GRASS Programmer's Manual
6.4.3(2013)-r
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shapiroe.c
Go to the documentation of this file.
1
#include <stdio.h>
2
#include <math.h>
3
4
5
double
*
shapiro_wilk_exp
(
double
*x,
int
n
)
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{
7
static
double
y
[2];
8
double
mean,
b
, s1, xs, sum1 = 0.0, sum2 = 0.0;
9
int
i;
10
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for
(i = 0; i <
n
; ++i)
12
if
(i == 0 || xs > x[i])
13
xs = x[i];
14
15
for
(i = 0; i <
n
; ++i) {
16
sum1 += x[i];
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sum2 += x[i] * x[i];
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}
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20
s1 = sum2 - sum1 * sum1 /
n
;
21
mean = sum1 /
n
;
22
b = (mean - xs) * sqrt((
double
)n / (n - 1.0));
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y[0] = b * b / s1;
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#ifdef NOISY
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fprintf(stdout,
" TEST15 SW(E) =%10.4f\n"
, y[0]);
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#endif
/* NOISY */
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return
y
;
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}
b
float b
Definition:
named_colr.c:8
y
int y
Definition:
plot.c:34
shapiro_wilk_exp
double * shapiro_wilk_exp(double *x, int n)
Definition:
shapiroe.c:5
n
int n
Definition:
dataquad.c:291
lib
cdhc
shapiroe.c
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