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function set_malloc_debug (mdebug, new_debug_state)
%SET_MALLOC_DEBUG Turn on/off malloc debugging and mark the log.txt
%
% set_malloc_debug (mdebug, new_debug_state)
%
% If mdebug is false, then no malloc debugging is performed,
% and the global GraphBLAS_debug is just set to false, regardless
% of new_debug_state.
%
% If mdebug is true, then the global GraphBLAS_debug flag is set
% to new_debug_state, and this action is logged in the log.txt file.
if (mdebug)
% with malloc debugging, but allow it to be switched on or off,
% depending on the test
if (new_debug_state)
debug_on
fprintf ('================[malloc debugging turned on]============\n') ;
fp = fopen ('log.txt', 'a') ;
fprintf (fp, '[malloc debugging turned on]\n') ;
fclose (fp) ;
else
debug_off
fprintf ('================[malloc debugging turned off]===========\n') ;
fp = fopen ('log.txt', 'a') ;
fprintf (fp, '[malloc debugging turned off]\n') ;
fclose (fp) ;
end
else
% no malloc debugging; ignore new_debug_state
debug_off
end
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