/usr/include/volk/volk_complex.h is in libvolk1-dev 1.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | #ifndef INCLUDED_VOLK_COMPLEX_H
#define INCLUDED_VOLK_COMPLEX_H
/*!
* \brief Provide typedefs and operators for all complex types in C and C++.
*
* The typedefs encompass all signed integer and floating point types.
* Each operator function is intended to work across all data types.
* Under C++, these operators are defined as inline templates.
* Under C, these operators are defined as preprocessor macros.
* The use of macros makes the operators agnostic to the type.
*
* The following operator functions are defined:
* - lv_cmake - make a complex type from components
* - lv_creal - get the real part of the complex number
* - lv_cimag - get the imaginary part of the complex number
* - lv_conj - take the conjugate of the complex number
*/
#ifdef __cplusplus
#include <complex>
#include <stdint.h>
typedef std::complex<int8_t> lv_8sc_t;
typedef std::complex<int16_t> lv_16sc_t;
typedef std::complex<int32_t> lv_32sc_t;
typedef std::complex<int64_t> lv_64sc_t;
typedef std::complex<float> lv_32fc_t;
typedef std::complex<double> lv_64fc_t;
template <typename T> inline std::complex<T> lv_cmake(const T &r, const T &i){
return std::complex<T>(r, i);
}
template <typename T> inline typename T::value_type lv_creal(const T &x){
return x.real();
}
template <typename T> inline typename T::value_type lv_cimag(const T &x){
return x.imag();
}
template <typename T> inline T lv_conj(const T &x){
return std::conj(x);
}
#else /* __cplusplus */
#include <complex.h>
typedef char complex lv_8sc_t;
typedef short complex lv_16sc_t;
typedef long complex lv_32sc_t;
typedef long long complex lv_64sc_t;
typedef float complex lv_32fc_t;
typedef double complex lv_64fc_t;
#define lv_cmake(r, i) ((r) + _Complex_I*(i))
// When GNUC is available, use the complex extensions.
// The extensions always return the correct value type.
// http://gcc.gnu.org/onlinedocs/gcc/Complex.html
#ifdef __GNUC__
#define lv_creal(x) (__real__(x))
#define lv_cimag(x) (__imag__(x))
#define lv_conj(x) (~(x))
// When not available, use the c99 complex function family,
// which always returns double regardless of the input type.
#else /* __GNUC__ */
#define lv_creal(x) (creal(x))
#define lv_cimag(x) (cimag(x))
#define lv_conj(x) (conj(x))
#endif /* __GNUC__ */
#endif /* __cplusplus */
#endif /* INCLUDE_VOLK_COMPLEX_H */
|