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      <sectiondef kind="func">
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        <type>void</type>
        <definition>void enable_fpu</definition>
        <argsstring>()</argsstring>
        <name>enable_fpu</name>
        <briefdescription>
<para>Enable floating point operations. </para>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="include/fpu.h" line="13" column="13" declfile="include/fpu.h" declline="13" declcolumn="13"/>
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        <definition>void enable_sse</definition>
        <argsstring>()</argsstring>
        <name>enable_sse</name>
        <briefdescription>
<para>Enable SSE. </para>
        </briefdescription>
        <detaileddescription>
<para><simplesect kind="warning"><para>Do not use, this is not stable! </para>
</simplesect>
</para>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="include/fpu.h" line="19" column="13" declfile="include/fpu.h" declline="19" declcolumn="13"/>
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        <type>uint8_t</type>
        <definition>uint8_t double_determine_decimal_places</definition>
        <argsstring>(double f)</argsstring>
        <name>double_determine_decimal_places</name>
        <param>
          <type>double</type>
          <declname>f</declname>
        </param>
        <briefdescription>
<para>Determine the approximate number of decimal places in a double value. This uses a very simple loop which repeatedly multiplies the value by ten, until all that remains is a whole number greater than or equal to 1. </para>
        </briefdescription>
        <detaileddescription>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>f</parametername>
</parameternamelist>
<parameterdescription>
<para>double to count decimal places </para>
</parameterdescription>
</parameteritem>
</parameterlist>
<simplesect kind="return"><para>uint8_t number of decimal places </para>
</simplesect>
</para>
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        <type>char *</type>
        <definition>char* double_to_string</definition>
        <argsstring>(double x, char *p, int64_t len, uint8_t precision)</argsstring>
        <name>double_to_string</name>
        <param>
          <type>double</type>
          <declname>x</declname>
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        <param>
          <type>char *</type>
          <declname>p</declname>
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        <param>
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          <declname>len</declname>
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        <param>
          <type>uint8_t</type>
          <declname>precision</declname>
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<para>Convert a doubleing point number to char* string, with a specified decimal precision. </para>
        </briefdescription>
        <detaileddescription>
<para>This function retains accuraccy by converting to 64 bit integers and string representations as early as possible, then operating on fixed-point representations of the floating point number. When we deal with fixed point, we don&apos;t lose accuraccy due to rounding.</para>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>x</parametername>
</parameternamelist>
<parameterdescription>
<para>Float to convert </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>p</parametername>
</parameternamelist>
<parameterdescription>
<para>Output buffer </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>len</parametername>
</parameternamelist>
<parameterdescription>
<para>Size of output buffer </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>precision</parametername>
</parameternamelist>
<parameterdescription>
<para>Precision of decimal part. Set to 0 to display full stored precision of the value. </para>
</parameterdescription>
</parameteritem>
</parameterlist>
<simplesect kind="return"><para>char* pointer to value in buffer </para>
</simplesect>
</para>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="include/fpu.h" line="49" column="6" declfile="include/fpu.h" declline="49" declcolumn="6"/>
      </memberdef>
      </sectiondef>
    <briefdescription>
    </briefdescription>
    <detaileddescription>
<para><simplesect kind="author"><para>Craig Edwards (<ulink url="mailto:craigedwards@brainbox.cc">craigedwards@brainbox.cc</ulink>) </para>
</simplesect>
<simplesect kind="copyright"><para>Copyright (c) 2012-2023 </para>
</simplesect>
</para>
    </detaileddescription>
    <location file="include/fpu.h"/>
  </compounddef>
</doxygen>
