Renesas TM V.3.20A Spezifikationen Seite 252

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Renesas Technology, Tools FAQs
Last Updated: January 22, 2001
Document Number: 01051095_e
Q.
When I describe a floating-point type of operation in C program, I get the following message during the link, indicating that
_100_Faddd is undefined. Why?
error: external symbol not defined: "__100_Faddd"
A.
When using a floating-point operation, you should link to the standard library (m32RcR.lib etc), as CC32R uses a function call to
perform the floating-point operation.
If you are linking the standard library only in order to perform the floating-point operation (and not using the C standard library),
you won't need to initialize the C standard library and, therefore, won't need to call _c_main from the start-up program. (Please refer
to [7.3.6 Calling the Main Function] in the CC32R User's Manual.)
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