AddLong
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;* AddLong - Adds two double-word (long) integers.
;*
;* Shows: Instructions - add adc
;*
;* Params: long1 - First integer
;* long2 - Second integer
;*
;* Return: Sum as long integer
AddLong PROC \
long1:DWORD, long2:DWORD
mov ax, WORD PTR long1[0] ; AX = low word, long1
mov dx, WORD PTR long1[2] ; DX = high word, long1
add ax, WORD PTR long2[0] ; Add low word, long2
adc dx, WORD PTR long2[2] ; Add high word, long2
ret ; Result returned as DX:AX
AddLong ENDP
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