%                          convcon.m
%  Scope:   This MATLAB macro sets the most used conversion constants as
%           global variables.
%  Usage:   convcon
%  Description of global parameters:
%           sem_rad  - output, conversion factor from semicircle to radians
%           rad_sem  - output, conversion factor from radians to semicircles
%           deg_rad  - output, conversion factor from degree to radians 
%           rad_deg  - output, conversion factor from radian to degrees
%           deg_mrad  - output, conversion factor from degree to milliradians 
%           mrad_deg  - output, conversion factor from milliradians to degrees
%           ussf_m   - output, conversion factor from US survey foot to meters
%           m_ussf   - output, conversion factor from meter to US survey feet
%           if_m     - output, conversion factor from international foot to
%                      meters        
%           m_if     - output, conversion factor from meter to international
%                      feet
%           nmile_m  - output, conversion factor from international nautical 
%                      mile to meters
%           m_nmile  - output, conversion factor from meter to international 
%                      nautical miles
%           smile_m  - output, conversion factor from international statute 
%                      mile to meters
%           m_smile  - output, conversion factor from meter to international
%                      statute miles
%           smile_if - output, conversion factor from international statute 
%                      mile to international feet 
%           if_smile - output, conversion factor from international foot to
%                      international statute miles
%  Remarks: Some useful SI prefixes and values: 
%           kilo = 10^3, mega = 10^6, giga = 10^9, tera = 10^12, peta = 10^15, 
%           exa = 10^18,
%           milli = 10^(-3), micro = 10^(-6), nano = 10^(-9), pico = 10^(-12),
%           femto = 10^(-15), atto = 10^(-18).
%  Last update:  03/24/00
%  Copyright (C) 1996-00 by LL Consulting. All Rights Reserved.

global  sem_rad  deg_rad  deg_mrad  ussf_m  if_m  nmile_m  smile_m  smile_if     
global  rad_sem  rad_deg  mrad_deg  m_ussf  m_if  m_nmile  m_smile  if_smile

sem_rad  = pi;
rad_sem  = 1. / pi;
deg_rad  = pi / 180.;
rad_deg  = 180. / pi;
deg_mrad  = 1000. * pi / 180.;
mrad_deg  = 180. / (1000. * pi);
ussf_m   = 0.3048006096;
m_ussf   = 3.28083333334646;
if_m     = 0.3048;
m_if     = 3.28083989501312;
nmile_m  = 1852.;
m_nmile  = 5.399568034557236e-4;
smile_m  = 1609.344;
m_smile  = 6.213711922373339e-4;
smile_if = 5280.;
if_smile = 1.893939393939394e-4;