number-not-zero -- r7rs Type real-not-zero;rational-not-zero;integer-not-zero;exact-integer-not-zero;complex-not-zero-not-nan;real-not-zero-not-nan;number-positive;number-positive-not-inf;real-positive;real-positive-not-inf;rational-positive;integer-positive;exact-integer-positive;number-negative;number-negative-not-inf;real-negative;real-negative-not-inf;rational-negative;integer-negative;exact-integer-negative;range-length-not-zero;/;number?;integer?;real?;rational?;complex?;exact?;inexact?;exact-integer?;zero?;=;+;-;*;expt;square;inexact;sqrt;exp;log;sin;cos;tan;asin;acos;atan;number->string;<;<=;>=;>;Note: These definitions consume an input that is a super-type.
(lambda (value) (and (number? value) (not (zero? value))))