/ -- r7rs Definition procedure;
Procedure variants:
((number-not-zero-not-nan) -> (number-not-zero-not-nan))
number-not-zero-not-nan;number-not-zero-not-nan;((number-not-nan number-not-zero-not-nan |1...|) -> (number))
number-not-nan;number-not-zero-not-nan;... -- at least one time;number;((number number-not-zero |1...|) -> (number-nan))
number;number-not-zero;... -- at least one time;number-nan;scheme:base -- (scheme base);scheme -- (scheme);Please refer to
-.