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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
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