osmo-gmr: src/codec/math.c File Reference

osmo-gmr 0.2.104-2b98 Osmocom GMR-1

Functions
math.c File Reference
AMBE vocoder » AMBE vocoder - internal API

Osmocom GMR-1 AMBE vocoder math functions. More...

`#include <math.h>`
`#include "private.h"`

## Functions
float | cosf_fast (float angle)
| Fast Cosinus approximation using a simple table. More...
float | sinf_fast (float angle)
| Fast Sinus approximation using a simple table. More...
void | ambe_fdct (float *out, float *in, int N, int M)
| Forward Discrete Cosine Transform (fDCT) More...
void | ambe_idct (float *out, float *in, int N, int M)
| Inverse Discrete Cosine Transform (iDCT) More...
void | ambe_fdft_fc (float *out_i, float *out_q, float *in, int N, int M)
| Forward Discrete Fourrier Transform (float->complex) More...
void | ambe_idft_cf (float *out, float *in_i, float *in_q, int N, int M)
| Inverse Discret Fourrier Transform (complex->float) More...

## Detailed Description

Osmocom GMR-1 AMBE vocoder math functions.