gusucode.com > bigdata 工具箱 matlab源码程序 > bigdata/@tall/private/computeSumResultType.m
function outType = computeSumResultType(inType, precisionFlagCell) %computeSumResultType compute the class of the result of SUM % outType = computeSumResultType(inType, precisionFlagCell) % inType is a class name, or '' if not known % precisionFlagCell is {'default'} or {} or similar % outType is a class name, or '' if not known. % Copyright 2016 The MathWorks, Inc. if strcmp(inType, 'duration') || isequal(precisionFlagCell, {'native'}) % durations are always the same as 'native' outType = inType; elseif isequal(precisionFlagCell, {'double'}) outType = 'double'; elseif isequal(precisionFlagCell, {'default'}) % 'default' generally means 'double', unless the input is 'single'. However, if % inType isn't known, it *might* be single, so we can't specify the output % in that case. if strcmp(inType, 'single') outType = inType; elseif ~isempty(inType) % The type is known not to be single - so 'default' means 'double' outType = 'double'; else % Fall-back - inType might be single outType = ''; end else % Not known what the type is going to be outType = ''; end end