#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "smallft.h"
#include "os.h"
#include "misc.h"

Functions
static void	dradb2 (int ido, int l1, float cc, float ch, float *wa1)

static void	dradb3 (int ido, int l1, float cc, float ch, float wa1, float wa2)

static void	dradb4 (int ido, int l1, float cc, float ch, float wa1, float wa2, float *wa3)

static void	dradbg (int ido, int ip, int l1, int idl1, float cc, float c1, float c2, float ch, float ch2, float wa)

static void	dradf2 (int ido, int l1, float cc, float ch, float *wa1)

static void	dradf4 (int ido, int l1, float cc, float ch, float wa1, float wa2, float *wa3)

static void	dradfg (int ido, int ip, int l1, int idl1, float cc, float c1, float c2, float ch, float ch2, float wa)

void	drft_backward (drft_lookup l, float data)

void	drft_clear (drft_lookup *l)

void	drft_forward (drft_lookup l, float data)

void	drft_init (drft_lookup *l, int n)

static void	drftb1 (int n, float c, float ch, float wa, int ifac)

static void	drftf1 (int n, float c, float ch, float wa, int ifac)

static void	drfti1 (int n, float wa, int ifac)

static void	fdrffti (int n, float wsave, int ifac)

Function Documentation

static void dradb2	(	int	ido,
		int	l1,
		float *	cc,
		float *	ch,
		float *	wa1
	)

static

Definition at line 634 of file smallft.c.

References i, k, and t2.

Referenced by drftb1().

static void dradb3	(	int	ido,
		int	l1,
		float *	cc,
		float *	ch,
		float *	wa1,
		float *	wa2
	)

static

Definition at line 686 of file smallft.c.

References i, k, and t2.

Referenced by drftb1().

static void dradb4	(	int	ido,
		int	l1,
		float *	cc,
		float *	ch,
		float *	wa1,
		float *	wa2,
		float *	wa3
	)

static

Definition at line 749 of file smallft.c.

References i, k, and t2.

Referenced by drftb1().

static void dradbg	(	int	ido,
		int	ip,
		int	l1,
		int	idl1,
		float *	cc,
		float *	c1,
		float *	c2,
		float *	ch,
		float *	ch2,
		float *	wa
	)

static

Definition at line 840 of file smallft.c.

References cos(), i, j, k, sin(), and t2.

Referenced by drftb1().

static void dradf2	(	int	ido,
		int	l1,
		float *	cc,
		float *	ch,
		float *	wa1
	)

static

Definition at line 114 of file smallft.c.

References i, k, and t2.

Referenced by drftf1().

static void dradf4	(	int	ido,
		int	l1,
		float *	cc,
		float *	ch,
		float *	wa1,
		float *	wa2,
		float *	wa3
	)

static

Definition at line 169 of file smallft.c.

References i, k, and t2.

Referenced by drftf1().

static void dradfg	(	int	ido,
		int	ip,
		int	l1,
		int	idl1,
		float *	cc,
		float *	c1,
		float *	c2,
		float *	ch,
		float *	ch2,
		float *	wa
	)

static

Definition at line 271 of file smallft.c.

References cos(), i, j, k, sin(), and t2.

Referenced by drftf1().

void drft_backward	(	drft_lookup *	l,
		float *	data
	)

Definition at line 1237 of file smallft.c.

References drftb1(), drft_lookup::n, drft_lookup::splitcache, and drft_lookup::trigcache.

void drft_clear ( drft_lookup * l )

Definition at line 1249 of file smallft.c.

References _ogg_free, memset, drft_lookup::splitcache, and drft_lookup::trigcache.

Referenced by vorbis_dsp_clear().

void drft_forward	(	drft_lookup *	l,
		float *	data
	)

Definition at line 1232 of file smallft.c.

References drftf1(), drft_lookup::n, drft_lookup::splitcache, and drft_lookup::trigcache.

Referenced by main(), and mapping0_forward().

void drft_init	(	drft_lookup *	l,
		int	n
	)

Definition at line 1242 of file smallft.c.

References _ogg_calloc, fdrffti(), drft_lookup::n, drft_lookup::splitcache, and drft_lookup::trigcache.

Referenced by _vds_shared_init(), and main().

static void drftb1	(	int	n,
		float *	c,
		float *	ch,
		float *	wa,
		int *	ifac
	)

static

Definition at line 1154 of file smallft.c.

References dradb2(), dradb3(), dradb4(), dradbg(), and i.

Referenced by drft_backward().

static void drftf1	(	int	n,
		float *	c,
		float *	ch,
		float *	wa,
		int *	ifac
	)

static

Definition at line 573 of file smallft.c.

References dradf2(), dradf4(), dradfg(), and i.

Referenced by drft_forward().

static void drfti1	(	int	n,
		float *	wa,
		int *	ifac
	)

static

Definition at line 38 of file smallft.c.

References cos(), i, j, and sin().

Referenced by fdrffti().

static void fdrffti	(	int	n,
		float *	wsave,
		int *	ifac
	)

static

Definition at line 108 of file smallft.c.

References drfti1().

Referenced by drft_init().

Functions

Function Documentation