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Index > Main > How create float structure ? Lets say df.

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Roman



Joined: 21 Apr 2012
Posts: 519
Roman
Fasm 1.73 have db, dw, dd ,dq, du
I want create df macro or struct. I'm so tired write after digits '.0'
Code:
df 1,2,3,34,5,26

And we get float 1.0,2.0,3.0,34.0,5.0,26.0
    


How do this ?

And i found interesting code:
Code:
struc dt [arg] {
  if arg eqtype 1.0
    dt arg
  else
    match sign value,arg {
      match =INF,value { dq $8000000000000000 \\}
      match =NaN,value { dq $C000000000000001 \\}
      dw $7FFF - (sign $4000 - $4000) \}
  end if }
    

I think this code write only in macro but not in struct.


Last edited by Roman on 20 Jan 2019, 21:36; edited 1 time in total
Post 20 Jan 2019, 09:52
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ProMiNick



Joined: 24 Mar 2012
Posts: 394
Location: Russian Federation, Sochi
ProMiNick
Roman, thou found my code.
Code:
struc dt [arg] {
  label . tword ; add this for correcteness
  if arg eqtype 1.0
    dt arg
  else if arg eqtype 1; may be this helps
   dt arg#.0
  else
    match sign value,arg {
      match =INF,value { dq $8000000000000000 \\}
      match =NaN,value { dq $C000000000000001 \\} ; NaN is big range of values, and it is useless in practic (Infinity useless too)
      dw $7FFF - (sign $4000 - $4000) \}
  end if 
  ;if thou define table it is enought, but for single tbyte may be "dw ?" needed for alignment after it
}    


alternative:
Code:
Inf equ -$4000+$4000+$7FFF:$8000000000000000
NaN equ Inf or    

use case
Code:
dt Inf,+Inf,-Inf,+NaN(Index),-NaN(Index); where Index - any value from 1 to $7FFFFFFFFFFFFFFF    


Last edited by ProMiNick on 25 Jan 2019, 08:24; edited 2 times in total
Post 20 Jan 2019, 11:15
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Roman



Joined: 21 Apr 2012
Posts: 519
Roman
Yes. I found on site KalibriOS.
ProMiNick did you been on GD.ru ?
Post 20 Jan 2019, 14:03
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l4m2



Joined: 15 Jan 2015
Posts: 648
l4m2
Code:
macro df [x] {
forward
        dq x#.0
}     
Only allow take input integer
Post 08 Feb 2019, 04:11
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