add exponent reading ..e+.., ..e-..

git-svn-id: svn://kolibrios.org@7615 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/info3ds/info_fun_float.inc

@@ -39,9 +39,10 @@ Data_BCD      DT ?
 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 ?
 
-
-db 0 ;㪠§ â¥«ì ­  ᤢ¨£ ¢ ¯ ¬ïâ¨
+align 4
 ; ‘âப  ¤«ï åà ­¥­¨ï ç¨á«  ¢ ª®¤¥ ASCII
 Data_String   DB 32 DUP (?)
 
@@ -75,8 +76,7 @@ DoubleFloat_to_String:
 	je	.NoShifts     ;­¥â æ¨äà ¯®á«¥ § ¯ï⮩
 	jl	.Error	      ;®è¨¡ª 
 	dec	BX
-	shl	BX, 3		;㬭®¦ ¥¬ ­  8
-	add	EBX, MConst
+	lea ebx,[MConst+8*ebx]
 	fmul	qword [EBX] ;㬭®¦¨âì ­  ª®­áâ ­âã
 .NoShifts:
 	; ˆ§¢«¥çì ç¨á«® ¢ ª®¤¥ BCD
@@ -197,36 +197,37 @@ String_to_DoubleFloat:
 	mov  word [Data_BCD+8],0
 	; Žç¨é ¥¬ ¡ ©â §­ ª 
 	mov	[Data_Sign],0
-	; ‡ ­®á¨¬ ¢ SI 㪠§ â¥«ì ­  áâபã
-	mov	ESI, Data_String
+	; ‡ ­®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
+	cmp	al,' '
+	jne .ShiftIgnoreEnd
+	loop .ShiftIgnore
+	jmp .Error
 align 4
 .ShiftIgnoreEnd:
 	; <EFBFBD>஢¥à塞 §­ ª ç¨á« 
-	cmp	AL,'-'
+	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¨
+	xor	edx,edx	      ;¯®§¨æ¨ï â®çª¨
 	mov	ecx,18	      ;¬ ªá. ç¨á«® à §à冷¢
+align 4
 .ASCIItoBCDConversion:
-	cmp	AL,'.'	      ;â®çª ?
+	cmp	al,'.'	      ;â®çª ?
 	jne	.NotDot
 	cmp	[Data_Flag],0 ;â®çª  ­¥ ¢áâà¥ç « áì?
-	jne	.Error
+	jne	.Error        ;¥á«¨ â®çª  㦥 ¡ë« 
 	mov	[Data_Flag],1
 	lodsb
-	cmp	AL,0	      ;ª®­¥æ áâப¨?
-	jne	.NotDot
+	or al,al	      ;ª®­¥æ áâப¨?
+	jnz	.NotDot
 	jmp	.ASCIItoBCDConversionEnd
 align 4
 .NotDot:
@@ -234,71 +235,146 @@ align 4
 	; ¥á«¨ ®­  ¥é¥ ­¥ ¢áâà¥ç « áì
 	cmp	[Data_Flag],0
 	jnz	.Figures
-	inc	DX
+	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'
+	cmp	al,'0'
 	jb	.Error
-	cmp	AL,'9'
+	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
+	and	al,15 ;ᨬ¢®«ë 0-9 ¯¥à¥¢®¤¨¬ ¢ ç¨á«®
+	or	byte [Data_BCD],al
 	; <EFBFBD>஢¥àª  ­  ª®­¥æ áâப¨
-	cmp	byte [ESI],0
+	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
+	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
+	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
+	loop .ASCIItoBCDConversion ;¥á«¨ ­¥ ª®¬¯¨«. â® ¯®áâ ¢¨âì dec ecx, jnz ...
 	; …᫨ 19-© ᨬ¢®« ­¥ 0 ¨ ­¥ â®çª ,
 	; â® ®è¨¡ª  ¯¥à¥¯®«­¥­¨ï
-	cmp	AL,'.'
+	cmp	al,'.'
 	jne	.NotDot2
-	inc	ecx
+	inc	ecx ;¯à®¯ã᪠â®çª¨ ¢ ª®­æ¥ ®ç¥­ì ¡®«ì讣® ç¨á« 
 	lodsb
 .NotDot2:
-	cmp	AL,0
-	jne	.Error ;¯¥à¥¯®«­¥­¨¥ à §à來®© á¥âª¨
+	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
+	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
-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]
+	; ‚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]