Function Entry: 1+

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Function Entry: 1+

Name

1+

Class

Function

Syntax

(1+ number)

Arguments and Values

number: integer or real.

Description

Increments number by 1.

Return Values

The input number plus 1. Return type matches input type: integer for integer input, real for real input.

Side Effects

None.

Examples

(1+ 5) returns 6.
(1+ -17.5) returns -16.5.

Availability

AutoCAD 2026: documented.
BricsCAD V26: presumed compatible.
Status: AutoCAD documented; BricsCAD presumed-both pending Phase 4 verification.

Source Notes

[1+ (AutoLISP 2026)](https://help.autodesk.com/cloudhelp/2026/ENU/AutoCAD-AutoLISP-Reference/files/GUID-EF06615A-5BE5-4A86-96CF-643B0712E43A.htm)
Status: documented (Phase 3 body fill).