.ERRDIF/.ERRDIFI (Error if Arguments are Different)

The .ERRDIF and .ERRDIFI directives generate an assembler error if the two Text-Arguments are different.

Syntax

.ERRDIF Text-Argument-1, Text-Argument-2
   or
.ERRDIFI Text-Argument-1, Text-Argument-2

Remarks

The .ERRDIF directive performs a case-sensitive comparision, and the .ERRDIFI directive performs a case-insensitive comparision.

Example

In this example, a check is made to verify that the currently opened segment is _TEXT. This helps to insure that the macro is used only from within the default near code segment, and not from a program with a memory model that uses far code pointers (MEDIUM, LARGE, or HUGE).

RETURN MACRO
    ;; Use the expansion operator (%) to resolve @CurSeg equate
    % .errdif <_TEXT>,<@CurSeg>  ;; Must be in near .CODE segment
    RETN                         ;; Force a near return
ENDM

---

[Back: .ERRDEF/.ERRNDEF (Error if Symbol Defined/Not Defined)]
[Next: .ERRE/.ERRNZ (Error if Expression False/True)]