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GameBoy Development Kit
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     43    <div id="projectname">GBDK 2020 Docs
     44    &#160;<span id="projectnumber">4.5.0</span>
     45    </div>
     46    <div id="projectbrief">API Documentation for GBDK 2020</div>
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    100 
    101 <div class="header">
    102   <div class="summary">
    103 <a href="#define-members">Macros</a> &#124;
    104 <a href="#typedef-members">Typedefs</a> &#124;
    105 <a href="#func-members">Functions</a>  </div>
    106   <div class="headertitle"><div class="title">time.h File Reference</div></div>
    107 </div><!--header-->
    108 <div class="contents">
    109 <div class="textblock"><code>#include &lt;<a class="el" href="types_8h_source.html">types.h</a>&gt;</code><br />
    110 <code>#include &lt;<a class="el" href="stdint_8h_source.html">stdint.h</a>&gt;</code><br />
    111 </div>
    112 <p><a href="time_8h_source.html">Go to the source code of this file.</a></p>
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    114 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
    115 Macros</h2></td></tr>
    116 <tr class="memitem:CLOCKS_PER_SEC"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="time_8h.html#CLOCKS_PER_SEC">CLOCKS_PER_SEC</a>&#160;&#160;&#160;60</td></tr>
    117 <tr class="separator:CLOCKS_PER_SEC"><td class="memSeparator" colspan="2">&#160;</td></tr>
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    119 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="typedef-members" name="typedef-members"></a>
    120 Typedefs</h2></td></tr>
    121 <tr class="memitem:time_t"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="stdint_8h.html#uint16_t">uint16_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="time_8h.html#time_t">time_t</a></td></tr>
    122 <tr class="separator:time_t"><td class="memSeparator" colspan="2">&#160;</td></tr>
    123 </table><table class="memberdecls">
    124 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
    125 Functions</h2></td></tr>
    126 <tr class="memitem:clock"><td class="memItemLeft" align="right" valign="top"><a class="el" href="asm_2mos6502_2types_8h.html#clock_t">clock_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="time_8h.html#clock">clock</a> (void) <a class="el" href="asm_2types_8h.html#OLDCALL">OLDCALL</a></td></tr>
    127 <tr class="separator:clock"><td class="memSeparator" colspan="2">&#160;</td></tr>
    128 <tr class="memitem:time"><td class="memItemLeft" align="right" valign="top"><a class="el" href="time_8h.html#time_t">time_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="time_8h.html#time">time</a> (<a class="el" href="time_8h.html#time_t">time_t</a> *t)</td></tr>
    129 <tr class="separator:time"><td class="memSeparator" colspan="2">&#160;</td></tr>
    130 </table>
    131 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
    132 <div class="textblock"><p >Sort of ANSI compliant time functions. </p>
    133 </div><h2 class="groupheader">Macro Definition Documentation</h2>
    134 <a id="CLOCKS_PER_SEC" name="CLOCKS_PER_SEC"></a>
    135 <h2 class="memtitle"><span class="permalink"><a href="#CLOCKS_PER_SEC">&#9670;&nbsp;</a></span>CLOCKS_PER_SEC</h2>
    136 
    137 <div class="memitem">
    138 <div class="memproto">
    139       <table class="memname">
    140         <tr>
    141           <td class="memname">#define CLOCKS_PER_SEC&#160;&#160;&#160;60</td>
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    145 
    146 </div>
    147 </div>
    148 <h2 class="groupheader">Typedef Documentation</h2>
    149 <a id="time_t" name="time_t"></a>
    150 <h2 class="memtitle"><span class="permalink"><a href="#time_t">&#9670;&nbsp;</a></span>time_t</h2>
    151 
    152 <div class="memitem">
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    154       <table class="memname">
    155         <tr>
    156           <td class="memname">typedef <a class="el" href="stdint_8h.html#uint16_t">uint16_t</a> <a class="el" href="time_8h.html#time_t">time_t</a></td>
    157         </tr>
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    160 
    161 </div>
    162 </div>
    163 <h2 class="groupheader">Function Documentation</h2>
    164 <a id="clock" name="clock"></a>
    165 <h2 class="memtitle"><span class="permalink"><a href="#clock">&#9670;&nbsp;</a></span>clock()</h2>
    166 
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    171           <td class="memname"><a class="el" href="asm_2mos6502_2types_8h.html#clock_t">clock_t</a> clock </td>
    172           <td>(</td>
    173           <td class="paramtype">void&#160;</td>
    174           <td class="paramname"></td><td>)</td>
    175           <td></td>
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    179 <p >Returns an approximation of processor time used by the program in Clocks</p>
    180 <p >The value returned is the CPU time (ticks) used so far as a <a class="el" href="asm_2z80_2types_8h.html#clock_t">clock_t</a>.</p>
    181 <p >To get the number of seconds used, divide by <a class="el" href="time_8h.html#CLOCKS_PER_SEC">CLOCKS_PER_SEC</a>.</p>
    182 <p >This is based on <a class="el" href="sms_8h.html#sys_time">sys_time</a>, which will wrap around every ~18 minutes. (unsigned 16 bits = 65535 / 60 / 60 = 18.2)</p>
    183 <dl class="section see"><dt>See also</dt><dd><a class="el" href="sms_8h.html#sys_time">sys_time</a>, <a class="el" href="time_8h.html#time">time()</a> </dd></dl>
    184 
    185 </div>
    186 </div>
    187 <a id="time" name="time"></a>
    188 <h2 class="memtitle"><span class="permalink"><a href="#time">&#9670;&nbsp;</a></span>time()</h2>
    189 
    190 <div class="memitem">
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    192       <table class="memname">
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    194           <td class="memname"><a class="el" href="time_8h.html#time_t">time_t</a> time </td>
    195           <td>(</td>
    196           <td class="paramtype"><a class="el" href="time_8h.html#time_t">time_t</a> *&#160;</td>
    197           <td class="paramname"><em>t</em></td><td>)</td>
    198           <td></td>
    199         </tr>
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    201 </div><div class="memdoc">
    202 <p >Converts <a class="el" href="time_8h.html#clock">clock()</a> time to Seconds</p>
    203 <dl class="params"><dt>Parameters</dt><dd>
    204   <table class="params">
    205     <tr><td class="paramname">t</td><td>If pointer <b>t</b> is not NULL, it's value will be set to the same seconds calculation as returned by the function.</td></tr>
    206   </table>
    207   </dd>
    208 </dl>
    209 <p>The calculation is <a class="el" href="time_8h.html#clock">clock()</a> / CLOCKS_PER_SEC</p>
    210 <p >Returns: time in seconds </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="sms_8h.html#sys_time">sys_time</a>, <a class="el" href="time_8h.html#clock">clock()</a> </dd></dl>
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