gusucode.com > 语音信号处理工具箱 - Voicebox源码程序 > Voicebox\sprintsi.m
function s=sprintsi(x,d,w) %SPRINTSI Print X with SI multiplier S=(X,D,W) % D is number of decimal places (+ve) or significant digits (-ve) [default=-3] % |W| is total width including multiplier % if W<=0 then trailing 0's will be eliminated % % Example: sprintsi(2345,-2) gives '2.3 k' % Copyright (C) Mike Brookes 1998 % % Last modified Thu Sep 10 15:19:12 1998 % % VOICEBOX is a MATLAB toolbox for speech processing. Home page is at % http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % This program is free software; you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation; either version 2 of the License, or % (at your option) any later version. % % This program is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. % % You can obtain a copy of the GNU General Public License from % ftp://prep.ai.mit.edu/pub/gnu/COPYING-2.0 or by writing to % Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% if nargin<3 w=0; end; if nargin<2 d=-3; end; f='afpnum kMGT'; e=max(-18,min(12,floor(log10(abs(x))))); k=floor(e/3); dp=max([0 d 3*k-d-e-1]); if w<=0 & dp w=abs(w); dp=max(find([1 mod(mod(round(x*10^(dp-3*k)),10^dp),10.^(dp:-1:1))]))-1; end if(k) s=sprintf(sprintf('%%%d.%df %c',w-2,dp,f(k+7)),x*1e-3^k); else s=sprintf(sprintf('%%%d.%df ',w-1,dp),x*1e-3^k); end