Questions tagged [fp]

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Error messages not thrown with fp_eval

I'm writing some error-checking on values passed to a function, to raise an error if values are not OK, before passing them to \fp_eval. From what I've noticed, the call to \fp_eval messes with the ...
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0 votes
1 answer
29 views

Calculating marking points exam class

I want to calculate marking points for an exam by multiplying a percentage with the total number of points (e.g., 0.5 * \numpoints{}) to make a grading table. Problem is that before I run the ...
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4 votes
3 answers
198 views

xfp - Huge integers - Why is \inteval less accurate then \fpeval?

I was trying to print the first few terms of hyperfactorials, which are defined by H(0)=1 and H(n)=H(n-1)*n^n. When fpeval is used for calculation and inteval is used for printing: \documentclass{...
0 votes
0 answers
24 views

Using the result of a macro/command in FPEval / Undefined Control Sequence

How can the following LaTeX code be fixed to use the result of "\RoundGrade{\codeA}" correctly in a later \FPEval computation? \documentclass{standalone} \usepackage{fp} \newcommand{\...
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0 votes
0 answers
58 views

Make \exp_not:V and \exp_args:NV work for fp variables too?

In interface3 the description of \exp_not:V command is the following: \exp_not:V ⟨variable⟩ Recovers the content of the ⟨variable⟩, then prevents expansion of this material in x-type or e-type ...
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0 votes
3 answers
62 views

arithmetic in tex when the data type is not an integer

Use case. I am drafting a contract where I would specify in the beginning an hourly rate using \newcommand{\monthlyrate}{\$10000} And in the following command, I would like to specify a penalty that ...
  • 1,051
6 votes
1 answer
322 views

What is the ">?" LaTeX3 floating point operator

The l3fp package documentation refers to the >? operator (page 237 of interface3.pdf) but I could not find any example or explanation there despite it is recognized as shown in next example. \...
1 vote
1 answer
81 views

Why doesn't this work? It should be a pendulum with harmonic movement

\documentclass[border=0pt,pstricks]{standalone} \usepackage{pst-coil,pstricks-add} \usepackage[nomessages]{fp} \FPset\CoilArm{0.25} \FPset\CoilWidth{0.3} \FPeval\CoilTurn{round(50/3:3)} \FPeval\...
1 vote
1 answer
81 views

tkzDrawTangentLine ! FP error: UPN stack is empty!. \FP@errmessage #1->\errmessage {FP error: #1!}

The following code typesets with error ! FP error: UPN stack is empty!. \FP@errmessage #1->\errmessage {FP error: #1!} Anyone know how I can fix this? MWE \documentclass[tikz]{standalone} \...
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0 votes
0 answers
33 views

Why doesn't the fp package work inside tabulars and how do I get around that? [duplicate]

I want to add sums while writing tabular (tabularx) lines. For this I have written a command to emit individual lines, but all the \FPxxx commands fail to work from within the tabular environment. I ...
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4 votes
1 answer
144 views

On the incompatibility of the tikz and fp packages: division (/) operator in \FPeval and node in tikz

Let us assume that we want to divide two numbers u=-60 and v=3 using the fp package without calling tikz picture. It works fine as below: \documentclass{article} \usepackage{fp} \begin{document} \edef\...
  • 1,503
2 votes
1 answer
266 views

On the fp package: inverse sine function

On page 3/7 of the fp package we see the definition of the inverse sine function as below: \FParcsin#1#2 % #1 := arcsin(#2) From high school we may remember: Arcsin(0.5)=pi/6= 0.524 around. I got 0 ...
  • 1,503
1 vote
1 answer
47 views

On the fp package: repeat last test

On page 3/7 fp package documentation we read: %repeat last test \ifFPtest ...\else...\fi % repeat last test I really could not understand this. That is why I wrote a code as below to see what \...
  • 1,503
0 votes
1 answer
202 views

Using the fp package inside an invoice template [closed]

I am using this template : https://www.latextemplates.com/template/invoice And I want to kind of do something similar to this : \newcommand*{\total}[1]{\FPdiv{\t}{\arabic{#1}}{1000}\formatNumber{\t}} ...
1 vote
1 answer
98 views

Nested macros using FPeval

I am trying to create an easy to use template, with a part that would look like this: The original code I used to do this is the following: \begin{tabularx}{\linewidth}{|X|X|X|X|X|} \hline \rowcolor{...
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5 votes
1 answer
116 views

Can \fp_eval handle uppercase e ("E") exponent symbol format

While handling data from a text file, I stumbled upon this problem. My numeric data is formatted using a %n.dE C format specifier. which outputs numbers with a uppercase e (E) as scientific notation ...
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0 votes
1 answer
98 views

fp and macro question

I try to feed macros doing FP calculations into other macros doing the same, and face problems with macro expansion. The usual "protect" trick didn't work for me. Any hints? An example is below. \...
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1 vote
2 answers
194 views

pgfplotstable: correct way to generate new columns using custom commands in a table that can be plotted with tikz

Sorry if the title is too big, but I didn't know how to express it as something specific, I try to generate new columns in a table using custom commands, for instance: \documentclass{scrbook} \...
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0 votes
1 answer
128 views

newcommand, pgfplotsinvokeforeach, expl3: How to handle with several arguments of the kind '#...'

I have #1 for my newcommand. I have ##1 for my pgfplotsinvokeforeach-loop. Now I would need something like ###1 for my comparing-method "\fpcompareTF{##1<0}{333}{##1}". What is the right way ...
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1 vote
1 answer
279 views

Using \def variables computed by \FPeval within tikz

Hello there I am an absoulute beginner. I took some tikz template for drawing nerual nets and tried to modify it so I can change the number of layers automatically, but it yields strange errors. I ...
4 votes
1 answer
282 views

Getting the equation number as an integer

I want to use the number of an equation as an integer value. Consider the following MWE: \documentclass{article} \usepackage[nomessages]{fp}% http://ctan.org/pkg/fp \begin{document} \begin{...
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5 votes
2 answers
568 views

Nested FPifeq : Extra \fi error

I want to have a command Unit with 1 parameter that return : nothing if the parameter is 1 - if the parameter is -1 the parameter in any other case The goal is to show x and -x instead of 1*x* and -...
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1 vote
1 answer
768 views

How to calculate factorial with xfp package

I'm trying to calculate the factorial with the xfp package. In the documentation (http://ctan.cs.uu.nl/macros/latex/contrib/l3packages/xfp.pdf), I have found the function name to be fact. My code ...
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3 votes
1 answer
850 views

How to use result of \FPeval computation "inline"?

Instead of writing something as, which works \documentclass{article} \usepackage{array} \usepackage{fp} \begin{document} \FPeval{\result}{4*0.3} %store the result in `\result` first then: \...
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0 votes
2 answers
282 views

combining ifthen with FPeval - problem

if i use \FPeval{\one}{\csname test1\endcsname} everything is fine. If i use \FPeval{\one}{\csname test1\endcsname+\csname test2\endcsname} in \ifthenelse, then i get en error. \...
2 votes
1 answer
233 views

Use \ifthenelse{\equal{ on a number called from reference

I want to store an answer key for an exam and then automatically move the multiple choice answer choices around for each question match its predetermined answer. (I need to conform my multiple choice ...
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2 votes
3 answers
439 views

How to store values in an array?

How to store a calculated value in array? zz(1) = ( xx(1) + yy(1) )/2 \fpeval\zz(\counter){(\xx(\counter)+\yy(\counter))/2} NOT working \documentclass{beamer} \usepackage{siunitx,amsmath} \...
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4 votes
2 answers
427 views

Array variable with fp package: How to use \FPeval in array?

I want use array along with fp package. \FPadd\xx{\somevalues(1)}{\somevalues(3)} works well \FPeval\xx{\somevalues(1)+\somevalues(1)} NOT working How to use \FPeval in array? \documentclass{...
  • 7,676
11 votes
3 answers
1k views

How to write Quadratic equation with negative coefficient

How to write Quadratic equation with negative coefficient in fp For a=1, b=-5, c= 6, $\ca x^2+\cb x + \cc=0$ gives 1x^2 + -5x + 6 But i want to have x^2 -5x + 6 \documentclass{beamer} \usepackage{...
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2 votes
1 answer
276 views

Adding/subtracting to the /thecsvrow number in csvsimple

Assume a simple example centered on the csvsimple package. \documentclass{standalone} \usepackage{csvsimple} \usepackage{fp} \usepackage[table]{xcolor} \begin{filecontents*}{input.csv} Foo,...
6 votes
2 answers
863 views

Using FP package to compute sum breaks: FP error: UPN stack is empty!

I am trying to sum up entries in a table and thought using the fp package was the way to go. The MWE below, \AddToTotal{18,000.00} \AddToTotal{-17,000.00} \AddToTotal{-8,000.00} yields: as ...
5 votes
1 answer
186 views

Spy magnification with tangent to an ellipse doesn't work

I tried to adapt the zooming code from https://tex.stackexchange.com/a/457705/21557 to an ellipse, but if I choose the zooming factor high enough there is an obvious mismatch of the tangent position: ...
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6 votes
1 answer
270 views

Why does the result of FPeval disappear after a `&`

I am trying to use the fp package, and the results are deeply confusing to me: \documentclass[a4paper]{article} \usepackage{fp} \begin{document} \begin{tabular}{r|l} \FPeval\testing{2 + 2} a & \...
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1 vote
1 answer
121 views

How to add an unit to a calculated value properly?

I have some trouble to understand how I ought to handle some values I calculated with fp to use them as length. It is obvious that I have to add an unit to the number to use it, but trying to do so, I ...
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2 votes
3 answers
1k views

FPeval in a macro [closed]

I am writing a document where I need to use a lot the following construct \FPeval{\born}{1833} \FPeval{\died}{1894} \FPeval{\age}{round(\died - \born,0)} Born in \born, died in \died (\age years old)...
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3 votes
1 answer
82 views

FP calculation problem with multicolumn

I want to do a calculation inside tabular environment, My tabular look like this \documentclass{book} \usepackage{array} \usepackage{fp} \begin{document} \begin{tabular}{|*{4}{c|}} \hline a & ...
0 votes
1 answer
477 views

Strange behaviour of \FPeval

I have a piece of code, which sometimes compiled correctly, other times it gives an error. Is it possible that the package fp is unstable? Or might another package conflict with fp? How could I fix ...
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1 vote
1 answer
281 views

Can FP read scientific notation?

I'm reading numbers from a file that are in scientific notation, and I'd like to do a simple calculation with them using FP. However, it's giving me the error FP error: Illegal character e found in ...
1 vote
1 answer
56 views

Why is there extra space in left justified longtable cell when creating custom function

I'm using the longtable and fp packages to create an invoice in the scrlttr2 document. I have used the \entry custom command to allow for creating running totals, compute the tax, and obtain a grand ...
1 vote
3 answers
1k views

How to extract integer part and fractional part of a decimal number?

Code: \documentclass{article} \usepackage[a4paper]{geometry} \usepackage[english]{babel} \usepackage{fp} \def\x{59.3612} \begin{document} \noindent x = \x\\ %what to write here? int(x) = 59\\ frac(x) ...
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1 vote
0 answers
89 views

Can spreadtab distinguish between displayed value and actual value?

Number formatting behaves in a way that is not ideal in spreadtab. Basically, I can set rounding using \STautoround{2}, but if the numbers in the table are used in later computations, the rounding ...
5 votes
1 answer
610 views

LATEX3: More than 9 arguments

I am working on a table template with Latex3 and want to calculate the sum of a column. My Problem is that i can't pass more than 9 parameters, which is necessary since I don't know how big the table ...
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5 votes
2 answers
743 views

Calculating a real inside an environment

I am trying to calculate real numbers within an environment. Unfortunately, I'll have to display the result of the calculations outside the environment. This is my minimal example. \documentclass{...
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3 votes
1 answer
457 views

Problem with negative "multido" and "fp"

Is there a way to use "negative" numbers with multido and fp? In the code below, it works with \Nx=4+0.5 but not with \Nx=4+-0.5. Additional question: is there a way to do this without using package ...
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1 vote
1 answer
723 views

fp - How to keep running sum in variable?

I have this code in my LaTeX: \FPset{totalHours}{0} \newcommand{\entry}[5]{ \FPeval{totalHours}{(totalHours)+#5} #1 & #2 & #3 & #4 & #5 \\ } Where \entry is meant to be an ...
5 votes
2 answers
781 views

Unable to pass result of one command as argument to another

In my document I have the need to do a little bit of maths, which is related to sizing images. Specifically I need a linear interpolation function, the inverse function of linear interpolation, and a ...
10 votes
2 answers
2k views

Direct evaluation of fp expression

This code \documentclass{article} \usepackage[nomessages]{fp} \begin{document} \FPeval{result}{clip(cos(pi))} $\cos(\pi)=$\result \end{document} would produce the following output: Is it possible ...
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2 votes
1 answer
798 views

\FPeval not working in new command

\documentclass[10pt]{article} \usepackage{calc} \usepackage{fp} \newcommand{\test}[1]{ \makeatletter \setlength{\tempdimen}{\widthof{#1}} \FPeval\‌​resultaP(70-\strip@pt\tempdimen)/2} \makeatother} \...
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4 votes
1 answer
658 views

\widthof{} command in \FPeval

Could someone please tell me how I can use the \widthof{} command from the calc package within \FPeval from the fp package? \documentclass[10pt]{article} \usepackage{calc} \usepackage{fp} \begin{...
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1 vote
1 answer
204 views

Library with xkeyval, make my life easier?

Question is related to the topic that I opened last year regarding the Library with xkeyval, fp and newcommand where the library now grew quite big and adding new stuff in it has become tedious and ...
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