@stdlib/math-base-assert-is-nonpositive-integer (npm): Test if a finite double-precision floating-point number is a nonpositive integer.
Keywords: stdlib|stdmath|assertion|assert|utilities|utility|utils|util|math|mathematics|nonpositive|negative|integer|number|int|is|isinteger|isint|type|check|double|dbl|javascript|node|node-js|nodejs