Function Entry: ZEROP

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Function Entry: ZEROP

Name

zerop

Class

Function

Syntax

(zerop number)

Description

Tests whether a number is zero.

Return Values

T if the number is zero
nil otherwise

Side Effects

None.

Availability

AutoCAD 2026: documented (per Autodesk reference page).
BricsCAD V26: presumed compatible (no contradicting page found).
Status: AutoCAD documented; BricsCAD presumed-both pending Phase 4 verification.

Source Notes

[Arithmetic Functions Reference (AutoLISP)](https://help.autodesk.com/cloudhelp/2026/FRA/AutoCAD-AutoLISP-Reference/files/GUID-FC14467C-63B9-4400-8C6A-266D21C846AE.htm)
Status: documented by Autodesk's arithmetic reference table.