Is it possible to make alternative macro?

[daydreamer]

Alternative macro similar to. If. Else.endif
But when using test different bits?

[HSE]

No problem, I think.

See Hutch's macros in masm64.

More powerful, and complex, are Mabdelouabad macros.

[jj2007]

Code: [Select]

include \masm32\include\masm32rt.inc ; plain Masm32 for the fans of pure assembler

.code

start:
  mov eax, 3
  .if eax & 4
inkey "bit 2 is set"
  .else
inkey "bit 2 is not set"
  .endif
exit

end start

[HSE]

Here I'm using "cmp", but you can modify macros and use "test". Hutch's macros are more clear but you can make only 20 levels  , with this You can use any number of levels.

This are simplified macros:

Code: [Select]

__if_ttt_n0 = 0
__if_ttt_level = 0

__if_ttt_resuelve macro m1, a1, a2
% &m1
% cmp &a1, 0
ifnb <&a2>
jg @CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level,%__if_ttt_n1)
else
je @CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level,%__if_ttt_n1)
endif
endm

@if macro m1, a1, a2
if __if_ttt_level eq 0
__if_ttt_n0 = __if_ttt_n0 + 1
endif
__if_ttt_level = __if_ttt_level + 1
__if_ttt_n1 = 0
__if_ttt_resuelve <&m1>, &a1, &a2
endm

@elseif macro m1, a1, a2
jmp @CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level)
@CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level,%__if_ttt_n1,<:>)
;% &m1

__if_ttt_n1 = __if_ttt_n1 + 1
__if_ttt_resuelve <&m1>,&a1, &a2

endm

@else macro
jmp @CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level)
@CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level,%__if_ttt_n1,<:>)
__if_ttt_n1 = __if_ttt_n1 + 1
endm

    __if_ttt_setEnd macro
        @CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level,<:>)
    endm
@endif macro
@CatStr(__if_ttt_,%__if_ttt_n0,<_>,%__if_ttt_level,%__if_ttt_n1,<:>)
__if_ttt_setEnd
if __if_ttt_level gt 0
__if_ttt_level = __if_ttt_level - 1
endif
endm

Must be used:

Code: [Select]

        mov eax, clipUnion
        and eax, POLYGON_CLIP_RIGHT
        ;int 3
            @if <>, eax
                     ***************
    cond1 macro
           DbgText "test 2"
   mov eax, clipUnion
   and eax, POLYGON_CLIP_LEFT
   ;int 3
    endm

            @elseif <cond1>, eax
                    ************************

            cond1 macro
                mov eax, POLYGON_CLIP_RIGHT
            or eax, POLYGON_CLIP_LEFT
            and eax, clipSum 
            endm
            @elseif <cond1>, eax, 0
                   **************     

           @else
                ************
            @endif




A more complex thing using Mabdelouahab's macros is in if-elseif Mab's macros for floating comparisons

PD: just in case. The smile about 20 levels is that is a lot  I think I used at most 6 levels.

[daydreamer]

thanks JJ,Hector
polygonclip code,why not SSE solution?
its similar solution to packed compare which returns either FFFF or zero which you can shift and use AND,OR,XOR to check .IF variable>left and variable<right
 

[HSE]

  Just a translation from C++.

[daydreamer]

Just a translation from C++.

That's the usual approach to learn some new algo
First you research and find some hll example, first get it working right
After that optimize when you understand how it works

[Vortex]

Alternative macro similar to. If. Else.endif
But when using test different bits?

Why would you need alternative macros?

[daydreamer]

Alternative macro similar to. If. Else.endif
But when using test different bits?

Why would you need alternative macros?

thanks to JJ I dont need bit testing macro