number-positive-or-zero
-- r7rs
Type number-zero
;complex-zero
;real-zero
;rational-zero
;integer-zero
;exact-integer-zero
;number-positive-not-inf
;real-positive
;real-positive-not-inf
;rational-positive
;integer-positive
;exact-integer-positive
;real-positive-or-zero-not-inf
;rational-positive-or-zero
;integer-positive-or-zero
;exact-integer-positive-or-zero
;code-point-unicode
;code-point-ascii
;range-value
;range-offset
;range-start
;range-end
;range-length
;range-length-zero
;range-length-not-zero
;byte
;byte-ascii
;(lambda (value) (and (number? value) (or (positive? value) (zero? value))))