9.18 Special conditional expressions

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C-- supports eight special conditional expressions:

CARRYFLAG

NOTCARRYFLAG

OVERFLOW

NOTOVERFLOW

ZEROFLAG

NOTZEROFLAG

MINUSFLAG

PLUSFLAG

These can be used in place of any normal conditional expressions. For

example, to execute a block of code only if the carryflag is installed, use

the following command:

IF( CARRYFLAG )

{

// here one or more statements

}

In order to keep executing a block of code until the overflow flag is

set, use the following sort of code:

do {

// here one or more statements

} while( NOTOVERFLOW );