C51: INTPROMOTE/NOINTPROMOTE Directive

Information in this article applies to:

• C51 Version All Versions

QUESTION

What does the INTPROMOTE directive do?

ANSWER

The INTPROMOTE directive enables ANSI integer promotion rules. Expressions used in if statements are promoted from smaller types to integer expressions before comparison. This allows Microsoft C and Borland C programs to be ported to C51 with fewer modifications.

The NOINTPROMOTE directive disables automatic integer promotions. Integer promotions are normally enabled to provide the greatest compatibility between C51 and other ANSI compilers.

If your program relies on standard ANSI integer promotions you should not use the NOINTPROMOTE directive.

MORE INFORMATION

• Refer to INTPROMOTE in the Cx51 User's Guide.

SEE ALSO

• C51: Compare 'char' Variable with Const Value is Never True
• C51: How big can a Binary Number be?
• C51: Integer Promotion

Last Reviewed: Thursday, February 25, 2021