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last edited 10 years ago by test1 |
Edit detail for #324 Bug in width$OutputForm revision 2 of 4
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Editor: kratt6
Time: 2007/12/20 02:02:14 GMT-8 |
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| Note: give more details | ||
changed: -In 'OutputForm' there is a function 'width' that returns the amount of space taken by some element of 'OutputForm'. For example In 'OutputForm' there is a function 'width' that returns the amount of space taken by some element of 'OutputForm' when printed as ASCII. For example added: )se ou alg on )se ou tex off sin x added: x^2 added: \end{axiom} I would expect 2 here. \begin{axiom} 1/2 added: I would expect 1 here. added: It would be good to have a similar function for TeX output, by the way.
In OutputForm there is a function width that returns the amount of space taken by some element of OutputForm when printed as ASCII. For example
axiom
)se ou alg on
axiom
)se ou tex off
sin x
(1) sin(x)
Type: Expression(Integer)
axiom
width((sin x)::OutputForm)$OutputForm
(2) 6
Type: Integer
However, the width for squares and fractions seems to be wrong:
axiom
x^2
2 (3) x
Type: Polynomial(Integer)
axiom
width((x^2)::OutputForm)$OutputForm
(4) 5
Type: Integer
I would expect 2 here.
axiom
1/2
1 (5) - 2
Type: Fraction(Integer)
axiom
width((1/2)::OutputForm)$OutputForm
(6) 5
Type: Integer
I would expect 1 here.
The function is unfortunately not implemented in SPAD but rather calls outformWidth coded in BOOT in the
file i-output.boot.
It would be good to have a similar function for TeX? output, by the way. Martin