2.4 Numerics
2.4.1 1+
(1+ num) -> number
num := number
Increment num by 1.
2.4.2 1-
(1- num) -> number
num := number
Decrement num by 1.
2.4.3 fx1+
(fx1+ num) -> fixnum
num := fixnum
Increment a fixnum num by 1.
2.4.4 fx1-
(fx1- num) -> fixnum
num := fixnum
Decrement a fixnum num by 1.
2.4.5 fxshift
(fxshift num shift) -> fixnum
num := fixnum
shift := number
Shift a fixnum num arithmetically by shift; same as fxarithmetic-shift.
2.4.6 fx/
(fx/ x y) -> fixnum
x, y := fixnum
Perform fixnum division on x and y; same as fxquotient.
2.4.7 nonnegative-fixnum?
(nonnegative-fixnum? obj) -> boolean
obj := any object
Returns true if the object obj is a non-negative fixnum.