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INFORMATION REGARDING PUBLIC SYMBOL

Hi to all,

I am want some information regarding public symbols used by keil compiler.

while single stepping through my code for lpc2214(arm7) I came across some public symbols like
?C?SDIV ,?C?FCAST, ?C?UDIV, ?C?CASTF etc..

Can anybody tell me
1)what is the purpose of this public symbols.
2)please suggest me the link from where to get the description of working and task of this public symbols
3)are they relocateable? can I place them into ram?

From their names I assume that they are for providing some basic services to upper level functions but

they are not giving desired results while used by functions located in ram using __ram attribute. i.e only few functions in ram and remaining code in flash.

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