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cl-sites/novaspec.org/cl/f_digit-char.html
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<!DOCTYPE HTML>
<HTML LANG="en-us"
><HEAD
><TITLE
>digit-char | Common Lisp Nova Spec</TITLE
><META CHARSET="US-ASCII"
><LINK REL="canonical" HREF="f_digit-char.html"
><LINK REL="next" HREF="f_digit-char-p.html" TYPE="text/html" TITLE="digit-char-p"
><LINK REL="prev" HREF="f_alphanumericp.html" TYPE="text/html" TITLE="alphanumericp"
><LINK REL="up" HREF="13_2_Characters_Dictionary.html" TYPE="text/html" TITLE="13.2 Characters Dictionary"
><LINK REL="start" HREF="index.html" TYPE="text/html" TITLE="Common Lisp Nova Spec"
><META NAME="VIEWPORT" CONTENT="width=device-width, initial-scale=1.0"
><LINK REL="STYLESHEET" HREF="dpans.css%3F3909942064.css"
><SCRIPT SRC="dpans.js%3F3909942064"
></SCRIPT
><SCRIPT SRC="apropos.js%3F3909942064"
></SCRIPT
></HEAD
><BODY
><DIV
><DIV CLASS="topnav"
><DIV CLASS="breadcrumb"
><SPAN CLASS="breadcrumb-item"
><A HREF="index.html"
>Common Lisp Nova Spec</A
></SPAN
> <SPAN CLASS="breadcrumb-item"
>&#8594; <A HREF="13_Characters.html"
>13. Characters</A
></SPAN
> <SPAN CLASS="breadcrumb-item"
>&#8594; <A HREF="13_2_Characters_Dictionary.html"
>13.2 Characters Dictionary</A
></SPAN
> <SPAN CLASS="breadcrumb-item"
>&#8594; <A HREF="f_digit-char.html"
>digit-char</A
></SPAN
></DIV
><DIV CLASS="apropos"
><DIV CLASS="apropos-io"
><A HREF="f_alphanumericp.html" CLASS="prev"
>&#8592;</A
><SPAN ID="apropos-label"
>Apropos </SPAN
><INPUT ID="apropos" AUTOFOCUS="AUTOFOCUS" PLACEHOLDER="Type here to search" ONINPUT="aproposInput(this);" ONKEYUP="aproposKeyup(event);" ONCHANGE="aproposChange(this);" ONFOCUS="aproposFocus(this);" ONFOCUSOUT="aproposFocusout(this);"
><A HREF="f_digit-char-p.html" CLASS="next"
>&#8594;</A
></DIV
><DIV ID="apropos-res"
></DIV
></DIV
></DIV
><DIV CLASS="matter"
><DIV CLASS="com"
><DIV CLASS="begincom"
><HR
><TABLE WIDTH="100%" CELLSPACING="0" CELLPADDING="0"
><TR
><TD ALIGN="LEFT" VALIGN="BASELINE" WIDTH="100%" CLASS="name"
><SPAN CLASS="idx" DATA-KIND="idxref" DATA-TERM="digit-char"
></SPAN
><B
>digit-char</B
></TD
><TD ALIGN="RIGHT" VALIGN="BASELINE" WIDTH="0" NOWRAP="NOWRAP" CLASS="ftype"
><I
>Function</I
></TD
></TR
></TABLE
><HR
></DIV
><UL CLASS="subtoc"
></UL
><DL
><DT
><B
>Syntax</B
></DT
><DD
><P CLASS="j"
><B
>digit-char</B
> <SPAN CLASS="cmssi"
>weight</SPAN
> <SPAN CLASS="cmtt"
>&amp;optional</SPAN
> <SPAN CLASS="cmssi"
>radix</SPAN
> <SPAN CLASS="arrow"
>&#8594;</SPAN
> <SPAN CLASS="cmssi"
>char</SPAN
></P
></DD
><DT
><B
>Arguments and Values</B
></DT
><DD
><P CLASS="j"
><VAR CLASS="param"
>weight</VAR
> &#8212; a non-negative <A HREF="26_1_Glossary.html#integer"
><EM CLASS="term"
>integer</EM
></A
>. </P
><P CLASS="j"
><VAR CLASS="param"
>radix</VAR
> &#8212; a <A HREF="26_1_Glossary.html#radix"
><EM CLASS="term"
>radix</EM
></A
>. The default is <CODE CLASS="f"
>10</CODE
>. </P
><P CLASS="j"
><VAR CLASS="param"
>char</VAR
> &#8212; a <A HREF="26_1_Glossary.html#character"
><EM CLASS="term"
>character</EM
></A
> or <A HREF="26_1_Glossary.html#false"
><EM CLASS="term"
>false</EM
></A
>.</P
></DD
><DT
><B
>Description</B
></DT
><DD
><P CLASS="j"
>If <VAR CLASS="param"
>weight</VAR
> is less than <VAR CLASS="param"
>radix</VAR
>, <A HREF="f_digit-char.html" CLASS="funref"
><B
>digit-char</B
></A
> returns a <A HREF="26_1_Glossary.html#character"
><EM CLASS="term"
>character</EM
></A
> which has that <VAR CLASS="param"
>weight</VAR
> when considered as a digit in the specified radix. If the resulting <A HREF="26_1_Glossary.html#character"
><EM CLASS="term"
>character</EM
></A
> is to be an <A HREF="26_1_Glossary.html#alphabetic"
><EM CLASS="term"
>alphabetic</EM
></A
><SPAN CLASS="meaning"
><SUB CLASS="sub"
><SPAN CLASS="cmr"
>1</SPAN
></SUB
></SPAN
> <A HREF="26_1_Glossary.html#character"
><EM CLASS="term"
>character</EM
></A
>, it will be an uppercase <A HREF="26_1_Glossary.html#character"
><EM CLASS="term"
>character</EM
></A
>. </P
><P CLASS="j"
>If <VAR CLASS="param"
>weight</VAR
> is greater than or equal to <VAR CLASS="param"
>radix</VAR
>, <A HREF="f_digit-char.html" CLASS="funref"
><B
>digit-char</B
></A
> returns <A HREF="26_1_Glossary.html#false"
><EM CLASS="term"
>false</EM
></A
>.</P
></DD
><DT
><B
>Examples</B
></DT
><DD
><PRE CLASS="screen"
>(digit-char 0) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> #\0
(digit-char 10 11) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> #\A
(digit-char 10 10) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> <A HREF="26_1_Glossary.html#false"
><EM CLASS="term"
>false</EM
></A
>
(digit-char 7) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> #\7
(digit-char 12) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> <A HREF="26_1_Glossary.html#false"
><EM CLASS="term"
>false</EM
></A
>
(digit-char 12 16) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> #\C ;not #\c
(digit-char 6 2) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> <A HREF="26_1_Glossary.html#false"
><EM CLASS="term"
>false</EM
></A
>
(digit-char 1 2) <SPAN CLASS="cmsy"
><SPAN CLASS="arrow"
>&#8594;</SPAN
></SPAN
> #\1</PRE
></DD
><DT
><B
>See Also</B
></DT
><DD
><P CLASS="j"
><A HREF="f_digit-char-p.html" CLASS="funref"
><B
>digit-char-p</B
></A
>, <A HREF="f_graphic-char-p.html" CLASS="funref"
><B
>graphic-char-p</B
></A
>, <A HREF="2_1_Character_Syntax.html#sec_2_1" CLASS="secref"
><SPAN CLASS="cmr"
>Section</SPAN
> <SPAN CLASS="cmr"
>2.1</SPAN
> <SPAN CLASS="cmr"
>(Character</SPAN
> <SPAN CLASS="cmr"
>Syntax)</SPAN
></A
></P
></DD
><DT
><B
>Notes</B
></DT
></DL
></DIV
></DIV
><DIV CLASS="footer"
><DIV CLASS="btmnav"
><A HREF="f_alphanumericp.html" CLASS="prev"
>&#8592;</A
><A HREF="f_digit-char-p.html" CLASS="next"
>&#8594;</A
></DIV
><DIV CLASS="trail"
>Conversion to HTML copyright 2023 by Gilbert Baumann</DIV
></DIV
></DIV
><SCRIPT
>domReady();</SCRIPT
></BODY
></HTML
>
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