62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* rs.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/10/07 17:57:54 by jhalford #+# #+# */
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/* Updated: 2017/10/07 18:19:47 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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#include <math.h>
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struct s_stats g_rs = {0, 0, 0, 0, 0, 0, 0};
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double sqrt(double x);
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void rs_clear(void)
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{
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g_rs.count = 0;
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g_rs.min = DBL_MAX;
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g_rs.max = -DBL_MAX;
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}
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void rs_push(double n)
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{
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double delta;
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g_rs.count++;
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n < g_rs.min ? g_rs.min = n : (0);
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n > g_rs.max ? g_rs.max = n : (0);
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if (g_rs.count == 1)
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{
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g_rs.avg = n;
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g_rs.m = 0;
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}
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else
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{
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delta = n - g_rs.avg;
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g_rs.avg += delta / g_rs.count;
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g_rs.m += delta * (n - g_rs.avg);
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}
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}
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void rs_calcmore(void)
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{
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if (g_rs.count == 0)
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{
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g_rs.min = 0;
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g_rs.max = 0;
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}
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if (g_rs.count < 2)
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{
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g_rs.var = 0;
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g_rs.stdev = 0;
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return ;
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}
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g_rs.var = g_rs.m / (g_rs.count - 1);
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g_rs.stdev = sqrt(g_rs.var);
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}
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