IM_MEAN_STD(3) IM_MEAN_STD(3)
NAME
im_mean_std_double_buffer, im_mean_std_int_buffer - calculates the mean
and the std of data held by a by an int or double buffer
SYNOPSIS
#include <vips/vips.h>
int im_mean_std_int_buffer(buf, size, mean, std)
int *buf;
int size;
double *mean, *std;
int im_mean_std_double_buffer(buf, size, mean, std)
double *buf;
int size;
double *mean, *std;
DESCRIPTION
im_mean_std_int_buffer() and im_mean_std_double_buffer() calculate the
mean and the standard deviation (std) of data held by the integer or
double buffer buf. The buffer has size elements. The results are
returned to the locations pointed by mean and std. It is the responsi-
bility of the calling function to ensure that there is enough data in
the buffer.
RETURN VALUE
Both functions returns 0 on success and -1 on error.
SEE ALSO
im_avg(3), im_stats(3).
COPYRIGHT
N. Dessipris
AUTHOR
N. Dessipris - 10/05/1991
10 May 1991 IM_MEAN_STD(3)
im_mean_std_int_buffer 7.14.5 - Generated Mon Sep 8 06:12:41 CDT 2008