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<a href="#define-members">Macros</a> &#124;
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<div class="textblock"><code>#include &lt;types.h&gt;</code><br />
<code>#include &lt;<a class="el" href="stdint_8h_source.html">stdint.h</a>&gt;</code><br />
</div>
<p><a href="nes_2bcd_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:BCD_HEX"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#BCD_HEX">BCD_HEX</a>(v)&#160;&#160;&#160;((<a class="el" href="gb_2bcd_8h.html#BCD">BCD</a>)(v))</td></tr>
<tr class="separator:BCD_HEX"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:MAKE_BCD"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#MAKE_BCD">MAKE_BCD</a>(v)&#160;&#160;&#160;<a class="el" href="sms_2bcd_8h.html#BCD_HEX">BCD_HEX</a>(0x ## v)</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:BCD"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="stdint_8h.html#uint32_t">uint32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#BCD">BCD</a></td></tr>
<tr class="separator:BCD"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:uint2bcd"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#uint2bcd">uint2bcd</a> (<a class="el" href="stdint_8h.html#uint16_t">uint16_t</a> i, <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *value) <a class="el" href="asm_2types_8h.html#OLDCALL">OLDCALL</a></td></tr>
<tr class="separator:uint2bcd"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:bcd_add"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#bcd_add">bcd_add</a> (<a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *sour, const <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *value) <a class="el" href="asm_2types_8h.html#OLDCALL">OLDCALL</a></td></tr>
<tr class="separator:bcd_add"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:bcd_sub"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#bcd_sub">bcd_sub</a> (<a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *sour, const <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *value) <a class="el" href="asm_2types_8h.html#OLDCALL">OLDCALL</a></td></tr>
<tr class="separator:bcd_sub"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:bcd2text"><td class="memItemLeft" align="right" valign="top"><a class="el" href="stdint_8h.html#uint8_t">uint8_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="nes_2bcd_8h.html#bcd2text">bcd2text</a> (const <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *bcd, <a class="el" href="stdint_8h.html#uint8_t">uint8_t</a> tile_offset, <a class="el" href="stdint_8h.html#uint8_t">uint8_t</a> *buffer) <a class="el" href="asm_2types_8h.html#OLDCALL">OLDCALL</a></td></tr>
<tr class="separator:bcd2text"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p >Support for working with BCD (Binary Coded Decimal)</p>
<p >See the example BCD project for additional details. </p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="BCD_HEX" name="BCD_HEX"></a>
<h2 class="memtitle"><span class="permalink"><a href="#BCD_HEX">&#9670;&nbsp;</a></span>BCD_HEX</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">#define BCD_HEX</td>
<td>(</td>
<td class="paramtype">&#160;</td>
<td class="paramname">v</td><td>)</td>
<td>&#160;&#160;&#160;((<a class="el" href="gb_2bcd_8h.html#BCD">BCD</a>)(v))</td>
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</table>
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</div>
</div>
<a id="MAKE_BCD" name="MAKE_BCD"></a>
<h2 class="memtitle"><span class="permalink"><a href="#MAKE_BCD">&#9670;&nbsp;</a></span>MAKE_BCD</h2>
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<div class="memproto">
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<td class="memname">#define MAKE_BCD</td>
<td>(</td>
<td class="paramtype">&#160;</td>
<td class="paramname">v</td><td>)</td>
<td>&#160;&#160;&#160;<a class="el" href="sms_2bcd_8h.html#BCD_HEX">BCD_HEX</a>(0x ## v)</td>
</tr>
</table>
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<p >Converts an integer value into BCD format</p>
<p >A maximum of 8 digits may be used </p>
</div>
</div>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="BCD" name="BCD"></a>
<h2 class="memtitle"><span class="permalink"><a href="#BCD">&#9670;&nbsp;</a></span>BCD</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">typedef <a class="el" href="stdint_8h.html#uint32_t">uint32_t</a> <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="uint2bcd" name="uint2bcd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#uint2bcd">&#9670;&nbsp;</a></span>uint2bcd()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void uint2bcd </td>
<td>(</td>
<td class="paramtype"><a class="el" href="stdint_8h.html#uint16_t">uint16_t</a>&#160;</td>
<td class="paramname"><em>i</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *&#160;</td>
<td class="paramname"><em>value</em>&#160;</td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p >Converts integer <b>i</b> into BCD format (Binary Coded Decimal) </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">i</td><td>Numeric value to convert </td></tr>
<tr><td class="paramname">value</td><td>Pointer to a BCD variable to store the converted result </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="bcd_add" name="bcd_add"></a>
<h2 class="memtitle"><span class="permalink"><a href="#bcd_add">&#9670;&nbsp;</a></span>bcd_add()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void bcd_add </td>
<td>(</td>
<td class="paramtype"><a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *&#160;</td>
<td class="paramname"><em>sour</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *&#160;</td>
<td class="paramname"><em>value</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p >Adds two numbers in BCD format: <b>sour</b> += <b>value</b> </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sour</td><td>Pointer to a BCD value to add to (and where the result is stored) </td></tr>
<tr><td class="paramname">value</td><td>Pointer to the BCD value to add to <b>sour</b> </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="bcd_sub" name="bcd_sub"></a>
<h2 class="memtitle"><span class="permalink"><a href="#bcd_sub">&#9670;&nbsp;</a></span>bcd_sub()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void bcd_sub </td>
<td>(</td>
<td class="paramtype"><a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *&#160;</td>
<td class="paramname"><em>sour</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *&#160;</td>
<td class="paramname"><em>value</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p >Subtracts two numbers in BCD format: <b>sour</b> -= <b>value</b> </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sour</td><td>Pointer to a BCD value to subtract from (and where the result is stored) </td></tr>
<tr><td class="paramname">value</td><td>Pointer to the BCD value to subtract from <b>sour</b> </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="bcd2text" name="bcd2text"></a>
<h2 class="memtitle"><span class="permalink"><a href="#bcd2text">&#9670;&nbsp;</a></span>bcd2text()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="stdint_8h.html#uint8_t">uint8_t</a> bcd2text </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="gb_2bcd_8h.html#BCD">BCD</a> *&#160;</td>
<td class="paramname"><em>bcd</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="stdint_8h.html#uint8_t">uint8_t</a>&#160;</td>
<td class="paramname"><em>tile_offset</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="stdint_8h.html#uint8_t">uint8_t</a> *&#160;</td>
<td class="paramname"><em>buffer</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p >Convert a BCD number into an asciiz (null terminated) string and return the length </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">bcd</td><td>Pointer to BCD value to convert </td></tr>
<tr><td class="paramname">tile_offset</td><td>Optional per-character offset value to add (use 0 for none) </td></tr>
<tr><td class="paramname">buffer</td><td>Buffer to store the result in</td></tr>
</table>
</dd>
</dl>
<p>Returns: Length in characters (always 8)</p>
<p ><b>buffer</b> should be large enough to store the converted string (9 bytes: 8 characters + 1 for terminator)</p>
<p >There are a couple different ways to use <b>tile_offset</b>. For example: </p><ul>
<li>It can be the Index of the Font Tile '0' in VRAM to allow the buffer to be used directly with <a class="el" href="nes_8h.html#set_bkg_tiles">set_bkg_tiles</a>. </li>
<li>It can also be set to the ascii value for character '0' so that the buffer is a normal string that can be passed to <a class="el" href="stdio_8h.html#printf">printf</a>. </li>
</ul>
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