Re: How can I get a nonscalar logical variable into a compiled function?

*To*: mathgroup at smc.vnet.net*Subject*: [mg56278] Re: How can I get a nonscalar logical variable into a compiled function?*From*: dh <dh at metrohm.ch>*Date*: Wed, 20 Apr 2005 05:33:05 -0400 (EDT)*References*: <d3t3o2$8og$1@smc.vnet.net> <d42kdb$398$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi All, the trouble seems to be that only numerical arrays are allowed inside a compiled function. The Mathematica book, chapter 2.6.15 gives a hint: Compile nevertheless also allows integers, complex numbers and logical variables (True or False), as well as arrays of numbers. Sincerely, Daniel dh wrote: > Hi Ben, > as arrays of boolean may not be fed to a compile function, you could > simply represent True/False by 0/1 for the Input/Output of your > function. Inside the functio, you may either choose to convert to > True/False or you can proceed with 0/1, whatever suits you better. > Sincerely, Daniel > > barrowes at alum.mit.edu wrote: > >>I can't seem to figure out how to get a nonscalar logical variable into >>a compiled function. >> >>I can get a nonscalar variable of other kinds into compiled function or >>a scalar True or False into a compiled function. >> >>For example the following two things work: >> >>fun1=Compile[{{x,_Real,2}} >>Print[x]; >>]; >> >>fun2=Compile[{{x,True|False}} >>Print[x]; >>]; >> >>but how can I specify a two-dimensional input variable into the second >>case? >>fun2=Compile[{{x,True|False,1}} >>Print[x]; >>]; >>doesn't work. It returns: >>gg = {False, True, True, True, True, True, True} >>fun2[gg] >>CompiledFunction::cfsa: Argument {False, True, True, True, True, True, >>True} \ >>at position 1 should be a True or False. >> >>Can only scalar logical variables be input into compiled functions? Am >>I missing something? >> >>Thanks, >>Ben >> > >