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ZealOS/docs/Kernel/KMathB.html
TomAwezome e29a8d9a46 Fix codebase HTML generation.
2021-07-03 02:51:43 -04:00

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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
<meta name="generator" content="ZealOS V0.05">
<style type="text/css">
body {background-color:#000000;}
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<body>
<pre style="font-family:courier;font-size:10pt">
<a name="l1"></a><span class=cF1>F64</span><span class=cF0> </span><span class=cF5>Clamp</span><span class=cF0>(</span><span class=cF1>F64</span><span class=cF0> d, </span><span class=cF1>F64</span><span class=cF0> lo, </span><span class=cF1>F64</span><span class=cF0> hi)
<a name="l2"></a>{</span><span class=cF2>//Clamp to F64 [] range.</span><span class=cF0>
<a name="l3"></a> </span><span class=cF1>if</span><span class=cF0> (d &lt; lo)
<a name="l4"></a> </span><span class=cF1>return</span><span class=cF0> lo;
<a name="l5"></a> </span><span class=cF1>if</span><span class=cF0> (d &gt; hi)
<a name="l6"></a> </span><span class=cF1>return</span><span class=cF0> hi;
<a name="l7"></a>
<a name="l8"></a> </span><span class=cF1>return</span><span class=cF0> d;
<a name="l9"></a>}
<a name="l10"></a>
<a name="l11"></a></span><span class=cF1>F64</span><span class=cF0> </span><span class=cF5>Min</span><span class=cF0>(</span><span class=cF1>F64</span><span class=cF0> n1, </span><span class=cF1>F64</span><span class=cF0> n2)
<a name="l12"></a>{</span><span class=cF2>//Min of two F64s.</span><span class=cF0>
<a name="l13"></a> </span><span class=cF1>if</span><span class=cF0> (n1 &lt;= n2)
<a name="l14"></a> </span><span class=cF1>return</span><span class=cF0> n1;
<a name="l15"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l16"></a> </span><span class=cF1>return</span><span class=cF0> n2;
<a name="l17"></a>}
<a name="l18"></a>
<a name="l19"></a></span><span class=cF1>F64</span><span class=cF0> </span><span class=cF5>Max</span><span class=cF0>(</span><span class=cF1>F64</span><span class=cF0> n1, </span><span class=cF1>F64</span><span class=cF0> n2)
<a name="l20"></a>{</span><span class=cF2>//Max of two F64s.</span><span class=cF0>
<a name="l21"></a> </span><span class=cF1>if</span><span class=cF0> (n1 &gt;= n2)
<a name="l22"></a> </span><span class=cF1>return</span><span class=cF0> n1;
<a name="l23"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l24"></a> </span><span class=cF1>return</span><span class=cF0> n2;
<a name="l25"></a>}
<a name="l26"></a>
<a name="l27"></a></span><span class=cF1>F64</span><span class=cF0> </span><span class=cF5>Pow10I64</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> i)
<a name="l28"></a>{</span><span class=cF2>//F64 int powers of ten.</span><span class=cF0>
<a name="l29"></a> </span><span class=cF1>if</span><span class=cF0> (i &gt; </span><span class=cFE>308</span><span class=cF0>)
<a name="l30"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF3>inf</span><span class=cF0>;
<a name="l31"></a> </span><span class=cF1>else</span><span class=cF0> </span><span class=cF1>if</span><span class=cF0> (i &lt; -</span><span class=cFE>308</span><span class=cF0>)
<a name="l32"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFE>0</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>;
<a name="l33"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l34"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFD>pow10_I64</span><span class=cF0>[i + </span><span class=cFE>309</span><span class=cF0>];
<a name="l35"></a>}
<a name="l36"></a>
<a name="l37"></a></span><span class=cF9>U64</span><span class=cF0> </span><span class=cF5>FloorU64</span><span class=cF0>(</span><span class=cF9>U64</span><span class=cF0> num, </span><span class=cF9>U64</span><span class=cF0> to)
<a name="l38"></a>{</span><span class=cF2>//Int multiples of num.</span><span class=cF0>
<a name="l39"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to;
<a name="l40"></a>}
<a name="l41"></a>
<a name="l42"></a></span><span class=cF9>U64</span><span class=cF0> </span><span class=cF5>CeilU64</span><span class=cF0>(</span><span class=cF9>U64</span><span class=cF0> num, </span><span class=cF9>U64</span><span class=cF0> to)
<a name="l43"></a>{</span><span class=cF2>//Int multiples of num.</span><span class=cF0>
<a name="l44"></a> num += to - </span><span class=cFE>1</span><span class=cF0>;
<a name="l45"></a>
<a name="l46"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to;
<a name="l47"></a>}
<a name="l48"></a>
<a name="l49"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>RoundI64</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> num, </span><span class=cF9>I64</span><span class=cF0> to)
<a name="l50"></a>{</span><span class=cF2>//Int multiples of num.</span><span class=cF0>
<a name="l51"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to;
<a name="l52"></a>}
<a name="l53"></a>
<a name="l54"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>FloorI64</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> num, </span><span class=cF9>I64</span><span class=cF0> to)
<a name="l55"></a>{</span><span class=cF2>//Int multiples of num.</span><span class=cF0>
<a name="l56"></a> </span><span class=cF1>if</span><span class=cF0> (num &gt;= </span><span class=cFE>0</span><span class=cF0>)
<a name="l57"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to;
<a name="l58"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l59"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l60"></a> num++;
<a name="l61"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to - to;
<a name="l62"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l63"></a>}
<a name="l64"></a>
<a name="l65"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>CeilI64</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> num, </span><span class=cF9>I64</span><span class=cF0> to)
<a name="l66"></a>{</span><span class=cF2>//Int multiples of num.</span><span class=cF0>
<a name="l67"></a> </span><span class=cF1>if</span><span class=cF0> (num &gt;= </span><span class=cFE>0</span><span class=cF0>)
<a name="l68"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l69"></a> num += to - </span><span class=cFE>1</span><span class=cF0>;
<a name="l70"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to;
<a name="l71"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l72"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l73"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l74"></a> num += to - </span><span class=cFE>1</span><span class=cF0>;
<a name="l75"></a> </span><span class=cF1>return</span><span class=cF0> num - num % to - to;
<a name="l76"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l77"></a>}
<a name="l78"></a>
<a name="l79"></a></span><span class=cF2>//See </span><a href="https://tomawezome.github.io/ZealOS/Doc/Credits.html#l1"><span class=cF4>::/Doc/Credits.DD</span></a><span class=cF2>.</span><span class=cF0>
<a name="l80"></a>#</span><span class=cF1>define</span><span class=cF0> LIN_CONGRUE_A </span><span class=cFE>6364136223846793005</span><span class=cF0>
<a name="l81"></a>#</span><span class=cF1>define</span><span class=cF0> LIN_CONGRUE_C </span><span class=cFE>1442695040888963407</span><span class=cF0>
<a name="l82"></a>
<a name="l83"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cFD>RandInt</span><span class=cF0>()
<a name="l84"></a>{</span><span class=cF2>//Don't use this. Use the functions below.</span><span class=cF0>
<a name="l85"></a> </span><span class=cF9>I64</span><span class=cF0> res = </span><span class=cF5>Fs</span><span class=cF0>-&gt;rand_seed;
<a name="l86"></a>
<a name="l87"></a> res = LIN_CONGRUE_A * res ^ (res &amp; </span><span class=cFE>0xFFFFFFFF0000</span><span class=cF0>) &gt;&gt; </span><span class=cFE>16</span><span class=cF0> + LIN_CONGRUE_C;
<a name="l88"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF5>Bt</span><span class=cF7>(</span><span class=cF0>&amp;</span><span class=cF5>Fs</span><span class=cF0>-&gt;task_flags, </span><span class=cF3>TASKf_NONTIMER_RAND</span><span class=cF7>)</span><span class=cF0>)
<a name="l89"></a> res ^= </span><span class=cF5>TSCGet</span><span class=cF0>;
<a name="l90"></a> </span><span class=cF5>Fs</span><span class=cF0>-&gt;rand_seed = res;
<a name="l91"></a>
<a name="l92"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l93"></a>}
<a name="l94"></a>
<a name="l95"></a></span><span class=cF1>U8</span><span class=cF0> </span><span class=cF5>RandU8</span><span class=cF0>()
<a name="l96"></a>{</span><span class=cF2>//Random U8.</span><span class=cF0>
<a name="l97"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFD>RandInt</span><span class=cF0> &amp; </span><span class=cF3>U8_MAX</span><span class=cF0>;
<a name="l98"></a>}
<a name="l99"></a>
<a name="l100"></a></span><span class=cF9>I16</span><span class=cF0> </span><span class=cF5>RandI16</span><span class=cF0>()
<a name="l101"></a>{</span><span class=cF2>//Random I16.</span><span class=cF0>
<a name="l102"></a> </span><span class=cF9>I64</span><span class=cF0> res = </span><span class=cFD>RandInt</span><span class=cF0>;
<a name="l103"></a>
<a name="l104"></a> </span><span class=cF1>return</span><span class=cF0> res.i16[</span><span class=cFE>0</span><span class=cF0>];
<a name="l105"></a>}
<a name="l106"></a>
<a name="l107"></a></span><span class=cF9>U16</span><span class=cF0> </span><span class=cF5>RandU16</span><span class=cF0>()
<a name="l108"></a>{</span><span class=cF2>//Random U16.</span><span class=cF0>
<a name="l109"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFD>RandInt</span><span class=cF0> &amp; </span><span class=cF3>U16_MAX</span><span class=cF0>;
<a name="l110"></a>}
<a name="l111"></a>
<a name="l112"></a></span><span class=cF9>I32</span><span class=cF0> </span><span class=cF5>RandI32</span><span class=cF0>()
<a name="l113"></a>{</span><span class=cF2>//Random I32.</span><span class=cF0>
<a name="l114"></a> </span><span class=cF9>I64</span><span class=cF0> res = </span><span class=cFD>RandInt</span><span class=cF0>;
<a name="l115"></a>
<a name="l116"></a> </span><span class=cF1>return</span><span class=cF0> res.i32[</span><span class=cFE>0</span><span class=cF0>];
<a name="l117"></a>}
<a name="l118"></a>
<a name="l119"></a></span><span class=cF9>U32</span><span class=cF0> </span><span class=cF5>RandU32</span><span class=cF0>()
<a name="l120"></a>{</span><span class=cF2>//Random U32.</span><span class=cF0>
<a name="l121"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFD>RandInt</span><span class=cF0> &amp; </span><span class=cF3>U32_MAX</span><span class=cF0>;
<a name="l122"></a>}
<a name="l123"></a>
<a name="l124"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>RandI64</span><span class=cF0>()
<a name="l125"></a>{</span><span class=cF2>//Random I64.</span><span class=cF0>
<a name="l126"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFD>RandInt</span><span class=cF0>;
<a name="l127"></a>}
<a name="l128"></a>
<a name="l129"></a></span><span class=cF9>U64</span><span class=cF0> </span><span class=cF5>RandU64</span><span class=cF0>()
<a name="l130"></a>{</span><span class=cF2>//Random U64.</span><span class=cF0>
<a name="l131"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cFD>RandInt</span><span class=cF0>;
<a name="l132"></a>}
<a name="l133"></a>
<a name="l134"></a></span><span class=cF1>F64</span><span class=cF0> </span><span class=cF5>Rand</span><span class=cF0>()
<a name="l135"></a>{</span><span class=cF2>//Random F64.</span><span class=cF0>
<a name="l136"></a> </span><span class=cF1>return</span><span class=cF0> (</span><span class=cFD>RandInt</span><span class=cF0> &amp; </span><span class=cFE>0x3FFFFFFFFFFFFFFF</span><span class=cF0>) / </span><span class=cF5>ToF64</span><span class=cF0>(</span><span class=cFE>0x4000000000000000</span><span class=cF0>);
<a name="l137"></a>}
<a name="l138"></a>
<a name="l139"></a></span><span class=cF9>I64</span><span class=cF0> </span><span class=cF5>Seed</span><span class=cF0>(</span><span class=cF9>I64</span><span class=cF0> seed=</span><span class=cFE>0</span><span class=cF0>, </span><span class=cF9>CTask</span><span class=cF0> *task=</span><span class=cF3>NULL</span><span class=cF0>)
<a name="l140"></a>{</span><span class=cF2>//Set </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KMathB.html#l134"><span class=cF4>Rand</span></a><span class=cF2>() seed. Zero for timer-based.</span><span class=cF0>
<a name="l141"></a> </span><span class=cF1>if</span><span class=cF0> (!task)
<a name="l142"></a> task = </span><span class=cF5>Fs</span><span class=cF0>;
<a name="l143"></a> </span><span class=cF1>if</span><span class=cF0> (seed)
<a name="l144"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l145"></a> </span><span class=cF5>LBts</span><span class=cF0>(&amp;task-&gt;task_flags, </span><span class=cF3>TASKf_NONTIMER_RAND</span><span class=cF0>);
<a name="l146"></a> </span><span class=cF1>return</span><span class=cF0> task-&gt;rand_seed = seed;
<a name="l147"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l148"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l149"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l150"></a> </span><span class=cF5>LBtr</span><span class=cF0>(&amp;task-&gt;task_flags, </span><span class=cF3>TASKf_NONTIMER_RAND</span><span class=cF0>);
<a name="l151"></a> </span><span class=cF1>return</span><span class=cF0> task-&gt;rand_seed ^= </span><span class=cF5>TSCGet</span><span class=cF0>;
<a name="l152"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l153"></a>}
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