CalcSD.c File Reference

Calculate mean and standard deviation. More...

#include <math.h>
#include "MathType.h"

Go to the source code of this file.

Functions
void	blCalcSD (REAL val, int action, REAL *mean, REAL *SD)

Detailed Description

Calculate mean and standard deviation.

Version

V1.4

Date

07.07.14

Copyright

(c) UCL / Dr. Andrew C. R. Martin 1990-2014

Author

Dr. Andrew C. R. Martin

Institute of Structural & Molecular Biology, University College London, Gower Street, London. WC1E 6BT.

andre.nosp@m.w@bi.nosp@m.oinf..nosp@m.org..nosp@m.uk andre.nosp@m.w.ma.nosp@m.rtin@.nosp@m.ucl..nosp@m.ac.uk

This code is NOT IN THE PUBLIC DOMAIN, but it may be copied according to the conditions laid out in the accompanying file COPYING.DOC.

The code may be modified as required, but any modifications must be documented so that the person responsible can be identified.

The code may not be sold commercially or included as part of a commercial product except as described in the file COPYING.DOC.

Description:

This routine calculates the mean and standard deviation from a set of numbers. The routine is called with each value to be sampled and the action required is specified.

Usage:

  #include "MathUtil.h" before using these routines

  CalcSD(val,action,mean,SD)
  --------------------------
  Input:   val     int       The value to be sampled
  Input:   action  short     0: Sample the value
                             1: Calculate & return mean and SD
                             2: Clear the sample lists
  Output:  mean    *REAL     The returned mean
  Output:  SD      *REAL     The returned standard deviation

  The output values are only set when action=1

Revision History:

• V1.0 30.03.90 Original By: ACRM
• V1.1 17.06.93 Modified for book
• V1.2 01.03.94 Added CalcExtSD()
• V1.3 22.06.94 Fixed for just one value
• V1.4 07.07.14 Use bl prefix for functions By: CTP

Definition in file CalcSD.c.

Function Documentation

void blCalcSD	(	REAL	val,
		int	action,
		REAL *	mean,
		REAL *	SD
	)

Parameters

[in]	val	The value to be sampled
[in]	action	0: Sample the value 1: Calculate & return mean and SD 2: Clear the sample lists
[out]	mean	The returned mean
[out]	SD	The returned standard deviation

Calculate the mean and standard deviation from a set of numbers. The routine is called with each value to be sampled and the action required is specified.

The output values are only set when action=1

• 30.03.90 Original By: ACRM
• 17.06.93 Modified for book
• 22.06.94 Fixed for 0 values supplied
• 07.07.14 Use bl prefix for functions By: CTP

Definition at line 124 of file CalcSD.c.