<!-- manual page source format generated by PolyglotMan v3.2, --> <!-- available at http://polyglotman.sourceforge.net/ --> <html> <head> <title>IM_MEAN_STD(3) manual page</title> </head> <body bgcolor='white'> <a href='#toc'>Table of Contents</a><p> <h2><a name='sect0' href='#toc0'>Name</a></h2> 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 <h2><a name='sect1' href='#toc1'>Synopsis</a></h2> <b>#include <vips/vips.h></b> <p> int im_mean_std_int_buffer(buf, size, mean, std) <br> <b>int *buf;</b> <br> <b>int size;</b> <br> <b>double *mean, *std;</b> <p> int im_mean_std_double_buffer(buf, size, mean, std) <br> <b>double *buf;</b> <br> <b>int size;</b> <br> <b>double *mean, *std;</b> <p> <h2><a name='sect2' href='#toc2'>Description</a></h2> 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 responsibility of the calling function to ensure that there is enough data in the buffer. <h2><a name='sect3' href='#toc3'>Return Value</a></h2> Both functions returns 0 on success and -1 on error. <h2><a name='sect4' href='#toc4'>See Also</a></h2> <a href='im_avg.3.html'>im_avg(3)</a> , <a href='im_stats.3.html'>im_stats(3)</a> . <h2><a name='sect5' href='#toc5'>Copyright</a></h2> <br> N. Dessipris <h2><a name='sect6' href='#toc6'>Author</a></h2> N. Dessipris - 10/05/1991 <p> <hr><p> <a name='toc'><b>Table of Contents</b></a><p> <ul> <li><a name='toc0' href='#sect0'>Name</a></li> <li><a name='toc1' href='#sect1'>Synopsis</a></li> <li><a name='toc2' href='#sect2'>Description</a></li> <li><a name='toc3' href='#sect3'>Return Value</a></li> <li><a name='toc4' href='#sect4'>SeeAlso</a></li> <li><a name='toc5' href='#sect5'>Copyright</a></li> <li><a name='toc6' href='#sect6'>Author</a></li> </ul> </body> </html>
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