
57 // http://gcc.gnu.org/wiki/Visibility
58 ////////////////////////////////////////////////////////////////////////
59 #ifdef volk_EXPORTS
60 # define VOLK_API __VOLK_ATTR_EXPORT
61 #else
62 # define VOLK_API __VOLK_ATTR_IMPORT
63 #endif
64 
65 ////////////////////////////////////////////////////////////////////////
66 // The bit128 union used by some
67 ////////////////////////////////////////////////////////////////////////
68 #include <inttypes.h>
69 
70 #ifdef LV_HAVE_SSE
71 #include <xmmintrin.h>
72 #endif
73 
74 #ifdef LV_HAVE_SSE2
75 #include <emmintrin.h>
76 #endif
77 
78 union bit128{
79  uint16_t i16[8];
80  uint32_t i[4];
81  float f[4];
82  double d[2];
83 
84  #ifdef LV_HAVE_SSE
85  __m128 float_vec;
86  #endif
87 
88  #ifdef LV_HAVE_SSE2
89  __m128i int_vec;
90  __m128d double_vec;
91  #endif
92 };
93 
94 #define bit128_p(x) ((union bit128 *)(x))
95 
96 #endif /*INCLUDED_LIBVOLK_COMMON_H*/
bit128::i16
uint16_t i16[8]
Definition: volk_common.h:79
uint16_t
unsigned short uint16_t
Definition: stdint.h:79
uint32_t
unsigned int uint32_t
Definition: stdint.h:80
bit128::d
double d[2]
Definition: volk_common.h:82
bit128::f
float f[4]
Definition: volk_common.h:81
bit128
Definition: volk_common.h:78
bit128::i
uint32_t i[4]
Definition: volk_common.h:80