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Code Issues Releases Wiki Activity

Added some const

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git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@227 64b25241-fba3-4117-9849-534c7e92360d
This commit is contained in:
Carles Fernandez 2012-08-04 11:39:01 +00:00
parent db5d130bff
commit 7a8d4a6509
1 changed files with 6 additions and 12 deletions
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18
src/algorithms/libs/gnss_signal_processing.cc
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@ -38,10 +38,10 @@
void complex_exp_gen(std::complex<float>* _dest, double _f, double _fs, unsigned int _samps) void complex_exp_gen(std::complex<float>* _dest, double _f, double _fs, unsigned int _samps)
{ {
double phase = 0; double phase = 0;
double phase_step = (GPS_TWO_PI*_f)/_fs; const double phase_step = (GPS_TWO_PI * _f) / _fs;
for(unsigned int i = 0; i < _samps; i++) for(unsigned int i = 0; i < _samps; i++)
{ {
_dest[i] = std::complex<float>(cos(phase),sin(phase)); _dest[i] = std::complex<float>(cos(phase), sin(phase));
phase += phase_step; phase += phase_step;
} }
} }
@ -150,28 +150,23 @@ void hex_to_binary_converter(int * _dest, char _from)
} }
} }
void resampler(std::complex<float>* _from, std::complex<float>* _dest, float _fs_in, void resampler(std::complex<float>* _from, std::complex<float>* _dest, float _fs_in,
float _fs_out, unsigned int _length_in, unsigned int _length_out) float _fs_out, unsigned int _length_in, unsigned int _length_out)
{ {
unsigned int _codeValueIndex; unsigned int _codeValueIndex;
//--- Find time constants -------------------------------------------------- //--- Find time constants --------------------------------------------------
float _t_in = 1/_fs_in; // Incoming sampling period in sec const float _t_in = 1/_fs_in; // Incoming sampling period in sec
float _t_out = 1/_fs_out; // Out sampling period in sec const float _t_out = 1/_fs_out; // Out sampling period in sec
for (unsigned int i=0; i<_length_out; i++) for (unsigned int i=0; i<_length_out; i++)
{ {
//=== Digitizing ======================================================= //=== Digitizing =======================================================
//--- compute index array to read sampled values -------------------------
//--- Make index array to read sampled values -------------------------
_codeValueIndex = ceil((_t_out * ((float)i + 1)) / _t_in) - 1; _codeValueIndex = ceil((_t_out * ((float)i + 1)) / _t_in) - 1;
if (i == _length_out - 1) if (i == _length_out - 1)
{ {
//--- Correct the last index (due to number rounding issues) ----------- //--- Correct the last index (due to number rounding issues) -----------
_dest[i] = _from[_length_in - 1]; _dest[i] = _from[_length_in - 1];
} }
else else
{ {
@ -179,5 +174,4 @@ void resampler(std::complex<float>* _from, std::complex<float>* _dest, float _fs
_dest[i] = _from[_codeValueIndex]; _dest[i] = _from[_codeValueIndex];
} }
} }
} }