7.0pt ≠ x*10.0pt for all x
Consider the following input:
documentclass{article}
begin{document}
newlength{smallertopskip}
setlength{smallertopskip}{.700004577636718749999999999999999999999999999999topskip}
newlength{largertopskip}
setlength{largertopskip}{.700004577636718750000000000000000000000000000000topskip}
Topskip: thetopskip
Smaller: thesmallertopskip
Larger: thelargertopskip
end{document}
Running pdflatex on it results in
Topskip: 10.0pt
Smaller: 6.99997pt
Larger: 7.00012pt
As you see above, I tried hard to get exactly 7pt as a result of multiplication of some floating-point constant with topskip, but failed. Sure, it's very well-known that floating-point computations are really inaccurate in TeX, but I'm wondering whether some external package could provide us with a rather general-purpose multiplication function (say, mult), which approximates the mathematical multiplication in some sense, such that
newlength{myLength}
setlength{myLength}{mult{x}{topskip}}
themyLength
(or similar code) would result in 7.0pt for some verbatim floating-point constant x assuming that topskip is 10.0pt?
lengths floating-point
asked 4 mins ago
user0user0
46019
add a comment |
Consider the following input:
documentclass{article}
begin{document}
newlength{smallertopskip}
setlength{smallertopskip}{.700004577636718749999999999999999999999999999999topskip}
newlength{largertopskip}
setlength{largertopskip}{.700004577636718750000000000000000000000000000000topskip}
Topskip: thetopskip
Smaller: thesmallertopskip
Larger: thelargertopskip
end{document}
Running pdflatex on it results in
Topskip: 10.0pt
Smaller: 6.99997pt
Larger: 7.00012pt
As you see above, I tried hard to get exactly 7pt as a result of multiplication of some floating-point constant with topskip, but failed. Sure, it's very well-known that floating-point computations are really inaccurate in TeX, but I'm wondering whether some external package could provide us with a rather general-purpose multiplication function (say, mult), which approximates the mathematical multiplication in some sense, such that
newlength{myLength}
setlength{myLength}{mult{x}{topskip}}
themyLength
(or similar code) would result in 7.0pt for some verbatim floating-point constant x assuming that topskip is 10.0pt?
lengths floating-point
asked 4 mins ago
user0user0
46019
add a comment |
Consider the following input:
documentclass{article}
begin{document}
newlength{smallertopskip}
setlength{smallertopskip}{.700004577636718749999999999999999999999999999999topskip}
newlength{largertopskip}
setlength{largertopskip}{.700004577636718750000000000000000000000000000000topskip}
Topskip: thetopskip
Smaller: thesmallertopskip
Larger: thelargertopskip
end{document}
Running pdflatex on it results in
Topskip: 10.0pt
Smaller: 6.99997pt
Larger: 7.00012pt
As you see above, I tried hard to get exactly 7pt as a result of multiplication of some floating-point constant with topskip, but failed. Sure, it's very well-known that floating-point computations are really inaccurate in TeX, but I'm wondering whether some external package could provide us with a rather general-purpose multiplication function (say, mult), which approximates the mathematical multiplication in some sense, such that
newlength{myLength}
setlength{myLength}{mult{x}{topskip}}
themyLength
(or similar code) would result in 7.0pt for some verbatim floating-point constant x assuming that topskip is 10.0pt?
lengths floating-point
asked 4 mins ago
user0user0
46019
Consider the following input:
documentclass{article}
begin{document}
newlength{smallertopskip}
setlength{smallertopskip}{.700004577636718749999999999999999999999999999999topskip}
newlength{largertopskip}
setlength{largertopskip}{.700004577636718750000000000000000000000000000000topskip}
Topskip: thetopskip
Smaller: thesmallertopskip
Larger: thelargertopskip
end{document}
Running pdflatex on it results in
Topskip: 10.0pt
Smaller: 6.99997pt
Larger: 7.00012pt
As you see above, I tried hard to get exactly 7pt as a result of multiplication of some floating-point constant with topskip, but failed. Sure, it's very well-known that floating-point computations are really inaccurate in TeX, but I'm wondering whether some external package could provide us with a rather general-purpose multiplication function (say, mult), which approximates the mathematical multiplication in some sense, such that
newlength{myLength}
setlength{myLength}{mult{x}{topskip}}
themyLength
(or similar code) would result in 7.0pt for some verbatim floating-point constant x assuming that topskip is 10.0pt?
lengths floating-point
lengths floating-point
asked 4 mins ago
user0user0
46019
asked 4 mins ago
user0user0
46019
asked 4 mins ago
user0user0
46019
asked 4 mins ago
user0user0
46019
asked 4 mins ago
user0user0
46019
46019
add a comment |
add a comment |
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