Formatting question - PB Dos 3.5

[Robert E. Carneal]

Thanks, guys. Pat yourself on the back- I wrote my instructor
about this issue I wrote here before and she was stumped.
She had no idea!

I am sending her the correct example for her to see.

Thanks, and happy holidays everyone.

Robert

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[Arthur Gomide]

Try this

10 'Show us the problem...
20 LatVal## = 32.82736451177 :'I want LatVal$ to be 32.8273
'30 LatVal$ = USING$("00.0000",LatVal##)
'40 Print LatVal$'pbvUsingChrs = "*$.,"

PRINT FourDigits(LatVal##)    ' prints 32.8273 (without rounding)

' this function has no rounding
FUNCTION FourDigits(BYVAL X AS EXTENDED) AS STRING
    FUNCTION = STR$(INT(X*1D4)/1D4)
END FUNCTION

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Arthur Gomide
Como diria nosso profeta da bola, Dadá Maravilha: "Para toda Problemática existe uma Solucionática!"

[alan norman]

Two problems
USING$("00.0000",LatVal##)
00.0000 is not a formating string you need to use # for
character positions

30 LatVal$ =USING$("##.####",LatVal##) is the correct form
however in PBDOS this will be rounded, so the result is
32.8274 If rounding is acceptable.

to prevent rounding, take one extra number and slice it off
leaving this

10 'Show us the problem...
20 LatVal## = 32.82736451177 :'I want LatVal$ to be 32.8273
30 LatVal$ = left$(USING$("##.#####",LatVal##),7)
40 Print LatVal$

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http://www.allthingsspiny.co.uk

[Arthur Gomide]

Originally posted by Robert E. Carneal:
USING$ is still giving me a problem.

Change your line 30 to

30 LatVal$ = USING$("##.####",LatVal##)

For more examples about the use of USING$() function see the PRINT USING statement help.


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Arthur Gomide
Como diria nosso profeta da bola, Dadá Maravilha: "Para toda Problemática existe uma Solucionática!"

[This message has been edited by Arthur Gomide (edited December 28, 2006).]

[Robert E. Carneal]

USING$ is still giving me a problem. Here is what I have:

10 'Show us the problem...
20 LatVal## = 32.82736451177 :'I want LatVal$ to be 32.8273
30 LatVal$ = USING$("00.0000",LatVal##)
40 Print LatVal$


I get Error 5: Illegal function call for the error.

I sure hope I am not mis-reading the directions for this
function! I don't want any rounding, just the first four decimal
places. Thank you.

Robert

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[This message has been edited by Robert E. Carneal (edited December 28, 2006).]

[Michael Mattias]

Roger, PB/DOS 3.5 has a USING$...

[ ALT-F1 ]„Ÿ[ SHIFT-F1 ]PowerBASIC Help System
  USING$ function
  Purpose:  Formats numeric or string data like PRINT USING.

  Syntax:   s$ = USING$(format string, expression)

  expression is a numeric or string expression, and format string is a
  string expression which specifies how expression is to be formatted.
  USING$ follows exactly the same rules as the format strings in the
  PRINT USING statement, returning expression formatted according to
  format string.

What can't you do with that?

(Ok, so you can't have multiple masks for positive, negative or zero numeric variable but it's not like that is such a big thing to code...)



[This message has been edited by Michael Mattias (edited December 28, 2006).]

[Roger Garstang]

I ran into the same issue a couple weeks back. It had been like
a year since using PBDOS and I thought it had one too. Maybe there
will be one in PBDOS 4? Hope so as USING didn't do everything the
way I wanted. There have been a few other improvements in the Windows
versions of the BASIC commands/structures used in PBDOS too that would be nice.

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If you aim at nothing...you will hit it.

[Buck Huffman]

you might try USING$, it works like FORMAT$ except that the format
string is before the expression, so your code might look like:

LatV$ = Using$("##.####", LatVal)

or something like that.

buck


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[This message has been edited by Buck Huffman (edited December 18, 2006).]

[Arthur Gomide]

Originally posted by Robert E. Carneal:
can I "add-in" the function in someway?

If your LatVal variable is of type float (double-precision) you can use this function.

LetVal# = 32.34
LatV$   = fnFormat$(LetVal#,2%,4%)
PRINT LatV$			' prints '32.3400'

LetVal# = 32.123456789
LatV$   = fnFormat$(LetVal#,2%,4%)
PRINT LatV$			' prints '32.1235'

LetVal# = 1234.123456789
LatV$   = fnFormat$(LetVal#,5%,4%)
PRINT LatV$			' prints ' 1234.1235' 
                                ' note the bankers ^ rounding
                                ' effect at caret position
'from my old Turbo Basic library
DEF fnFormat$(DoubleArg#, BeforeDot%, AfterDot%)
' Esta função retorna o argumento aredondado num campo tipo #####.##
 LOCAL Temp$, Campo%
 LET Temp$ = fnEncode$(DoubleArg#, AfterDot%)
 LET Campo% = BeforeDot% + AfterDot% + 1%
 'IF LEN(Temp$) > Campo% THEN
 '   IF Campo% < 8 THEN
 '      fnFormat$ = STRING$(Campo%, CHR$(35))
 '   ELSE
 '      fnFormat$ = "Overflow!"
 '   END IF
 '   EXIT DEF
 'END IF
 WHILE LEN(Temp$) < Campo%
    LET Temp$ = CHR$(32) + Temp$
 WEND
 fnFormat$ = Temp$
END DEF 'Format$

DEF fnEncode$(Arg#, Dec%)
' esta função retorna, numa string, o valor do argumento arredondado
 LOCAL Sinal%, Ponto%, Tam%, Temp#, Temp$
 LET Sinal% = SGN(Arg#)
 IF Sinal% = 0% THEN
    fnEncode$ = " 0." + STRING$(Dec%, "0")
    EXIT DEF
 END IF
 LET Temp# = ABS(Arg#)
 IF Temp# >= 1d16 THEN
    fnEncode$ = STR$(Arg#)
    EXIT DEF
 END IF
 LET Temp$ = STR$(Temp# * EXP10(Dec%) + .5#)
 LET Temp$ = RIGHT$(Temp$, LEN(Temp$) - 1%)
 LET Ponto% = INSTR(Temp$, ".")
 IF Ponto% <> 0% THEN LET Temp$ = LEFT$(Temp$, Ponto% - 1%)
 IF Temp$ = "" THEN LET Temp$ = "0"
 WHILE LEN(Temp$) < Dec%
    LET Temp$ = "0" + Temp$
 WEND
 LET Tam% = LEN(Temp$)
 IF Tam% = Dec% THEN
    LET Temp$ = "0." + Temp$
 ELSE
    IF Dec% <> 0% THEN LET Temp$ = LEFT$(Temp$, Tam% - Dec%) + "." + RIGHT$(Temp$, Dec%)
 END IF
 IF Sinal% < 0% THEN LET Temp$ = "-" + Temp$ 'ELSE LET Temp$ = " " + Temp$
 fnEncode$ = Temp$
END DEF 'Encode$

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Arthur Gomide
Como diria nosso profeta da bola, Dadá Maravilha: "Para toda Problemática existe uma Solucionática!"



[This message has been edited by Arthur Gomide (edited December 18, 2006).]

[Bob Zale]

I think that PRINT USING will do just what you want.

Best regards,

Bob Zale
PowerBASIC Inc.


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[Robert E. Carneal]

I thought PB (Dos)had a FORMAT command? That is, if I have the
following:

input #1, LatVal :' We will assume the value is 32.34
LatV$ = Format$(LatVal,"00.0000") :'Now LatVal$ contains 32.3400

'next time around, when I read the next record, I might see:
input #1, LatVal :' Assume LatVal = 32.123456789
LatV$ = Format$(LatVal,"00.0000")

In the last case, I want LatV$ to be 32.1234, four decimal
places. I could multiply the value by 10,000, take the INT
of it, and then divide so it gets the decimal portion back, but
I was hoping for a more accurate way.

If PB (dos) does not have this function, can I "add-in" the
function in someway?

Thanks.

Robert

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