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kolibrios/programs/develop/info3ds/info_fun_float.inc
IgorA fcc6c62880 fix function 'DoubleFloat_to_String' 
git-svn-id: svn://kolibrios.org@2254 a494cfbc-eb01-0410-851d-a64ba20cac60
2011-10-01 09:54:26 +00:00

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;
; ä㭪樨 ¤«ï à ¡®âë á ç¨á« ¬¨ float
;
; Š®«¨ç¥á⢮ §­ ª®¢ ç¨á«  ¯®á«¥ § ¯ï⮩ (1-17)
NumberSymbolsAD DW 5
; Š®­áâ ­âë (10 ¢ á⥯¥­¨ N)
MConst DQ 1.0E1,1.0E2,1.0E3,1.0E4,1.0E5
DQ 1.0E6,1.0E7,1.0E8,1.0E9,1.0E10
DQ 1.0E11,1.0E12,1.0E13,1.0E14,1.0E15
DQ 1.0E16,1.0E17,1.0E18,1.0E19,1.0E20
DQ 1.0E21,1.0E22,1.0E23,1.0E24,1.0E25
DQ 1.0E26,1.0E27,1.0E28,1.0E29,1.0E30
DQ 1.0E31,1.0E32,1.0E33,1.0E34,1.0E35
DQ 1.0E36,1.0E37,1.0E38,1.0E39,1.0E40
DQ 1.0E41,1.0E42,1.0E43,1.0E44,1.0E45
DQ 1.0E46,1.0E47,1.0E48,1.0E49,1.0E50
DQ 1.0E51,1.0E52,1.0E53,1.0E54,1.0E55
DQ 1.0E56,1.0E57,1.0E58,1.0E59,1.0E60
DQ 1.0E61,1.0E62,1.0E63,1.0E64,1.0E65
DQ 1.0E66,1.0E67,1.0E68,1.0E69,1.0E70
DQ 1.0E71,1.0E72,1.0E73,1.0E74,1.0E75
DQ 1.0E76,1.0E77,1.0E78,1.0E79,1.0E80
DQ 1.0E81,1.0E82,1.0E83,1.0E84,1.0E85
DQ 1.0E86,1.0E87,1.0E88,1.0E89,1.0E90
DQ 1.0E91,1.0E92,1.0E93,1.0E94,1.0E95
DQ 1.0E96,1.0E97,1.0E98,1.0E99,1.0E100
DQ 1.0E101,1.0E102,1.0E103,1.0E104,1.0E105
DQ 1.0E106,1.0E107,1.0E108,1.0E109,1.0E110
DQ 1.0E111,1.0E112,1.0E113,1.0E114,1.0E115
DQ 1.0E116,1.0E117,1.0E118,1.0E119,1.0E120
DQ 1.0E121,1.0E122,1.0E123,1.0E124,1.0E125
DQ 1.0E126,1.0E127,1.0E128
; —¨á«® á ¯« ¢ î饩 § ¯ï⮩ ¤¢®©­®© â®ç­®áâ¨
Data_Double DQ ?
; —¨á«® ¢ BCD-ä®à¬ â¥
Data_BCD DT ?
; ‚ᯮ¬®£ â¥«ì­ë© ä« £
Data_Flag DB ?
; ‡­ ª १ã«ìâ â  (¥á«¨ ­¥ 0 - ®âà¨æ â¥«ì­®¥ ç¨á«®)
Data_Sign DB ?
db 0 ;㪠§ â¥«ì ­  ᤢ¨£ ¢ ¯ ¬ïâ¨
; ‘âப  ¤«ï åà ­¥­¨ï ç¨á«  ¢ ª®¤¥ ASCII
Data_String DB 32 DUP (?)
;*******************************************************
;* <EFBFBD><EFBFBD>…Ž<EFBFBD><EFBFBD>€‡Ž‚€<EFBFBD>ˆ… —ˆ‘‹€ ‘ <EFBFBD>‹€‚€ž™…‰ ‡€<EFBFBD>Ÿ’Ž‰ ‚ ‘’<EFBFBD>ŽŠ“ *
;* —¨á«® ¨¬¥¥â ä®à¬ â á 㤢®¥­­®© â®ç­®áâìî, १ã«ìâ â *
;* ¢ë¤ ¥âáï ¢ ¤¥áïâ¨ç­®¬ ª®¤¥, ¢ "¡ë⮢®¬" ä®à¬ â¥ á *
;* 䨪á¨à®¢ ­­ë¬ ª®«¨ç¥á⢮¬ §­ ª®¢ ¯®á«¥ § ¯ï⮩. *
;* ‚室­ë¥ ¯ à ¬¥âàë: *
;* Data_Double - ¯à¥®¡à §ã¥¬®¥ ç¨á«®; *
;* NumberSymbolsAD - ª®«¨ç¥á⢮ §­ ª®¢ ¯®á«¥ *
;* § ¯ï⮩ (0-17). *
;* ‚ë室­ë¥ ¯ à ¬¥âàë: *
;* Data_String - áâப -१ã«ìâ â. *
;*******************************************************
DoubleFloat_to_String:
pushad
; <EFBFBD>¥§ã«ìâ â § ¯¨á뢠âì ¢ áâபã Data_String
mov EDI, Data_String
; ‘¤¢¨£ ¥¬ ç¨á«® ¢«¥¢® ­  NumberSymbolsAD
; ¤¥áïâ¨ç­ëå à §à冷¢
fninit ;á¡à®á ᮯà®æ¥áá®à 
fld [Data_Double] ;§ £à㧨âì ç¨á«®
xor ebx,ebx
mov BX,[NumberSymbolsAD]
cmp BX, 0
je .NoShifts ;­¥â æ¨äà ¯®á«¥ § ¯ï⮩
jl .Error ;®è¨¡ª 
dec BX
shl BX, 3 ;㬭®¦ ¥¬ ­  8
add EBX, MConst
fmul qword [EBX] ;㬭®¦¨âì ­  ª®­áâ ­âã
.NoShifts:
; ˆ§¢«¥çì ç¨á«® ¢ ª®¤¥ BCD
fbstp [Data_BCD]
; <EFBFBD>஢¥à¨âì १ã«ìâ â ­  ¯¥à¥¯®«­¥­¨¥
mov AX,word [Data_BCD + 8]
cmp AX,0FFFFh ;"¤¥áïâ¨ç­®¥" ¯¥à¥¯®«­¥­¨¥?
je .Overflow
; ‚뤥«¨âì §­ ª ç¨á«  ¨ § ¯¨á âì ¥£® ¢ ASCII-ª®¤¥
mov AL, byte [Data_BCD + 9]
and AL,AL
jz .NoSign
mov AL,'-'
stosb
.NoSign:
; <EFBFBD> á¯ ª®¢ âì ç¨á«® ¢ ª®¤ ASCII
mov ebx,8 ;ᬥ饭¨¥ ¯®á«¥¤­¥© ¯ àë æ¨äà
mov ecx,9 ;áç¥â稪 ¯ à æ¨äà
; Ž¯à¥¤¥«¨âì ¯®§¨æ¨î ¤¥áïâ¨ç­®© â®çª¨ ¢ ç¨á«¥
mov DX,18
sub DX,[NumberSymbolsAD]
js .Error ;®è¨¡ª , ¥á«¨ ®âà¨æ â¥«ì­ ï
jz .Error ;¨«¨ ­ã«¥¢ ï ¯®§¨æ¨ï
.NextPair:
; ‡ £à㧨âì ®ç¥à¥¤­ãî ¯ àã à §à冷¢
mov AL, byte [ebx + Data_BCD]
mov AH,AL
; ‚뤥«¨âì, ¯¥à¥¢¥á⨠¢ ASCII ¨
; á®åà ­¨âì áâ àèãî â¥âà ¤ã
shr AL,4
add AL,'0'
stosb
dec DX
jnz .N0
mov AL,'.'
stosb
.N0: ; ‚뤥«¨âì, ¯¥à¥¢¥á⨠¢ ASCII ¨
; á®åà ­¨âì ¬« ¤èãî â¥âà ¤ã
mov AL,AH
and AL,0Fh
add AL,'0'
stosb
dec DX
jnz .N1
mov AL,'.'
stosb
.N1:
dec BX
loop .NextPair
mov AL,0
stosb
; “¡à âì ­¥§­ ç é¨¥ ­ã«¨ á«¥¢ 
mov EDI, Data_String
mov ESI, Data_String
; <EFBFBD>யãáâ¨âì §­ ª ç¨á« , ¥á«¨ ®­ ¥áâì
cmp byte [ESI],'-'
jne .N2
inc ESI
inc EDI
.N2: ; ‡ £à㧨âì ¢ áç¥â稪 横«  ª®«¨ç¥á⢮ à §à冷¢
; ç¨á«  ¯«îá 1 (¡ ©â ¤¥áïâ¨ç­®© â®çª¨)
mov ecx,18+1+1
; <EFBFBD>யãáâ¨âì ­¥§­ ç é¨¥ ­ã«¨
.N3:
cmp byte [ESI],'0'
jne .N4
cmp byte [ESI+1],'.'
je .N4
inc ESI
loop .N3
; Žè¨¡ª  - ­¥â §­ ç é¨å æ¨äà
jmp .Error
; ‘ª®¯¨à®¢ âì §­ ç éãî ç áâì ç¨á«  ¢ ­ ç «® áâப¨
.N4: rep movsb
jmp .End
; Žè¨¡ª 
.Error:
mov AL,'E'
stosb
mov AL,'R'
stosb
mov AL,'R'
stosb
xor AL,AL
stosb
jmp .End
; <EFBFBD>¥à¥¯®«­¥­¨¥ à §à來®© á¥âª¨
.Overflow:
mov AL,'#'
stosb
xor AL,AL
stosb
; Š®­¥æ ¯à®æ¥¤ãàë
.End:
popad
ret
;****************************************************
;* <EFBFBD><EFBFBD>…Ž<EFBFBD><EFBFBD>€‡Ž‚€’œ ‘’<EFBFBD>ŽŠ“ ‚ —ˆ‘‹Ž ‘ <EFBFBD>‹€‚€ž™…‰ ‡€<EFBFBD>Ÿ’Ž‰ *
;* (ç¨á«® ¨¬¥¥â ®¡ëç­ë©, "¡ë⮢®©" ä®à¬ â) *
;* ‚室­ë¥ ¯ à ¬¥âàë: *
;* Data_String - ç¨á«® ¢ ª®¤¥ ASCII. *
;* ‚ë室­ë¥ ¯ à ¬¥âàë: *
;* Data_Double - ç¨á«® ¢ ¤¢®¨ç­®¬ ª®¤¥. *
;****************************************************
String_to_DoubleFloat:
pushad
cld
; Žç¨é ¥¬ Data_BCD
mov dword [Data_BCD],0
mov dword [Data_BCD+4],0
mov word [Data_BCD+8],0
; Žç¨é ¥¬ ¡ ©â §­ ª 
mov [Data_Sign],0
; ‡ ­®á¨¬ ¢ SI 㪠§ â¥«ì ­  áâபã
mov ESI, Data_String
; <EFBFBD>யã᪠¥¬ ¯à®¡¥«ë ¯¥à¥¤ ç¨á«®¬
mov ecx,64 ;§ é¨â  ®â § æ¨ª«¨¢ ­¨ï
.ShiftIgnore:
lodsb
cmp AL,' '
jne .ShiftIgnoreEnd
loop .ShiftIgnore
jmp .Error
.ShiftIgnoreEnd:
; <EFBFBD>஢¥à塞 §­ ª ç¨á« 
cmp AL,'-'
jne .Positive
mov [Data_Sign],80h
lodsb
.Positive:
mov [Data_Flag],0 ;¯à¨§­ ª ­ «¨ç¨ï â®çª¨
mov DX,0 ;¯®§¨æ¨ï â®çª¨
mov ecx,18 ;¬ ªá. ç¨á«® à §à冷¢
.ASCIItoBCDConversion:
cmp AL,'.' ;â®çª ?
jne .NotDot
cmp [Data_Flag],0 ;â®çª  ­¥ ¢áâà¥ç « áì?
jne .Error
mov [Data_Flag],1
lodsb
cmp AL,0 ;ª®­¥æ áâப¨?
jne .NotDot
jmp .ASCIItoBCDConversionEnd
.NotDot:
; “¢¥«¨ç¨âì ­  1 §­ ç¥­¨¥ ¯®§¨æ¨¨ â®çª¨,
; ¥á«¨ ®­  ¥é¥ ­¥ ¢áâà¥ç « áì
cmp [Data_Flag],0
jnz .Figures
inc DX
.Figures:
; ‘¨¬¢®«ë ç¨á«  ¤®«¦­ë ¡ëâì æ¨äà ¬¨
cmp AL,'0'
jb .Error
cmp AL,'9'
ja .Error
; <EFBFBD>¨è¥¬ ®ç¥à¥¤­ãî æ¨äàã ¢ ¬« ¤èãî â¥âà ¤ã BCD
and AL,0Fh
or byte [Data_BCD],AL
; <EFBFBD>஢¥àª  ­  ª®­¥æ áâப¨
cmp byte [ESI],0
je .ASCIItoBCDConversionEnd
; ‘¤¢¨£ ¥¬ BCD ­  4 à §à鸞 ¢«¥¢®
; (ᤢ¨£ ¥¬ áâ à訥 2 ¡ ©â )
mov AX,word [Data_BCD+6]
shld word [Data_BCD+8],AX,4
; (ᤢ¨£ ¥¬ á।­¨¥ 4 ¡ ©â )
mov EAX, dword [Data_BCD]
shld dword [Data_BCD+4],EAX,4
; (ᤢ¨£ ¥¬ ¬« ¤è¨¥ 4 ¡ ©â )
shl dword [Data_BCD],4
; ‡ £à㦠¥¬ á«¥¤ãî騩 ᨬ¢®« ¢ AL
lodsb
loop .ASCIItoBCDConversion
; …᫨ 19-© ᨬ¢®« ­¥ 0 ¨ ­¥ â®çª ,
; â® ®è¨¡ª  ¯¥à¥¯®«­¥­¨ï
cmp AL,'.'
jne .NotDot2
inc ecx
lodsb
.NotDot2:
cmp AL,0
jne .Error ;¯¥à¥¯®«­¥­¨¥ à §à來®© á¥âª¨
; <EFBFBD><EFBFBD>…Ž<EFBFBD><EFBFBD>€‡Ž‚€’œ —ˆ‘‹Ž ˆ‡ ŠŽ„€ BCD ‚ ‚…™…‘’‚…<EFBFBD><EFBFBD>Ž… —ˆ‘‹Ž
.ASCIItoBCDConversionEnd:
; ‚¯¨á âì §­ ª ¢ áâ à訩 ¡ ©â
mov AL,[Data_Sign]
mov byte [Data_BCD+9],AL
; ‘¡à®á¨âì ॣ¨áâàë ᮯà®æ¥áá®à 
fninit
; ‡ £à㧨âì ¢ ᮯà®æ¥áá®à ç¨á«® ¢ BCD-ä®à¬ â¥
fbld [Data_BCD]
; ‚ëç¨á«¨âì ­®¬¥à ¤¥«¨â¥«ï
mov EBX,18+1
sub BX,CX
sub BX,DX
cmp EBX,0
je .NoDiv
dec EBX
shl EBX,3 ;㬭®¦ ¥¬ ­  8
add EBX, MConst
fdiv qword [EBX] ;à §¤¥«¨âì ­  ª®­áâ ­âã
.NoDiv:; ‚ë£à㧨âì ç¨á«® ¢ ¤¢®¨ç­®¬ ä®à¬ â¥
fstp [Data_Double]
jmp .End
.Error:; <EFBFBD>ਠ«î¡®© ®è¨¡ª¥ ®¡­ã«¨âì १ã«ìâ â
fldz ;§ ­¥á⨠­®«ì á á⥪ ᮯà®æ¥áá®à 
fstp [Data_Double]
.End:
popad
ret
align 4
proc str_cat, str1:dword, str2:dword
push eax ecx edi esi
mov esi,dword[str2]
stdcall str_len,esi
mov ecx,eax
inc ecx
mov edi,dword[str1]
stdcall str_len,edi
add edi,eax
cld
repne movsb
pop esi edi ecx eax
ret
endp
;output:
; eax = strlen
align 4
proc str_len, str1:dword
mov eax,[str1]
@@:
cmp byte[eax],0
je @f
inc eax
jmp @b
@@:
sub eax,[str1]
ret
endp
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