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    Length: 770 (0x302)
    Types: TextFile
    Names: »vfun.c«

└─⟦87ddcff64⟧ Bits:30001253 CPHDIST85 Tape, 1985 Autumn Conference Copenhagen
    └─⟦this⟧ »cph85dist/stat/src/vfun.c« 

TextFile

/*LINTLIBRARY*/
#include "unixstat.h"
FUN(vfun,vector functions,5.0,1985)

double
vsum (v, n)
float	*v;
	{
	double	sum = 0.0;
	while (n-- > 0)
		sum += *v++;
	return (sum);
	}

double
vsumsq (v, n)
float	*v;
	{
	double	sumsq = 0.0;
	while (n-- > 0)
		{
		sumsq += *v * *v;
		v++;
		}
	return (sumsq);
	}

double
standev (sum, sumsq, n)
double	sum, sumsq;
	{
	if (n <= 1) return (0.0);
	return (sqrt ((sumsq-sum*sum/n)/(n-1)));
	}

double
vsd (v, n)
float	*v;
	{
	return (standev (vsum (v, n), vsumsq (v, n), n));
	}

double
vmin (v, n)
float	*v;
	{
	double	min = *v;
	while (n-- > 0)
		{
		if (*v < min) min = *v;
		v++;
		}
	return (min);
	}

double
vmax (v, n)
float	*v;
	{
	double	max = *v;
	while (n-- > 0)
		{
		if (*v > max) max = *v;
		v++;
		}
	return (max);
	}