58 lines
2.2 KiB
Matlab
58 lines
2.2 KiB
Matlab
function v = getversion
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%GETVERSION return MATLAB version number as a double.
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% GETVERSION determines the MATLAB version, and returns it as a double. This
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% allows simple inequality comparisons to select code variants based on ranges
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% of MATLAB versions.
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%
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% As of MATLAB 7.10, the version numbers are listed below:
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%
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% MATLAB version getversion return value
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% ------------------------------- -----------------------
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% 7.10.0.499 (R2010a) 8.0 (this needs to be fixed).
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% 7.9.0.529 (R2009b) 7.9
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% 7.8.0.347 (R2009a) 7.8
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% 7.7.0.xxx (R2008b) 7.7
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% 7.6.0.324 (R2008a) 7.6
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% 7.5.0.342 (R2007b) 7.5
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% 7.4.0.287 (R2007a) 7.4
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% 7.3.0.267 (R2006b) 7.3
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% 7.2.0.232 (R2006a) 7.2
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% 7.1.0.246 (R14) Service Pack 3 7.1
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% 7.0.4.365 (R14) Service Pack 2 7.04
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% 7.0.1.24704 (R14) Service Pack 1 7.01
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% 6.5.2.202935 (R13) Service Pack 2 6.52
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% 6.1.0.4865 (R12.1) 6.1
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% ...
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% 5.3.1.something (R11.1) 5.31
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% 3.2 whatever 3.2
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%
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% Example:
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%
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% v = getversion ;
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% if (v >= 7.0)
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% this code is for MATLAB 7.x and later
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% elseif (v == 6.52)
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% this code is for MATLAB 6.5.2
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% else
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% this code is for MATLAB versions prior to 6.5.2
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% end
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%
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% This getversion function has been tested on versions 6.1 through 7.10, but it
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% should work in any MATLAB that has the functions version, sscanf, and length.
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%
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% MATLAB 7.10 adds a twist. It is the first subversion that is 2 digits
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% ("10"). I need to decide how to handle this case. I can't return 7.1,
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% of course. But returning 8.0 is also problematic.
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%
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% See also version, ver, verLessThan.
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% Copyright 2007, Timothy A. Davis
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% This function does not use ver, in the interest of speed and portability.
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% "version" is a built-in that is about 100 times faster than the ver m-file.
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% ver returns a struct, and structs do not exist in old versions of MATLAB.
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% All 3 functions used here (version, sscanf, and length) are built-in.
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v = sscanf (version, '%d.%d.%d') ;
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v = 10.^(0:-1:-(length(v)-1)) * v ;
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