#include <ansi_c.h>

const char * thousands(char *buffer, int size, char *fmt, double val)
{
	/* compute how many separators we need */
	#pragma DisableFunctionRuntimeChecking log10
	int nsep = log10(fabs(val));
	nsep = (nsep > 0 ? nsep / 3 : 0);
	/* format value */
	int len = snprintf(buffer, size, fmt, val);
	char *src = buffer + len;
	char *dst = src + nsep;
	/* copy till decimal separator */
	while (*src != '.')
		*dst-- = *src--;
	/* the next char is the decimal separator */
	int n = -1;
	/* copy till src and dst point to the same location */
	while (src != dst) {
		*dst-- = *src--;
		/* insert separator */
		if (isdigit(*src) && (++n) && ((n % 3) == 0))
			*dst-- = ' ';
	}
	return buffer;
}


double Peta(double x)
{
	return 1.0e15 * x;
}

double Tera(double x)
{
	return 1.0e12 * x;
}

double Giga(double x)
{
	return 1.0e9 * x;
}

double Mega(double x)
{
	return 1.0e6 * x;	
}

double kilo(double x)
{
	return 1.0e3 * x;
}

double milli(double x)
{
	return 1.0e-3 * x;
}
	
double micro(double x)
{
	return 1.0e-6 * x;
}

double nano(double x)
{
	return 1.0e-9 * x;
}

double pico(double x)
{
	return 1.e-12 * x;
}

double femto(double x)
{
	return 1.0e-15 * x;
}