summaryrefslogtreecommitdiff
path: root/devdocs/c/numeric%2Fmath%2Flog10.html
diff options
context:
space:
mode:
authorCraig Jennings <c@cjennings.net>2025-08-14 22:58:58 -0500
committerCraig Jennings <c@cjennings.net>2025-08-14 22:58:58 -0500
commit82ba818ff456bcd6d56a06226e3f27e98fbb55c3 (patch)
tree158cfc17b2f644a10f063cb546752cfaae12c97f /devdocs/c/numeric%2Fmath%2Flog10.html
parent9278ddd4ea1a8b1a4c1edaa8894516e3f48d245b (diff)
downloaddotemacs-82ba818ff456bcd6d56a06226e3f27e98fbb55c3.tar.gz
dotemacs-82ba818ff456bcd6d56a06226e3f27e98fbb55c3.zip
removing all downloaded devdocs files
Diffstat (limited to 'devdocs/c/numeric%2Fmath%2Flog10.html')
-rw-r--r--devdocs/c/numeric%2Fmath%2Flog10.html83
1 files changed, 0 insertions, 83 deletions
diff --git a/devdocs/c/numeric%2Fmath%2Flog10.html b/devdocs/c/numeric%2Fmath%2Flog10.html
deleted file mode 100644
index 5f9bfc00..00000000
--- a/devdocs/c/numeric%2Fmath%2Flog10.html
+++ /dev/null
@@ -1,83 +0,0 @@
- <h1 id="firstHeading" class="firstHeading">log10, log10f, log10l</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;math.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">float log10f( float arg );</pre>
-</td> <td> (1) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> <tr class="t-dcl"> <td> <pre data-language="c">double log10( double arg );</pre>
-</td> <td> (2) </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">long double log10l( long double arg );</pre>
-</td> <td> (3) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;tgmath.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">#define log10( arg )</pre>
-</td> <td> (4) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> </table> <div class="t-li1">
-<span class="t-li">1-3)</span> Computes the common (base-<i>10</i>) logarithm of <code>arg</code>.</div> <div class="t-li1">
-<span class="t-li">4)</span> Type-generic macro: If <code>arg</code> has type <code>long double</code>, <code>log10l</code> is called. Otherwise, if <code>arg</code> has integer type or the type <code>double</code>, <code>log10</code> is called. Otherwise, <code>log10f</code> is called.</div> <h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> arg </td> <td> - </td> <td> floating point value </td>
-</tr>
-</table> <h3 id="Return_value"> Return value</h3> <p>If no errors occur, the common (base-<i>10</i>) logarithm of <code>arg</code> (log<sub class="t-su t-su-b">10</sub>(arg) or lg(arg)) is returned.</p>
-<p>If a domain error occurs, an implementation-defined value is returned (NaN where supported).</p>
-<p>If a pole error occurs, <code><a href="huge_val" title="c/numeric/math/HUGE VAL">-HUGE_VAL</a></code>, <code>-HUGE_VALF</code>, or <code>-HUGE_VALL</code> is returned.</p>
-<h3 id="Error_handling"> Error handling</h3> <p>Errors are reported as specified in <a href="math_errhandling" title="c/numeric/math/math errhandling"><code>math_errhandling</code></a>.</p>
-<p>Domain error occurs if <code>arg</code> is less than zero.</p>
-<p>Pole error may occur if <code>arg</code> is zero.</p>
-<p>If the implementation supports IEEE floating-point arithmetic (IEC 60559),</p>
-<ul>
-<li> If the argument is ±0, -∞ is returned and <code><a href="../fenv/fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_DIVBYZERO</a></code> is raised. </li>
-<li> If the argument is 1, +0 is returned </li>
-<li> If the argument is negative, NaN is returned and <code><a href="../fenv/fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_INVALID</a></code> is raised. </li>
-<li> If the argument is +∞, +∞ is returned </li>
-<li> If the argument is NaN, NaN is returned </li>
-</ul> <h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;stdio.h&gt;
-#include &lt;math.h&gt;
-#include &lt;float.h&gt;
-#include &lt;errno.h&gt;
-#include &lt;fenv.h&gt;
-
-// #pragma STDC FENV_ACCESS ON
-int main(void)
-{
- printf("log10(1000) = %f\n", log10(1000));
- printf("log10(0.001) = %f\n", log10(0.001));
- printf("base-5 logarithm of 125 = %f\n", log10(125)/log10(5));
- // special values
- printf("log10(1) = %f\n", log10(1));
- printf("log10(+Inf) = %f\n", log10(INFINITY));
- //error handling
- errno = 0; feclearexcept(FE_ALL_EXCEPT);
- printf("log10(0) = %f\n", log10(0));
- if(errno == ERANGE) perror(" errno == ERANGE");
- if(fetestexcept(FE_DIVBYZERO)) puts(" FE_DIVBYZERO raised");
-}</pre></div> <p>Possible output:</p>
-<div class="text source-text"><pre data-language="c">log10(1000) = 3.000000
-log10(0.001) = -3.000000
-base-5 logarithm of 125 = 3.000000
-log10(1) = 0.000000
-log10(+Inf) = inf
-log10(0) = -inf
- errno == ERANGE: Numerical result out of range
- FE_DIVBYZERO raised</pre></div> </div> <h3 id="References"> References</h3> <ul>
-<li> C17 standard (ISO/IEC 9899:2018): </li>
-<ul>
-<li> 7.12.6.8 The log10 functions (p: 179) </li>
-<li> 7.25 Type-generic math &lt;tgmath.h&gt; (p: 272-273) </li>
-<li> F.10.3.8 The log10 functions (p: 380) </li>
-</ul>
-<li> C11 standard (ISO/IEC 9899:2011): </li>
-<ul>
-<li> 7.12.6.8 The log10 functions (p: 245) </li>
-<li> 7.25 Type-generic math &lt;tgmath.h&gt; (p: 373-375) </li>
-<li> F.10.3.8 The log10 functions (p: 522) </li>
-</ul>
-<li> C99 standard (ISO/IEC 9899:1999): </li>
-<ul>
-<li> 7.12.6.8 The log10 functions (p: 225-226) </li>
-<li> 7.22 Type-generic math &lt;tgmath.h&gt; (p: 335-337) </li>
-<li> F.9.3.8 The log10 functions (p: 459) </li>
-</ul>
-<li> C89/C90 standard (ISO/IEC 9899:1990): </li>
-<ul><li> 4.5.4.5 The log10 function </li></ul>
-</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="log" title="c/numeric/math/log"> <span class="t-lines"><span>log</span><span>logf</span><span>logl</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes natural (base-<i>e</i>) logarithm (\({\small \ln{x} }\)ln(x)) <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td> <div><a href="log2" title="c/numeric/math/log2"> <span class="t-lines"><span>log2</span><span>log2f</span><span>log2l</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes base-2 logarithm (\({\small \log_{2}{x} }\)log<sub>2</sub>(x)) <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td> <div><a href="log1p" title="c/numeric/math/log1p"> <span class="t-lines"><span>log1p</span><span>log1pf</span><span>log1pl</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes natural (base-<i>e</i>) logarithm of 1 plus the given number (\({\small \ln{(1+x)} }\)ln(1+x)) <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/numeric/math/log10" title="cpp/numeric/math/log10">C++ documentation</a></span> for <code>log10</code> </td>
-</tr> </table> <div class="_attribution">
- <p class="_attribution-p">
- &copy; cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br>
- <a href="https://en.cppreference.com/w/c/numeric/math/log10" class="_attribution-link">https://en.cppreference.com/w/c/numeric/math/log10</a>
- </p>
-</div>