leansdr::trig16 Struct Reference

#include <math.h>

Collaboration diagram for leansdr::trig16:

Public Member Functions
	trig16 ()
const complex< float > &	expi (uint16_t a) const
const complex< float > &	expi (float a) const

Public Attributes
complex< float >	lut [65536]

Detailed Description

Definition at line 134 of file math.h.

Constructor & Destructor Documentation

trig16()

leansdr::trig16::trig16 ( )

inline

Definition at line 137 of file math.h.

References leansdr::complex< T >::im, M_PI, and leansdr::complex< T >::re.

    {
        for (int a = 0; a < 65536; ++a)
        {
            float af = a * 2 * M_PI / 65536;
            lut[a].re = cosf(af);
            lut[a].im = sinf(af);
        }
    }

Member Function Documentation

expi() [1/2]

const complex<float>& leansdr::trig16::expi ( uint16_t  a ) const

inline

Definition at line 146 of file math.h.

    {
        return lut[a];
    }

expi() [2/2]

const complex<float>& leansdr::trig16::expi ( float  a ) const

inline

Definition at line 151 of file math.h.

    {
        return expi((uint16_t)(int16_t)(int32_t)a);
    }

Member Data Documentation

lut

complex<float> leansdr::trig16::lut[65536]

Definition at line 136 of file math.h.

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The documentation for this struct was generated from the following file:

• plugins/channelrx/demoddatv/leansdr/math.h