122 lines
5.3 KiB
Matlab
122 lines
5.3 KiB
Matlab
function options_=set_dynare_seed_local_options(options_,a,b)
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% options_=set_dynare_seed_local_options(options_,a,b)
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% Set seeds depending on Matlab (octave) version
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% Inputs:
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% o options_ options structure
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% o a first input argument,
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% for single argument input, either
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% [number] seed
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% [string] 'default'
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% 'reset'
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% 'clock'
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% for two inputs:
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% [string] indicating feasible RNG algorithm (default: 'mt19937ar')
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% o b second input argument
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% [number] seed for algorithm
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% specified with first input
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% Copyright © 2010-2023 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <https://www.gnu.org/licenses/>.
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if nargin<2
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error('set_dynare_seed:: I need at least two input arguments!')
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end
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matlab_random_streams = ~(isoctave || options_.parallel_info.isHybridMatlabOctave);
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if matlab_random_streams% Use new matlab interface.
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if nargin==2
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if ischar(a) && strcmpi(a,'default')
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options_.DynareRandomStreams.algo = 'mt19937ar';
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options_.DynareRandomStreams.seed = 0;
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s = RandStream(options_.DynareRandomStreams.algo,'Seed',options_.DynareRandomStreams.seed);
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reset(RandStream.setGlobalStream(s));
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return
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end
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if ischar(a) && strcmpi(a,'reset')
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s = RandStream(options_.DynareRandomStreams.algo,'Seed',options_.DynareRandomStreams.seed);
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reset(RandStream.setGlobalStream(s));
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return
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end
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if ~ischar(a) || (ischar(a) && strcmpi(a, 'clock'))
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options_.DynareRandomStreams.algo = 'mt19937ar';
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if ischar(a)
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options_.DynareRandomStreams.seed = rem(floor(now*24*60*60), 2^32);
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else
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options_.DynareRandomStreams.seed = a;
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end
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s = RandStream(options_.DynareRandomStreams.algo,'Seed',options_.DynareRandomStreams.seed);
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reset(RandStream.setGlobalStream(s));
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return
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end
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error('set_dynare_seed:: something is wrong in the calling sequence!')
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elseif nargin==3
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if ~ischar(a) || ~( strcmpi(a,'mcg16807') || ...
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strcmpi(a,'mlfg6331_64') || ...
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strcmpi(a,'mrg32k3a') || ...
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strcmpi(a,'mt19937ar') || ...
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strcmpi(a,'shr3cong') || ...
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strcmpi(a,'swb2712') )
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disp('set_dynare_seed:: First argument must be string designing the uniform random number algorithm!')
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RandStream.list
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skipline()
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disp('set_dynare_seed:: Change the first input accordingly...')
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skipline()
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error(' ')
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end
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if ~isint(b)
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error('set_dynare_seed:: The second input argument must be an integer!')
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end
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options_.DynareRandomStreams.algo = a;
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options_.DynareRandomStreams.seed = b;
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s = RandStream(options_.DynareRandomStreams.algo,'Seed',options_.DynareRandomStreams.seed);
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reset(RandStream.setGlobalStream(s));
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end
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else% Use old matlab interface.
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if nargin==2
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if ischar(a) && strcmpi(a,'default')
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if isoctave
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options_.DynareRandomStreams.algo = 'state';
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else
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options_.DynareRandomStreams.algo = 'twister';
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end
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options_.DynareRandomStreams.seed = 0;
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rand(options_.DynareRandomStreams.algo,options_.DynareRandomStreams.seed);
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randn('state',options_.DynareRandomStreams.seed);
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return
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end
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if ischar(a) && strcmpi(a,'reset')
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rand(options_.DynareRandomStreams.algo,options_.DynareRandomStreams.seed);
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randn('state',options_.DynareRandomStreams.seed);
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return
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end
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if (~ischar(a) && isint(a)) || (ischar(a) && strcmpi(a,'clock'))
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if ischar(a)
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options_.DynareRandomStreams.seed = floor(now*24*60*60);
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else
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options_.DynareRandomStreams.seed = a;
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end
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rand(options_.DynareRandomStreams.algo,options_.DynareRandomStreams.seed);
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randn('state',options_.DynareRandomStreams.seed);
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return
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end
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error('set_dynare_seed:: Something is wrong in the calling sequence!')
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else
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error('set_dynare_seed:: Cannot use more than one input argument with your version of Matlab/Octave!')
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end
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end
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