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OS/2 Shareware BBS: 10 Tools
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wunderki.zip
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SF48.ASM
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Assembly Source File
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1993-08-16
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2KB
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125 lines
; *******************************************************
; * *
; * Turbo Pascal Run-time Library *
; * Real Str/Val Routines *
; * *
; * Copyright (c) 1988,92 Borland International *
; * *
; *******************************************************
TITLE SF48
INCLUDE SE.ASM
CODE SEGMENT BYTE PUBLIC
ASSUME CS:CODE
; Externals
EXTRN Real2Str:NEAR,Str2Real:NEAR
; Publics
PUBLIC StrReal,ValReal
; Convert real to string
; In [SP+10] = Real value
; [SP+8] = Field width
; [SP+6] = Decimal count
; [SP+2] = String pointer
; [SP] = Maximum length
; Out SP = SP+16
StrReal:
ARG Value,BYTE,6
ARG Width,WORD,1
ARG Decimals,WORD,1
ARG StrP,DWORD,1
ARG StrLen,WORD,1
LOC NumStr,BYTE,64
ENTRY FAR
MOV AX,Value.w0
MOV BX,Value.w2
MOV DX,Value.w4
MOV CX,Decimals
OR CX,CX
JNS @@0
MOV CX,6
SUB CX,Width
CMP CX,-2
JLE @@0
MOV CX,-2
@@0: LEA DI,NumStr
PUSH SS
POP ES
CALL Real2Str
PUSH DS
MOV SI,DI
PUSH SS
POP DS
LES DI,StrP
MOV DX,StrLen
MOV AX,Width
CMP AX,DX
JLE @@1
MOV AX,DX
@@1: CMP CX,DX
JLE @@2
MOV CX,DX
@@2: CMP AX,CX
JGE @@3
MOV AX,CX
@@3: CLD
STOSB
SUB AX,CX
JE @@4
PUSH CX
MOV CX,AX
MOV AL,' '
REP STOSB
POP CX
@@4: REP MOVSB
POP DS
EXIT
; Convert string to real
; In [SP+4] = String pointer
; [SP] = Error variable pointer
; Out R1 = Value
; SP = SP+8
ValReal:
ARG StrP,DWORD,1
ARG ErrPosP,DWORD,1
ENTRY FAR
LES DI,StrP
MOV CL,ES:[DI]
XOR CH,CH
INC DI
JCXZ @@2
@@1: CMP BYTE PTR ES:[DI],' '
JNE @@2
INC DI
LOOP @@1
@@2: CALL Str2Real
JC @@3
JCXZ @@4
@@3: MOV CX,DI
SUB CX,StrP.ofs
XOR AX,AX
XOR BX,BX
XOR DX,DX
@@4: LES DI,ErrPosP
MOV ES:[DI],CX
EXIT
CODE ENDS
END