radio/real.c

// --------------------------------------------------------------
#include <string.h>
#include <math.h>
#include "radio_types.h"

// --------------------------------------------------------------
// Real Functions
// --------------------------------------------------------------
radio_float_t dabs(radio_float_t x)
{
	if (x < 0)
		return -x;
	
	return x;
}

radio_float_t dsign(radio_float_t x)
{
	if (x < 0)
		return -1.0;
	
	return 1.0;
}

radio_float_t dmod(radio_float_t x, radio_float_t y)
{
	int xy;

	if (y == 0)
		return x;

	xy = (int)floor(x/y);

	return dsign(y)*(radio_float_t)fabs(x - y*(radio_float_t)xy);
}

radio_float_t dmax(radio_float_t x, radio_float_t y)
{
	if (x > y)
		return x;

	return y;
}

radio_float_t dmin(radio_float_t x, radio_float_t y)
{
	if (x < y)
		return x;

	return y;
}

radio_float_t dclamp(radio_float_t x, radio_float_t limit_low, radio_float_t limit_high)
{
	return dmin(dmax(x, limit_low), limit_high);
}

radio_float_t powerDB(radio_float_t v1, radio_float_t preScale)
{
	return (radio_float_t)(10*log10(RADIO_POWER_EPS + v1*preScale));
}

radio_float_t dsum(radio_float_t *pSrc, int len)
{
	radio_float_t sum = 0;
	
	while(len--)
		sum += *(pSrc++);

	return sum;
}

radio_float_t dmean(radio_float_t *pSrc, int len)
{
	return dsum(pSrc, len)/len;
}

radio_float_t dpow(radio_float_t base, radio_float_t exp)
{
	return (radio_float_t)pow(base, exp);
}

// --------------------------------------------------------------