#include "hwo/fixpoint.h"

#if ((RAMEND - RAMSTART) >= 102400)	// Only with more than 100kB SRAM for now...

/* Lookup auf sinus tabelle... */
extern uint32_t __sin090[90<<8];

fixpoint_t fp_sin_lookup(fixpoint_t arc090)
{
	int32_t index = (arc090 >> 8);	// Lookup Table has index format fixpoint 24.8
	if (index < 0)
		return 0;
	if (index > (90<<8))
		return 0;
	return __sin090[ index ];
};

/* Reverse Lookup auf SINUS Tabelle */
fixpoint_t fp_sin_lookup_reverse(fixpoint_t sin)
{
	int32_t hi = 0,
		index = 0;
	
	for (hi = 0; __sin090[ hi<<8 ] <= sin ; hi++);
	index = hi << 8;
	while (__sin090[ index-- ] <= sin);
	
	return (index << 8);
};

#else

fixpoint_t fp_sin_lookup(fixpoint_t arc090)
{
	return fp_make(0);
};

fixpoint_t fp_sin_lookup_reverse(fixpoint_t sin)
{
	return fp_make(0);
};

#endif