Renesas TM V.3.20A Spezifikationen PDF herunterladen (Seite 235)

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Renesas Technology, Tools FAQs

Last Updated: September 20, 2001

Document Number: 01090501_e

I get the following warning when I assign the minimum value [-2147483648] as the long-type variable, even though this value is

stated in the manual. What is the problem?

"constant out of range due to unportable conversion"

The value stated in the manual, [-2147483648] is correct for the value for the long-type variable. However, according ANSI-C

language specifications, the [2147483648] part is an unsigned long-type variable, and when this is signed, it goes out of the

unsigned long-type range and a special conversion takes place. The compiler is issuing the warning concerning this point.

Normally, when stating the minimum value as the long-type variable, you should use the macro "LONG_MIN", which is defined in

the ANSI-C standard header file [limits.h].

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