GBBopen 1.5 Reference -- Fixnum operators

Fixnum operators

Fixnum operators

These fixnum declared-numeric operators are defined in the :gbbopen-tools module:

Operator	Operation	Example
`&`	`the fixnum`	`(& x)`
`+&`	`+`	`(+& x y z)`
`-&`	`-`	`(-& x y z)`
`1+&`	`1+`	`(1+& x)`
`1-&`	`1-`	`(1-& x)`
`*&`	`*`	`(*& x y z)`
`/&`	`/`	`(/& x y z)`
`=&`	`=`	`(=& x y z)`
`/=&`	`/=`	`(/=& x y z)`
`<&`	`<`	`(<& x y z)`
`<=&`	`<=`	`(<=& x y z)`
`>&`	`>`	`(>& x y z)`
`>=&`	`>=`	`(>=& x y z)`
`abs&`	`abs`	`(abs& x)`
`bounded-value&`	`bounded-value`	`(bounded-value& x y z)`
`ceiling&`	`ceiling`	`(ceiling& x divisor)`
`decf&`	`decf`	`(decf& x delta)`
`decf-&after`	`decf-after`	`(decf&-after x delta)`
`decf/delete&-acons`	`decf/delete-acons`	`(decf/delete&-acons`
		`x delta alist)`
`evenp&`	`evenp`	`(evenp& x)`
`fceiling&`	`fceiling`	`(fceiling& x divisor)`
`floor&`	`floor`	`(floor& x divisor)`
`ffloor&`	`ffloor`	`(ffloor& x divisor)`
`fround&`	`fround`	`(fround& x divisor)`
`ftruncate&`	`ftruncate`	`(ftruncate& x divisor)`
`incf&`	`incf`	`(incf& x delta)`
`incf&-after`	`incf-after`	`(incf&-after x delta)`
`max&`	`max`	`(max& x y z)`
`min&`	`min`	`(min& x y z)`
`minusp&`	`minusp`	`(minusp& x)`
`mod&`	`mod`	`(mod& x divisor)`
`oddp&`	`oddp`	`(oddp& x)`
`plusp&`	`plusp`	`(plusp& x)`
`pushnew/incf&-acons`	`pushnew/incf-acons`	`(pushnew/incf&-acons`
		`'x delta alist)`
`round&`	`round`	`(round& x divisor)`
`truncate&`	`truncate`	`(truncate& x divisor)`
`zerop&`	`zerop`	`(zerop& x)`

The one-argument function coerce& provides convenient fixnum coercion:

  (setf x (coerce& x))

Although (coerce x 'fixnum) is not permitted in Common Lisp, (coerce& x) is equivalent to (truncate x) when the remainder is zero and the returned quotient is a fixnum. Otherwise, (coerce& x) signals an error.

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Fixnum operators