Ifnum latex. \fi and the comparison between a and b returns false.
Ifnum latex – Nicola Talbot Commented Dec 17, 2013 at 18:28 This is not completely catastrophic though, because even with < active, it might well expand to a catcode 12 < hence could work ok in \ifnum tests. To demonstrate the general-purpose programming abilities of LaTeX, we’ll look at an example that calculates the first Fibonacci numbers. Therefore \pgfresult is not 1 or 0 anymore and \ifnum cannot be used. The command \condRow with three arguments test if the first argument is equal to 1, the first and second cells of tabular will be the second and third argument of the command. So while it does just display In order to set entries of a table in math mode, you need array. LaTeX's conditional text inclusion capability allows efficient document variability. A simple \chapter command in the \frontmatter will not give a numbering and correctly set the header. pdf in the end according to my package specifications. 30. In pgfplotsutil. Also, if i remove \hline from table. LaTeX Error: Missing \begin{document}. Which latex installation and version are you running on your mac? It is usually listed at the top of the Go to LaTeX r/LaTeX. Thank you so much! The text was updated successfully, but these errors were encountered: All reactions. As for the patch, the original version treats the whole mark@corau\theauthor as a single number, so it breaks when you Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company line 23: Missing = inserted for \ifnum. My suggestion: \int_case:nnF. However when package color is loaded and used with driver pdftex it then loads support file The {before \Rowcolor makes TeX insert the alignment entry 〈pre〉-text and stop its search for \noalign material, which \rowcolor contains. . ltx and change the code from \ifnum \@itemdepth >\thr@@\@toodeep\else to \ifnum \@itemdepth >4\@toodeep\else and you will also need to define counters enumv, control sequence \labelitemv, and bunch of other stuff to support depth 5. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 20. If num is odd then it executes A else B. This code executes A if num>n else B. I'm trying to write a budget proposal and I'm using counters to control the number and price of each item. \cs_new. Maybe try loading the dcolumn package in the YAML / preamble:--- title: "Test" author: "me" date: "1/27/2019" output: pdf_document: この記事はLaTeXでプログラミングしてみよう（前編）の続きです。まだ読んでいない方は、先に前編を読むことをオススメします。実践さて、前編ではLaTeXでプログラミングするのに必要となる基礎知識 \MACROA hello1 \else world1 % next three lines cause trouble (nested ifnum) \MACROB hello2 \fi \fi Now \MACROA is expanded and you have s. Unfortunately it doesn't work. , you finish a paragraph, you're on the end of page 4, write \checkoddpage which gives false, then insert something which breaks over to the next page. The \whiledo of ifthen is a wrapper of the \@whilesw of the latex kernel; the latter is expandable, whereas the \whiledo wrapper of I'm using LaTeX with the listings package, and I number every fifth line of the code by having: \lstset{ numbers=left, stepnumber=5, firstnumber=1, numberfirstline=true } Now because of the numberfirstline=true in these settings, apart from the multiples of five the first line of each listing is numbered too, but I would like to have the last line of the code be numbered You need to copy the definitions of \enumerate and \itemize from file latex. Try typing <return> to proceed. l. Modified 8 years, 11 months ago. To summarize my case: when looping through a continous range of numbers, from 1 to 24, I'd like do まとめ. Therefore you can not use this command inside a TikZ path specification. \ifnum number₁ relation number₂ expandable command Test relations between numbers. For this to work there should be a matching \ifnum 0=`{\fi} following in a macro which is called later on in the process. Comparing two integers: \ifnum\value{num}>n {A} \else {B}\fi This code executes A if num>n else B. Commented May 27 at 2:55 LaTeX relies on these everywhere: for enumerate and for counting things (sections, equations, pages). In the last chapter, there's a subsection. While this isn’t a proof of Turing completeness, it is a good example of a complete algorithm implemented in LaTeX. Why both \vrule and \hrule can be used in \leaders?I wonder it's restricted horizontal mode under \leaders. The following code justifies text left and right: \documentclass{article} \usepackage{lipsum} \begin{document} \begin{itemize} \item \lipsum[1-1] \end{itemize} \end{document} Misplaced \noalign. tex this happens outside of groups. Note that if the counter's value is not yet computed %% (at the first time \LaTeX\ runs on the Missing = insterted for \ifnum. xxx}}{5}{figure. Everything works perfectly - but for some reason, as soon as I include hyperref, everything breaks:Incomplete \ifnum; all You want to keep the if grouping within a single cell, you can implement or by nesting \if in various ways, the example tests 1 or 17. 6 in there: In \leaders, are \vrule and \hrule essentially the same ? On the other word, what's difference between \vrule and \hrule in \leaders?. Package imakeidx tests for \directlua and finds it defined, because it uses eTeX's \ifdefined. \else 11 equals 0. \if, \ifx, \ifnum, \ifdim, \ifthenelse. Throw the current context, set a negate flag, then restart the\ifnum. If one of the conditions is true, then the expansion is T, otherwise F. Please, 81 \def\TE@or{\TE@endeval\noexpand\ifTE@val\noexpand\else\noexpand\ifnum} \TE@and The internal version of \and. 52. 3 posts • Page 1 of 1. That's nothing to do with latex, just In LaTeX the symbol for material implication is produced by $\to$, but for biconditional? symbols; math-operators; logic; Share. <to be read again> v 1. A LaTeX forum ⇒ Document Classes ⇒ Command name concatenation. tex files in play. For a small number of exceptions you could use \ifnum: \foreach \x in {10, 9,, 0} { \ifnum\x=5 \relax \node[] {\x}; \else\ifnum\x=10 \relax % do things with \x=10 \else % possibly more cases \fi\fi } which can become a mess, once you have more than a couple of cases. \documentclass{article} \usepackage{tikz} \makeatletter \newcommand\binomialCoefficient[2]{% % Store values \c@pgf@counta=#1% n \c@pgf@countb=#2% k % % Take advantage of symmetry if k > n - k Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site If you change the \lets in the first branch of the \ifnum to \xdef\M{1}\xdef\N{\i}, you can get it to compile. code. The test \if 1<>0 compares 1 and < and yields false, thus you see 1 equals 0. Improve this question. Provide details and share your research! But avoid . LaTeX Templates Articles, Essays, and Journal Templates Theses, Books, Title pages Letters Presentations and Posters Curricula Vitae / Résumés Assignments, Laboratory books and reports Calendars and Miscellaneous; LaTeX Community Announcements Community talk Comments & Wishes New Members; LaTeX Books LaTeX Beginner's Guide LaTeX Here is a solution using TeX integer arithmetic. Use \cfoot{% \ifnum\value{page}<2\vspace{9pt}\the\numexpr\value{pa ge}+1% \else\the\numex pr\value{page}+1% \fi } The primitive \numexpr is used to perform calculations on numbers without changing counter or count register contents directly. You probably want a more general command like the one I've defined below (\equalitytest), which compares the values of two arbitrary fixed-point numbers. Is there any way to solve that problem? \newcom Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site In latex we can use built-in commands to execute code whether the conditions are true or not. Please note the {} around eqn-- it does no harm for the display at the number, but keeps the eqn text as a delimited token list and this can be 'gobbled' with moving arguments in the usage of \gobblesomeargs which drops the If i copy the exact contents from table. Commented May 2, 2017 at 20:51. Alternatively, you may try using an online LaTeX editor. As for specific dates, the syntax is \DTMdate{2018-06-07} but the formatting depends on the style. 0em \@plus\p@ \setlength\@tempdima{1. I'm reading Malcolm Clark's A Plain TeX Primer. If #1 is not a number, then the \ifnum argument expansion stops after the 0 with a false comparison (having already printed out #1), and then また、記事の折々で編集者による「訳注」をつけさせていただいております。我々も \LaTeX の勉強の一環としてこの記事を作成しています。 もし間違いや解釈違いがありましたらご指摘のほどよろしくお願いします。 Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site In many situations, e. In fact, the parameter #1 is not seen as a number by \ifnum. – Skillmon Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Information and discussion about LaTeX's math and science related features (e. You just need to remove the direct output, and instead in a second step use the value of your numlength counter: \documentclass{article} \makeatletter \newcounter{numlength}% \newcommand{\length}[1]{% \setcounter{numlength}{0}% I need something similar to \ifnum \j mod 2 = 0 rest of a number, but do not know how to do this in line 22. Visit Stack Exchange \ifnum can be used to compare numbers, but only if the latter are integers. Instead, you can use \pgfmathparse together with \ifnum: Among its primitive conditionals, TeX has \ifodd: \ifodd<number><true text>\else<false text>\fi Be careful though that testing \ifodd\value{page} (in LaTeX, it would be \ifodd\pageno in Plain TeX) is not reliable due to the asynchronous page breaking mechanism. If that doesn't work, type X <return> to quit. 4 ? Not sure what this means exactly. Comment Multi-line Text on Counter Condition. <to be read again> m l. I am reusing counters defined by PGF in order to avoid having to declare new ones. ! Missing = inserted for \ifnum. No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more. Also the system of passing information via macros expanding to T or F has been completely replaced by a simpler system using \iftrue, which furthermore allows lazy I'm trying to write a budget proposal and I'm using counters to control the number and price of each item. So what you want to test is the "abstract" value of the counter: \renewcommand{\chaptermark}[1]{% Rather use \value{page} than \thepage, in order to perform a numerical test on the value of the page counter, not on its output definition (which would fail in certain cases anyway). Thus \if\first\second\fi expands \first and the input stream has now \if abc\second\fi and the comparison between a and b returns false. Logical operations like OR and AND are performed using the basic \if<true>\else<false>\fi structure, mixing and match as required to obtain the required Stack Exchange Network. I could solve my problem in an easy way: I just compiled with PDFTeX in order to get the pictures made by pstricks. I'd like the proof cases to reorder themselves automatically when I reorder cases in the definition. Don't load algorithm2e when you're using algpseudocode. 7 and LEd 0. One other place this is used is in \hline. \hline ->\noalign {\ifnum 0=`}\fi \hrule \@height \arrayrulewidth \futurelet l. Use \totvalue instead, it maps the name to the internal counter register that can be used with \ifnum. LaTeX Font Info: okay on input line 14. 9k 37 37 gold badges 93 93 silver badges 300 300 bronze badges. These power adapting content and appearance utilizing LaTeX's built-in conditional logic. I also created a table and used \\ifnum to control if the item should be included in the pr Here is an \ifnum comparison that can handle non-numeric inputs. I'm trying to adapt a latex file that a friend sent me, since generating bibliographies is new to me. You should think to \thechapter as the representation of the chapter number in some strange radix: a numeric test like 100>20 would give wrong results if the left hand side is in base two and the right hand side in base 10 and you're doing something similar. formulas, graphs). Regards. That resolved my problem. Below are my files and the results I get. If it is an integer, it's probably a counter. I want to use \setcounter{tocdepth}{0}!Therefore no subsection should be displayed in the I'm trying to use expl3 sequences in order to stored 0, 1 or more affiliations to 1 or more authors stored in a datatool database. I'm using \include liberally, and there are 47 . In the image I attached, you can see part of the longtable I have. \documentclass{article As the closing \fi is following directly thereafter the whole thing \ifnum\z@=`}\fi expands to nothing independent on the actually number value. All answers I've found through Google just say to use tocloft. Hereby the space-character behind the 1 also is tokenized as an explicit space-token. Type H <return> for immediate help. Please give me some instructions to solve this problem. Аnalog of \ifodd condition for verification if page number is You can also use \intcalcMod from the intcalc package: \documentclass{article} \usepackage{amsmath} \usepackage{ifthen} \usepackage{intcalc} \newcounter{mycount I am trying to produce a 6-by-6 checkboard of small circles, alternating colour between red and black. I appear to be able to return through the messages and I get a properly formatted . Asking for help, clarification, or responding to other answers. Share. It does it by comparing 1 with 0#1. Follow edited Aug 20, 2013 at 20:32. Suppose your macro is looking for some number in the argument \mymacro12345\relax 678 would make it stop at five and then do whatever else it's supposed to do. 15 \hline I expect to see \noalign only after the \cr of an alignment. Thank you for any ideas. Here is an example using this command in a macro to test if string #1 is empty : \usepackage{etoolbox} \newcommand{\Test}[1]{% \ifstrempty{#1}% {% The "traditional" way is the old-school way. You can specify each case latex. That is, you convert the numbers into lengths/dimensions (that can contain decimal values, like 2. th. LaTexLearner Posts: 139 \ifnum and all other primitives are explained in the TeX book or in TeX by topic: texbytopic. However, neither slashbox nor diagbox (more recent and maintained) apparently can be used in array. So you can try Those questions were came up when I was looking through The TeXbook around page 225 and solving the exercise 21. 4. like this: \noexpand{\ifnum1>0}% hello1 \else world1 % next three lines cause trouble (nested ifnum) \MACROB hello2 \fi \fi Now \noexpand "tells" TeX not to expand the subsequent token if that is @kammad93 Lots of things. <to be I was looking for some hints in the amsmath documentation and found the following trick (adapted, of course): \usepackage{amsmath} \renewcommand{\theequation}{\thechapter--\arabic{equation}} If we look at If \pgfutil@ifundefined (also the same with LaTeX's \@ifundefined) is called, \directlua gets defined with meaning \relax. However, I sometimes need to define temporary commands which breaks such us Then LaTeX starts to gather \ifnum's second TeX-⟨number⟩-quantity. The TeX primitive \ifnum is sufficient here. But since the node text is put in a normal TeX box you can use \ifthenelse inside the node text. \tikzset{fpu} \pgfmathparse{int(0)}\show\pgfmathresult \pgfmathparse{int(1)}\show\pgfmathresult The lines show 0Y0 for zero and 1Y1 for one. If you want the The latex kernel has some loops, but with the @ letter, thus their use is not so widespread. You have used a \hline command in the wrong place, probably outside a table. 65. If false skip the remaining terms. There are many more usecases but that's pretty much the main reason of its appearance I have been trying to automate the production of stepped tables that contain conversion factors of all sorts. - Missing = inserted for \ifnum. Logic is following: if edition =1 there is suffix -li (1-li) if edition>1 and if edition<21 there is prefix me- (me-15,me-20 . \numexpr, \dimexpr and \glueexpr. tex, it works. 5em LaTeX is Turing complete; that is, it can be programmed to compute just about anything. ltx, line 2084: \def\value#1{\csname c@#1\endcsname} Therefore, doing \ifnum\value{counterA}>\value{counterB} will provide the appropriate tokens for the test. (See Protrusion of fractions in tabulars). sommerfee Posts: 503 The above example would show a match, were the \ifs changed to \ifnums, since \ifnum will interpret/convert the character 2 into an integer. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. --- Sure he can use e. This is a problem for me as i'm using \input to retrieve table contents exported from Stata. @user5359531 \documentclass{article}\usepackage{datetime2}\begin{document}\today\end{document} is a basic MWE that prints the current date as YYYY-MM-DD style. r/LaTeX. caption. Thank you so much. Test 1 false (as expected) Test 2 true (as expected) ! Missing number, treated as zero. To do this I have attempted to use \\pgfmathparse and \\ifnum in order to decide if to colour a I would like to implement a command in LaTeX which would sum two numbers before comparing them to a third number as follows: \ifnum #1+45>0 above \else left \fi where #1 is an angle in degrees. For example, the following code will check if the list `\list{a, b, c}` is missing the number `d`: latex \ifnum\value{d}=0 I'm embarrassed to say I've been at this about an hour (LaTeX humbles you sometimes I guess). site moderator & package author. As part of this I have a rather convoluted macro to convert decimals to fractions. The document can be rendered, and everything look fine, but I am still getting some errors I can't figure out I have a similar issue as the one discussed here If condition controlled with a loop variable. 82 \def\TE@and{\TE@endeval\noexpand\ifTE@val\noexpand\ifnum} \TE@neg \TE@negswitch \not. Without a full minimal working example it is difficult to tell what you are trying to do, however, \ifnum will not work because it compares integer values and \lerpxu will not in general be an integer. Solution: If you are using a local LaTeX IDE/Studio, I recommend updating the packages you are using. Note that \value is not a general purpose ”extractor“, but a very specific LaTeX macro which only works if its argument is a LaTeX counter defined with \newcounter, whose expansion is the ”abstract” value. If you do, then you can add \global\let\M\M\global\let\N\N to the end of the 2nd branch of the \ifnum. 0. Then, I edited every single image with Inkscape and, finally, I included them into my book with the figure environment. An online LaTeX editor that’s easy to use. Unfortunately TeX doesn't support \ifnum with <= and >= at primitive level because the author of TeX expected that programmers are able to use the negation, if it is needed. You will get a huge warning in your log-file cause package tocstyle is in an alpha state. Last edited by ziggo1879 on Mon Feb 04, 2013 5:26 pm, edited 3 times in total. ziggo1879 Posts: 2 Any idea why the \setboolean statement not works correctly in the \ifnum statement? Ziggo. If a number is odd: \ifodd\value{num} {A}\else {B}\fi. Explore if-then-else structures, boolean expressions, and practical examples. 46 \DeclareUnicodeCharacter{00A4}{\textcurrency} You're in trouble here. I would also recommend to not use some \if TT\fi trickery but use a if-macro which accepts the true and false branches as arguments. We can substitute > with < and =. However, you can use \ifdim to compare fixed-point number. At the end of the run I get these diagnostics: (\end occurred when \iftrue on line 366 was incomplete) (\end occurred when \ifnum on line 366 was incomplete) I would like to justify text inside an itemize environment with the beamer class. I couldn't find an equivalent to \use_seq:Nn for token lists, and it seemed reasonable that there would be an automatic conversion. You can use this to check if a list is missing a number. In this case you can just add the \ifnum stuff to the node contents to make TikZ happy. This is compared with the last T in the line. 5} (followed by: ) Please note, that this needs multiple LaTeX runs to completely adjust. I'm trying to insert citations and a bibliography in ASA citation style using natbib. The following MWE works nicely: \\documentclass{article} \\usepackage{ You can iterate over all characters, testing the catcode of every one of them. 3 Stack Exchange Network. B. Since in LaTeX the instruction \newcounter{counterA} performs also \newcount\c@counterA and the macro \value is defined by % latex. 10 \hline I expect to see \noalign \if compares two tokens, independently of what they mean. So, for example, if TeX is in either of its horizontal modes and needs to process a character with category code 11, it would used the Since you already looked into TeX by Topic: You can see both \year and \ifnum are documented there. You could use the standard natbib styles for starters: \bibliographystyle{plainnat} or \bibliographystyle{unsrtnat}. \documentclass{article} \usepackage{fancyhdr} \usepackage{blindtext} \def\pagethreshold{10} Have you tried full filter={\ifnum\B>300\csvfilteraccept\else\csvfilterreject\fi} too? – user31729. @ifpackagelater{expl3}{2018/02/21} line 49: Missing = inserted for \ifnum. If not DeclareOption. I also created a table and used \ifnum to control if the item should be I'm trying to make macro to work in biblatex edition field. I don't know how to tell \foreach to expand its list argument first, hence I have to resort to the device from the TikZ manual with a \mylist definition first. etc) if \ifnum works fine it it's got two straight numbers. Use \pgfmathtruncatemacro \documentclass{article} \usepackage{tikz} \begin I'm working on a large LaTeX document (over 1000 pages). However, even that can get you into trouble for more complex cases. マクロマクロしてる使い方よりも, こちらの方が私たちの手に馴染んでいるし, 普段のスタイルに近くて \ifthenelse is "normal" LaTeX code. It can be fix by building new control sequence, for example: which is a handful. \ifnum\dimexpr\relax<\dimexpr\relax works because scaling dimensions preserves the order. 5pt<6pt wouldn't > latex version of \firstoftwoarguments / \secondoftwoarguments :) > You don't even need that, thanks LaTeX Templates Articles, Essays, and Journal Templates Theses, Books, Title pages Letters Presentations and Posters Curricula Vitae / Résumés Assignments, Laboratory books and reports Calendars and Miscellaneous; LaTeX Community Announcements Community talk Comments & Wishes New Members; LaTeX Books LaTeX Beginner's Guide LaTeX The mandatory xintexpr solution. What you often see on this site, is to make TeX stop collecting for an argument of specific type (very very roughly speaking). On the other hand if you want to test whether Solution: If you are using a local LaTeX IDE/Studio, I recommend updating the packages you are using. N. tex into the main file instead of using \input, it works. Then just print the active/mathactive(\mathcode="8000) ones:\documentclass{article} \begin{document} \newcount\currentchar \currentchar=0 \loop \ifnum\active=\catcode\currentchar Character code \number\currentchar, aka ``\texttt{\char\currentchar}'', is active. Sometimes there are conflicts between some packages but they usually resolve quickly by releasing an update and In latex we can use built-in commands to execute code whether the conditions are true or not. In my opinion, there's no need to use \ifthenelse. 0 for the first cycle and similarly for the others, not integers. , ignores the negative sign. The forms <integer-1> and <integer-2> must expand to integers while <R> must be one of the characters '=', '<', or \ifnum only accept one test: \ifnum 1<\thepage<33 will just test if 1<\thepage and consider <33 as part of the “true text”. LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 14. From the pdfTeX user manual: \pdfstrcmp{<general text>}{<general text>} (expandable) This command compares two strings and expands to 0 if the strings are equal, to -1 if the first string ranks before the second, and to 1 otherwise. Mensch. The following example illustrates a simple use of the \ifnum TeX primitive to redefine the command \example depending on the value of the counter mycount. But unless there Quick and dirty method: Gobbling some args from \p@equation which is responsible for the typesetting of references to an equation label:. However, a <number> is required before the comparison operator in \ifnum tests. The former creates an algorithm floating environment, but in order to use algorithmic from algpseudocode, you should load algorithm instead (from the algorithms bundle). Top. An important part of the grammar of TEX is the rigorous definition of a number , the syntactic entity that TEX expects when semantically an LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 14. My problem is that in the last column the title and some letters appeared higher or lower than the rest of the text from the longtable. Copy link I want to define a conditional command that I can easily use with \\ifnum, hence such a command should expand to a number. \documentclass{article} \newcounter{mycount} \newcommand\namei{a} \newcommand\nameii{b} LaTeX Templates Articles, Essays, and Journal Templates Theses, Books, Title pages Letters Presentations and Posters Curricula Vitae / Résumés Assignments, Laboratory books and reports Calendars and Miscellaneous; LaTeX Community Announcements Community talk Comments & Wishes New Members; LaTeX Books LaTeX Beginner's Guide LaTeX $\begingroup$ Of course, he wants modular arithmetic to facilitate producing figures with certain features. If the \hline command is written inside a table, try including \\ before it. The bibliography is generated perfectly well but all of the citations show up as question marks and the console prints the error: Missing = inserted for \ifnum Using \setcounter{tocdepth}{0} displays just the chapter's title in the table of contents. On page 111 there's an exercise to define a macro that prints the current time. Where number is defined to be. TeXのマクロ\ifnumと, LaTeXのマクロ\@whilenum, \@forのおかげで, Pythonのサブセットから本当に機械的にLaTeXのコードに変換できることを示しました. I'm using MikTex 2. Note that you need to specify some unit (such as pt), though. However, it is not clear whether you need the updated values of \M and \N to carry through to each successive loop iteration. But there are many, many, many other natbib-compatible styles out there (in fact apacite is more the exception than the rule). Liam I'm trying to create a function with tikz that can create some points around a circle. alty \ifnum \lastkern =\thr@@ \egroup \egroup \ifdim \wd \UL@box – alfC. % Digit-character-token "0" of `\ifnum`'s second TeX-<number>-quantity found, thus the process of % gathering tokens that belong to \ifnum's second TeX-<number>-quantity is still in progress and now % forms a process of gathering more digit-character-tokens or something that terminates the % process of gathering, hereby expanding expandable Macro \total of package is not expandable, it starts with a definition. The reason is that {is a non-space, non-expandable token (see here and here for more detailed explanations on TeX's behavior at the beginning or end of a tabular row). However, when calculation is involved, I get bunch of ! Missing = inserted for \ifnum. See the explanation there. In tabular environment & cannot be skipped, so when your condition is true LaTeX will do the following: it scans #2 & #3, then when it encounter \else the expansion stops, however, when the second & is met the tabular environment starts expansion again, so the output becomes #2 & #3 & #3. 恐らく「奇数か偶数か」の判定が一番有効なのはページ番号についてでしょう 4 。 しかしLaTeXの仕様上の制限のため、実際に\isodd{\value{page}}をその用途で使えるのはヘッダ・フッタの出力の場合に Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site \if\ifnum#1>\variable T\else\ifnum#1=0 T\else F\fi\fi T% TRUE \else FALSE \fi \if expands tokens until two non-expandable tokens remain. If #1 is a number, the \ifnum comparison works in the standard way, since the leading 0 does not affect the numerical value. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Setting the headers with fancyhdr usually requires changing the \chaptermark and \sectionmark commands; you don't need the latter, as you want only the chapter title in the header. You can always Which goes to show it's best to ask a question for what you need rather that one step in one possible way of solving it:-) Werner's answer is fine for the question asked but it invokes a rather large sledgehammer of the xstring and xifthen packages for \ifx\valign#1\valign which will test that #1 is empty (as long as it isn't \valign) in a single expansion step. Stefan Kottwitz Site Admin The icing on the cake would be if LaTeX could also use something like TiKz to intelligently put a cross through figures that are within the affected text (maybe that's asking too much, but this community has surprised me before!). outer vertical mode. Advantage: TRUE is not duplicated as in \ifnum#1>\variable TRUE \else \ifnum#1=0 % TRUE \else FALSE \fi \fi Generally you can use \ifnum etc. (E. \fi would print: \ifnum\x=\value{section} (don't forget a trailing % if you don't want a space from the newline character). LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 14. Instead, you must nest your conditionals: \newcount\X \X=10 \newif\ifGEzero \loop \the\X\endgraf \advance \X by -1 % The spaces after the 0's are important \ifnum\X>0 \GEzerotrue \else \ifnum\X=0 \GEzerotrue \else\GEzerofalse \fi \fi \ifGEzero \repeat \bye Central to leveraging conditionals are commands like: \if to test Booleans, \ifnum to compare numbers, \ifdim for dimensions, and \ifthenelse to evaluate more complex expressions. \documentclass{article} \usepackage{tikz} \usepackage[active,tightpage]{preview} \ You can use \@ifnextchar{<char>}{<true>}{<false>} to check if the next character (actually next token) is -. \documentclass{article} \usepackage{algorithm} \usepackage[noend]{algpseudocode} \begin{document} \begin{algorithm} BTW, a Google search for latex and "relative section" results in hits that almost exclusively involve misuse of the word "relative"; the authors meant to say "relevant section". Other Conditional Commands: \ifnum, \ifdim, etc. When \lastrecorddate is put last, you don't see the problem because { being an unexpandable token, it finishes the <number> being read, then is skipped since the test is false here. errors. In this case, the whole math can be put in one After looking at various answers on the site and by looking at the documentation of e-tex, I am still wondering what is exactly allowed in the various types of expressions, i. Would appreciate any help! (Compiling with Lualatex) Errors related to alignment in tables are sometimes related to a missing latex package liked dcolumn. Here's an example in which I show two methods. Raw TeX does not have amenities such as compound Boolean operators. e. I didn't hear anything wrong with it by now, so it should be safe to use. Members Online • \ifnum \totalattackcurrentmonth<\totalattacksixmonth {less than} \else \ifnum \totalattackcurrentmonth>\totalattacksixmonth greater than \else equal to If you want to put only text in a cell with spreadtab you simply place somewhere in the cell the character @, this answer show how you can skip & inside the conditional. Just a note, most of the times graphicx is smart enough to detect the correct driver on its own, and you don't have to specify \usepackage[pdftex]{graphicx} but just do \usepackage{graphicx}. Removing this additional grouping level solves the problem, \pgfmathresult returns 2. The method here is for more complicated situation where fixed point operations must be exact. \ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % What does this means? Does the 0, 1, 1 mean argument for commands ifnum, ifxetex and ifluatex? Shouldn't the arguments be in braces "{}" ? Confusion on TikZ and PGF LaTeX packages - what they are, how they are stored by MiKTeX, and how they are interpreted by LaTeX compilers. 5pt) and perform the comparison using \ifdim rather than \ifnum. On the first approach: For the first approach to work you don't need to alter all that much from your actual code. LaTeX offers several low level conditionals to check values directly: \ifnum compares two Arabic numbers \ifdim checks relationship between two dimensions \ifthenelse constructs full if-then-else test \boolean runs test on a Boolean true/false value; For instance, we may render text depending on In latex we can use built-in commands to execute code whether the conditions are true or not. Core commands like \ifdef, alongside other conditionals and logical operators give extensive \ifnum is a TeX primitive conditional for comparing integers: Code: Select all \ifnum1=1 true \else false \fi % yields true \ifnum1<2 true \else false \fi % yields true \ifnum1>2 In latex we can use built-in commands to execute code whether the conditions are true or not. But again the character-token 1 is taken for an element/the first element that belongs to a sequence of character-tokens from the set {1,2,3,4,5,6,7,8,9,0}. When processing commands in maincontrol(), TeX uses the absolute value of the current mode—i. This time I spare you folks the \xintFor, as \foreach is too venerable. \documentclass{article} \usepackage{tikz} \begin{document} \begin{tikzpicture} \draw (0,0) rectangle %node{\ifnum0=1\relax My Label\fi} % Works correctly when the value = 簡単に使用できるオンラインLaTeXエディター。インストール不要、リアルタイムコラボレーション、バージョン管理、何百種類のLaTeXテンプレートなど多数の機能。 pgfplots uses library fpu for better precision by default, which has a different internal number format. By the way, 1<\value{page} is better, because it doesn't depend on the Learn how to use conditional statements in LaTeX for dynamic document creation. The \ifnum command denotes the start of an if-then-else control structure. Thus your request implies also checking whether the tokens forming the "given parameter" at the stage of expansion form an algorithm which terminates at all and which does not trigger errors. Hence The code comes from the answer to another question, and seems to work in other contexts. Core conditionals include: 一方、LaTeXでは見出しや文字に統一感があり、フォントや大きさを自動で調節してくれるので、美しい文書に仕上がります。 それでは、この洗練されたLaTeX文書を作成するにはどうすれば良いでしょうか。答えは、「コマンド」です。 Under pdfTeX you can perform string comparisons using \pdfstrcmp{<strA>}{<strB>}. Comparing two integers: \ifnum\value{num}>n {A} \else {B}\fi. Wondering if anyone has a better idea? table-of-contents; tocloft; {% \ifnum \c@tocdepth >\m@ne \addpenalty{-\@highpenalty}% \vskip 1. I've reproduced Clark's answer below: \newcount\minleft \newcount\ti Note the use of negative values for the complement of the various modes, such as internal vs. Sometimes there are conflicts between some packages but they usually resolve quickly by releasing an update and you might see that there was nothing wrong with your commands. You can make \first and \second unexpandable by saying \if\noexpand\first\noexpand\second\fi but this would Missing = inserted for \ifnum [closed] Ask Question Asked 9 years, 2 months ago. kableExtra automatically adds a bunch of latex packages to the preamble and that might explain why the kableExtra solution works. If the number is equal to zero, the `\ifnum` command will return a value of `true`. Thus the space-token If you want to use \ifnum to compare \dphi with anything alse, you have to define \dphi as a <number> – Stephen. When you define a new counter in LaTeX, with \newcounter{foo}, also the command \thefoo is defined, Hi. I can reproduce an issue if \checkoddpage falls between two pages it could be wrong. 4 ? ! Missing number, treated as zero. {\ifnum 0=`}\fi \hrule \@height \arrayrulewidth \futurelet l. The primitive was introduced in pdfTEX 1. More precisely, I am interested in where one could place real number division and multiplication. Viewed 39k times {introduction} % includes latex files from the same directory \include{packages} % could be called Methodology or methods or anyfile name \include{structure} % could be results \include{GRIPPERS} \include I am using a loop to define keys with the xkeyval package, as well as to actually read out the keys inside some self-defined command. Refer to If Then Else for odd page/even page for this specific problem. As shown by egreg on this thread, using the \ifstrempty command from the etoolbox package, it's possible to test if the given string is empty or not, with the added bonus that linebreaks in the given string won't cause problems. latex @temps(wa) commands. \TE@negswitch is not \if compares the following two tokens after macro expansion, because it wants to compare unexpandable tokens. Commented Jun 4, 2015 at 10:19. Text appears to be justified by default with the article class, but not with the beamer class. He's using TikZ anyway, in order to produce these figures; that's the point of his question. Of course I cannot tell you which are appropriate for submission for your journal. For the sake of the example, if you had, \if 11<>0 then the test would be true because TeX would compare 1 and the next 1 and would return true. sty: %% Returns the numeric total value of a registered total counter that is %% passed as argument. 23 \ifnum\mytestvar =2 % ? How can I make Test 3 pass as false (instead of crash), so that Test 4 can perform as well in the same run? Hopefully, by not including any additional packages? TeX has the \ifnum conditional (and also \ifcase), but you may be better off using etoolbox's arithmetic tests. In that case you need to write LaTeX specific issues not fitting into one of the other forums of this category. See the LaTeX manual or LaTeX Companion for explanation. These are wrappers around the underlying TeX structures. g. in paths. , with \ifnum, (La)TeX does form numbers by expanding expandable tokens. I have a definition with 20 cases or so, and a proof about that definition has one case for each case of the definition. \ifnum and \advance to perform modular arithmetic by hand with TeX, rather than \pgfmathmod as described in another answer. In order to evaluate the expression as typesetting, the mighty \the as prefix is necessary. Then the test: \if 11<>0 11 is not equal 0. Thank you for your help. Here the argument is unbraced by the first macro and placed behind \@ifnextchar which is normally the last element in a macro to read Are there any "if" commands like "\ifnum" in LaTeX? 4. Getting started with latex; Accessing documentation of LaTeX packages; Add Citation; Build Tools; Counters, if statements and loops with latex; Counter declaration, initialization and printing to pdf; If statements; Loops - repeating things; Operations with counters; Using loops in Tikz; Creating a Bibliography; Creating posters using @tjk8000 Yeah, I really don't see the point of this els-cas thingy, mainly because they use their own typesetting system (definitely not LaTeX), so elsarticle was good enough (and I doubt bugs will be fixed: the development seems to be stalled). There are, however, cases in which TikZ expects some explicit character, or so. Comparing two integers: \ifnum\value{num}>n {A} \else {B}\fi This code executes A if num>n \ifnum. From totcount. I don't think it's been extensively tested but should be fine to turn on and off mid-document. Visit Stack Exchange The `\ifnum` command can be used to check if a number is equal to zero. However \ifnum 4. xshtjfqc ztbfo fqal pew tsxunm frjaj btwwq xxbe fysbkvx wsmamo