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0c01e81393
kolibrios/programs/develop/info3ds/info_fun_float.inc
IgorA 0c01e81393 add exponent reading ..e+.., ..e-.. 
git-svn-id: svn://kolibrios.org@7615 a494cfbc-eb01-0410-851d-a64ba20cac60
2019-03-21 20:08:47 +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 ?
; ‡­ ª १ã«ìâ â  - 0 ¤«ï ..e+.. ¨ 1 ¤«ï ..e-..
Data_Sign_Exp DB ?
align 4
; ‘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. *
;*******************************************************
align 4
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
lea ebx,[MConst+8*ebx]
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¨
align 4
.N4: rep movsb
jmp .End
; Žè¨¡ª 
align 4
.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¨
align 4
.Overflow:
mov AL,'#'
stosb
xor AL,AL
stosb
; Š®­¥æ ¯à®æ¥¤ãàë
align 4
.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®¤¥. *
;****************************************************
align 4
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¨¬ ¢ esi 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
align 4
.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¨
xor edx,edx ;¯®§¨æ¨ï â®çª¨
mov ecx,18 ;¬ ªá. ç¨á«® à §à冷¢
align 4
.ASCIItoBCDConversion:
cmp al,'.' ;â®çª ?
jne .NotDot
cmp [Data_Flag],0 ;â®çª  ­¥ ¢áâà¥ç « áì?
jne .Error ;¥á«¨ â®çª  㦥 ¡ë« 
mov [Data_Flag],1
lodsb
or al,al ;ª®­¥æ áâப¨?
jnz .NotDot
jmp .ASCIItoBCDConversionEnd
align 4
.NotDot:
; “¢¥«¨ç¨âì ­  1 §­ ç¥­¨¥ ¯®§¨æ¨¨ â®çª¨,
; ¥á«¨ ®­  ¥é¥ ­¥ ¢áâà¥ç « áì
cmp [Data_Flag],0
jnz .Figures
inc edx
.Figures:
cmp al,'e'
je .exp_form
cmp al,'E'
jne @f
.exp_form:
call string_ExpForm ;¥á«¨ ç¨á«® ¢ ä®à¬ â¥ ..e..
or al,al
jnz .Error
jmp .ASCIItoBCDConversionEnd
@@:
; ‘¨¬¢®«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,15 ;ᨬ¢®«ë 0-9 ¯¥à¥¢®¤¨¬ ¢ ç¨á«®
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 ;¥á«¨ ­¥ ª®¬¯¨«. â® ¯®áâ ¢¨âì dec ecx, jnz ...
; …᫨ 19-© ᨬ¢®« ­¥ 0 ¨ ­¥ â®çª ,
; â® ®è¨¡ª  ¯¥à¥¯®«­¥­¨ï
cmp al,'.'
jne .NotDot2
inc ecx ;¯à®¯ã᪠â®çª¨ ¢ ª®­æ¥ ®ç¥­ì ¡®«ì讣® ç¨á« 
lodsb
.NotDot2:
or al,al ;¯¥à¥¯®«­¥­¨¥ à §à來®© á¥âª¨?
jz .ASCIItoBCDConversionEnd
align 4
.Error: ; <EFBFBD>ਠ«î¡®© ®è¨¡ª¥ ®¡­ã«¨âì १ã«ìâ â
fldz ;§ ­¥á⨠­®«ì á á⥪ ᮯà®æ¥áá®à 
fstp [Data_Double]
jmp .End
; <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 ¨«¨ ¬­®¦¨â¥«ï
lea ebx,[ecx+edx-18]
cmp ebx,0
jle .NoMul ;¥á«¨ ç¨á«® e-..
dec ebx
jz .NoDiv ;¥á«¨ ç¨á«® e+0
dec ebx
lea ebx,[MConst+8*ebx]
fmul qword [ebx] ;㬭®¦¨âì ­  ª®­áâ ­âã (¤«ï ç¨á¥« á ¯à¨áâ ¢ª®© e+..)
jmp .NoDiv
.NoMul:
neg ebx
lea ebx,[MConst+8*ebx]
fdiv qword [ebx] ;à §¤¥«¨âì ­  ª®­áâ ­âã
.NoDiv: ;‚ë£à㧨âì ç¨á«® ¢ ¤¢®¨ç­®¬ ä®à¬ â¥
fstp [Data_Double]
.End:
popad
ret
;output:
; eax - 1 if error
; edx += size
align 4
proc string_ExpForm uses ebx
mov [Data_Sign_Exp],0
xor eax,eax
lodsb
cmp al,'+'
jne @f
lodsb
@@:
cmp al,'-'
jne @f
inc [Data_Sign_Exp]
lodsb
@@:
xor ebx,ebx
.cycle0:
cmp al,0
je .cycle0end
cmp al,9
je .cycle0end
cmp al,10
je .cycle0end
cmp al,13
je .cycle0end
cmp al,' '
je .cycle0end
cmp al,'0'
jb .Error
cmp al,'9'
ja .Error
imul ebx,10
and eax,15 ;ᨬ¢®«ë 0-9 ¯¥à¥¢®¤¨¬ ¢ ç¨á«®
add ebx,eax
lodsb
jmp .cycle0
.cycle0end:
cmp [Data_Sign_Exp],0
je @f
neg ebx
@@:
cmp [Data_Flag],0 ;â®çª  ­¥ ¢áâà¥ç « áì?
jne @f
dec edx
@@:
add edx,ebx
xor eax,eax
jmp @f
.Error:
xor eax,eax
inc eax
@@:
ret
endp
align 4
proc str_cat uses eax ecx edi esi, str1:dword, str2:dword
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
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
align 4
proc String_crop_0 uses eax ebx ecx edi
mov edi,Data_String
mov al,'.'
mov ecx,32
repne scasb
mov ebx,edi
mov edi,Data_String
xor al,al
mov ecx,32
repne scasb
cmp ebx,edi
jg .end_f
dec edi
.cycle0:
dec edi
cmp edi,Data_String
jle .end_f
cmp byte[edi],'0'
jne .cycle0end
mov byte[edi],0
jmp .cycle0
.cycle0end:
cmp byte[edi],'.'
jne .end_f
mov byte[edi],0
.end_f:
ret
endp
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