printnonpositive

Printnonpositive is a term used in programming and data processing to refer to the operation of outputting elements from a sequence that are nonpositive, i.e., numbers that are less than or equal to zero. In mathematics, a nonpositive number is any number that is zero or negative.

Usage and behavior: It is typically implemented as a filter or loop that iterates over a collection and outputs items that satisfy the condition x <= 0. The function may be written as part of a library or as ad hoc code in scripts. Variants include printing only negative numbers (x < 0) or printing including zero (x <= 0). Output can go to the console, a file, or be collected into another data structure.

Example (pseudo Python):

def printnonpositive(values):

for v in values:

if v <= 0:

print(v)

Considerations: Non-numeric values may require filtering or error handling. In floating point contexts, NaN is not comparable, so NaN <= 0 is typically false; languages differ. Some implementations may collect qualifying values rather than printing them directly. In data analysis, printnonpositive can help identify zero or negative measurements that require attention.

See also: nonpositive numbers; data filtering; input validation.