i need to emit asembly code for such thing as

aa+=12.34

where aa is float

it should be something like

movss xmm1, [aa]
addss xmm1, 12.34
movss [aa], xmm1

but i dont know "exactly" what

i also wrote a function to give me unsigned integer whis suposedly has
teh same binary form as float

unsigned FloatToUnsignedForm(float f)
{ union {
float f;
unsigned u;
} h;
h.f = f;
return h.u;
} hovever i dont checked yet if this work

i know i can check up in net for it but it may take some time
maybe someone here knows what i exactly should emit?

tnx

niedziela, 24 kwietnia 2022 o 19:44:32 UTC+2 fir napisał(a):
> i need to emit asembly code for such thing as
>
> aa+=12.34
>
> where aa is float
>
> it should be something like
>
> movss xmm1, [aa]
> addss xmm1, 12.34
> movss [aa], xmm1
>
> but i dont know "exactly" what
>
> i also wrote a function to give me unsigned integer whis suposedly has
> teh same binary form as float
>
> unsigned FloatToUnsignedForm(float f)
> {
> union {
> float f;
> unsigned u;
> } h;
> h.f = f;
> return h.u;
> }
> hovever i dont checked yet if this work
>
> i know i can check up in net for it but it may take some time
> maybe someone here knows what i exactly should emit?
>
> tnx
yet damn confusing thing is pasing floats to functions, i got some notes but im not 100%
at the moment (i mean when i tested it it worked but still im not sure )

?? txt: "assembled by fir %d ... %f ..." 0
?? floa: 123.456d

mov eax floa
mov ebx eax
add eax 4
push (eax)
push (ebx)

push (integer)
push txt
call (msvcrt.dll->printf)
pop eax
pop eax
pop eax
pop eax

such crappy code seem to work but it was searched partially blindly (chaos mode)
those integer eax values was teken from this union , possibly i should save double to t10
stright
float code i dont know as it seem more complex

// compiling expression a+=0.1
mov sd x0 (a)
mov eax -1717986918
mov (t10) eax
mov eax 1069128089
mov (t11) eax
add sd x0 (t10)
mov sd (a) x0

mov ebx a
mov eax ebx
add eax 4
push (eax)
push (ebx)

push (c)
?? str_label_2: "zz %d zz %3.3f \x00"
push str_label_2
push 100
push 30
push 16777215
call ("green_fire.dll"->DrawSomeText2)
pop eax
pop eax
pop eax
pop eax
pop eax
pop eax
pop eax
ret

On 24/04/2022 20:49, fir wrote:
> such crappy code seem to work but it was searched partially blindly (chaos mode)
>
Are you aware that this is a "comp.lang.c" newsgroup while you are
posting a running commentary about your assembler code. People will
kill-file you if this continues.

niedziela, 24 kwietnia 2022 o 22:11:51 UTC+2 undefined napisał(a):
> On 24/04/2022 20:49, fir wrote:
> > such crappy code seem to work but it was searched partially blindly (chaos mode)
> >
> Are you aware that this is a "comp.lang.c" newsgroup while you are
> posting a running commentary about your assembler code. People will
> kill-file you if this continues.

dont know, you may not realize that serious c programmers (at least in a bit older age like 2 decades ago) are programmers conscious of assembly and imo this 'edge' world between asm implementation and c belongs to c world.. nowadays im afraid the assembly goes more to distance but still i would expect c coders should know underlaying things (like calling conventions, how some things map to asm level etc)

besides even with off topics it was once discussed, some reasonable percentage of oftopics is rather good then neutal, this only the amount makes it bad .. i will probably not stay here to long, becouse if i get weary i will stop coding for another months probably

Seamus Coleman <"Seamus.Coleman@gmail.com"> writes:

> On 24/04/2022 20:49, fir wrote:
>> such crappy code seem to work but it was searched partially blindly (chaos mode)
>>
> Are you aware that this is a "comp.lang.c" newsgroup while you are
> posting a running commentary about your assembler code. People will
> kill-file you if this continues.

For most of us that ship sailed long, long ago.

poniedziałek, 25 kwietnia 2022 o 00:21:49 UTC+2 Joe Pfeiffer napisał(a):
> Seamus Coleman <"Seamus....@gmail.com"> writes:
>
> > On 24/04/2022 20:49, fir wrote:
> >> such crappy code seem to work but it was searched partially blindly (chaos mode)
> >>
> > Are you aware that this is a "comp.lang.c" newsgroup while you are
> > posting a running commentary about your assembler code. People will
> > kill-file you if this continues.
> For most of us that ship sailed long, long ago.

same as your brain

poniedziałek, 25 kwietnia 2022 o 00:49:56 UTC+2 fir napisał(a):
> poniedziałek, 25 kwietnia 2022 o 00:21:49 UTC+2 Joe Pfeiffer napisał(a):
> > Seamus Coleman <"Seamus....@gmail.com"> writes:
> >
> > > On 24/04/2022 20:49, fir wrote:
> > >> such crappy code seem to work but it was searched partially blindly (chaos mode)
> > >>
> > > Are you aware that this is a "comp.lang.c" newsgroup while you are
> > > posting a running commentary about your assembler code. People will
> > > kill-file you if this continues.
> > For most of us that ship sailed long, long ago.

> same as your brain

or rather 'their'.. its a joke i dont care who reads what i post..its a free group