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