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<div class="title"><h2>Global Functions in Global Namespace C++<br>
in Sourcefile math.h</h2>
</div><hr>
<dl class="member">
<dt class="member"><a name="rtl_math_acosh-1769"> </a>rtl_math_acosh</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_acosh</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns values of the inverse hyperbolic cosine.
</dd>
<dt>Description</dt>
<dd> acosh is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value x in the term acosh(x).
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_approxValue-1762"> </a>rtl_math_approxValue</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_approxValue</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Rounds value to 15 significant decimal digits.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value to be rounded.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_asinh-1768"> </a>rtl_math_asinh</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_asinh</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns values of the inverse hyperbolic sine.
</dd>
<dt>Description</dt>
<dd> asinh is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value x in the term asinh(x).
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_atanh-1765"> </a>rtl_math_atanh</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_atanh</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns more accurate atanh(x) for x near 0 than calculating
0.5*log((1+x)/(1-x)).
</dd>
<dt>Description</dt>
<dd>atanh is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre>The value x in the term atanh(x).
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_doubleToString-1752"> </a>rtl_math_doubleToString</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
void <strong>rtl_math_doubleToString</strong>(</dt>
<dd><table class="param-table">
<tr>
<td><a href="t-rtl_String.html">rtl_String</a> * * </td>
<td> pResult,</td>
</tr>
<tr>
<td><a href="t-sal_Int32.html">sal_Int32</a> *</td>
<td>pResultCapacity,</td>
</tr>
<tr>
<td><a href="t-sal_Int32.html">sal_Int32</a></td>
<td>nResultOffset,</td>
</tr>
<tr>
<td>double</td>
<td>fValue,</td>
</tr>
<tr>
<td><a href="e-rtl_math_StringFormat.html">rtl_math_StringFormat</a></td>
<td>eFormat,</td>
</tr>
<tr>
<td><a href="t-sal_Int32.html">sal_Int32</a></td>
<td>nDecPlaces,</td>
</tr>
<tr>
<td><a href="t-sal_Char.html">sal_Char</a></td>
<td>cDecSeparator,</td>
</tr>
<tr>
<td>const <a href="t-sal_Int32.html">sal_Int32</a> *</td>
<td>pGroups,</td>
</tr>
<tr>
<td><a href="t-sal_Char.html">sal_Char</a></td>
<td>cGroupSeparator,</td>
</tr>
<tr>
<td><a href="t-sal_Bool.html">sal_Bool</a></td>
<td>bEraseTrailingDecZeros );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Conversions analogous to sprintf() using internal rounding.
</dd>
<dt>Description</dt>
<dd> +/-HUGE_VAL are converted to "INF" and "-INF", NAN values are
converted to "NaN".
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pResult</td>
<td><pre> Returns the resulting byte string. Must itself not be null, and must point
to either null or a valid string.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pResultCapacity</td>
<td><pre> If null, pResult is considered to point to immutable strings, and a new
string will be allocated in pResult.
If non-null, it points to the current capacity of pResult, which is
considered to point to a string buffer (pResult must not itself be null in
this case, and must point to a string that has room for the given capacity).
The string representation of the given double value is inserted into pResult
at position nResultOffset. If pResult's current capacity is too small, a
new string buffer will be allocated in pResult as necessary, and
pResultCapacity will contain the new capacity on return.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">nResultOffset</td>
<td><pre> If pResult is used as a string buffer (i.e., pResultCapacity is non-null),
nResultOffset specifies the insertion offset within the buffer. Ignored
otherwise.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value to convert.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">eFormat</td>
<td><pre> The format to use, one of rtl_math_StringFormat.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">nDecPlaces</td>
<td><pre> The number of decimals to be generated. Effectively fValue is rounded at
this position, specifying nDecPlaces <= 0 accordingly rounds the value
before the decimal point and fills with zeros.
If eFormat == rtl_math_StringFormat_Automatic and nDecPlaces ==
rtl_math_DecimalPlaces_Max, the highest number of significant decimals
possible is generated.
If eFormat == rtl_math_StringFormat_G, nDecPlaces specifies the number of
significant digits instead. If nDecPlaces ==
rtl_math_DecimalPlaces_DefaultSignificance, the default number (currently 6
as implemented by most libraries) of significant digits is generated.
According to the ANSI C90 standard the E style will be used only if the
exponent resulting from the conversion is less than -4 or greater than or
equal to the precision. However, as opposed to the ANSI standard, trailing
zeros are not necessarily removed from the fractional portion of the result
unless bEraseTrailingDecZeros == true was specified.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cDecSeparator</td>
<td><pre> The decimal separator.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pGroups</td>
<td><pre> Either null (no grouping is used), or a null-terminated list of group
lengths. Each group length must be strictly positive. If the number of
digits in a conversion exceeds the specified range, the last (highest) group
length is repeated as needed. Values are applied from right to left, for a
grouping of 1,00,00,000 you'd have to specify pGroups={3,2,0}.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cGroupSeparator</td>
<td><pre> The group separator. Ignored if pGroups is null.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">bEraseTrailingDecZeros</td>
<td><pre> Trailing zeros in decimal places are erased.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_doubleToUString-1754"> </a>rtl_math_doubleToUString</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
void <strong>rtl_math_doubleToUString</strong>(</dt>
<dd><table class="param-table">
<tr>
<td><a href="t-rtl_uString.html">rtl_uString</a> * * </td>
<td> pResult,</td>
</tr>
<tr>
<td><a href="t-sal_Int32.html">sal_Int32</a> *</td>
<td>pResultCapacity,</td>
</tr>
<tr>
<td><a href="t-sal_Int32.html">sal_Int32</a></td>
<td>nResultOffset,</td>
</tr>
<tr>
<td>double</td>
<td>fValue,</td>
</tr>
<tr>
<td><a href="e-rtl_math_StringFormat.html">rtl_math_StringFormat</a></td>
<td>eFormat,</td>
</tr>
<tr>
<td><a href="t-sal_Int32.html">sal_Int32</a></td>
<td>nDecPlaces,</td>
</tr>
<tr>
<td><a href="t-sal_Unicode.html">sal_Unicode</a></td>
<td>cDecSeparator,</td>
</tr>
<tr>
<td>const <a href="t-sal_Int32.html">sal_Int32</a> *</td>
<td>pGroups,</td>
</tr>
<tr>
<td><a href="t-sal_Unicode.html">sal_Unicode</a></td>
<td>cGroupSeparator,</td>
</tr>
<tr>
<td><a href="t-sal_Bool.html">sal_Bool</a></td>
<td>bEraseTrailingDecZeros );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Conversions analogous to sprintf() using internal rounding.
</dd>
<dt>Description</dt>
<dd> +/-HUGE_VAL are converted to "INF" and "-INF", NAN values are
converted to "NaN".
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pResult</td>
<td><pre> Returns the resulting Unicode string. Must itself not be null, and must
point to either null or a valid string.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pResultCapacity</td>
<td><pre> If null, pResult is considered to point to immutable strings, and a new
string will be allocated in pResult.
If non-null, it points to the current capacity of pResult, which is
considered to point to a string buffer (pResult must not itself be null in
this case, and must point to a string that has room for the given capacity).
The string representation of the given double value is inserted into pResult
at position nResultOffset. If pResult's current capacity is too small, a
new string buffer will be allocated in pResult as necessary, and
pResultCapacity will contain the new capacity on return.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">nResultOffset</td>
<td><pre> If pResult is used as a string buffer (i.e., pResultCapacity is non-null),
nResultOffset specifies the insertion offset within the buffer. Ignored
otherwise.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value to convert.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">eFormat</td>
<td><pre> The format to use, one of rtl_math_StringFormat.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">nDecPlaces</td>
<td><pre> The number of decimals to be generated. Effectively fValue is rounded at
this position, specifying nDecPlaces <= 0 accordingly rounds the value
before the decimal point and fills with zeros.
If eFormat == rtl_math_StringFormat_Automatic and nDecPlaces ==
rtl_math_DecimalPlaces_Max, the highest number of significant decimals
possible is generated.
If eFormat == rtl_math_StringFormat_G, nDecPlaces specifies the number of
significant digits instead. If nDecPlaces ==
rtl_math_DecimalPlaces_DefaultSignificance, the default number (currently 6
as implemented by most libraries) of significant digits is generated.
According to the ANSI C90 standard the E style will be used only if the
exponent resulting from the conversion is less than -4 or greater than or
equal to the precision. However, as opposed to the ANSI standard, trailing
zeros are not necessarily removed from the fractional portion of the result
unless bEraseTrailingDecZeros == true was specified.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cDecSeparator</td>
<td><pre> The decimal separator.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pGroups</td>
<td><pre> Either null (no grouping is used), or a null-terminated list of group
lengths. Each group length must be strictly positive. If the number of
digits in a conversion exceeds the specified range, the last (highest) group
length is repeated as needed. Values are applied from right to left, for a
grouping of 1,00,00,000 you'd have to specify pGroups={3,2,0}.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cGroupSeparator</td>
<td><pre> The group separator. Ignored if pGroups is null.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">bEraseTrailingDecZeros</td>
<td><pre> Trailing zeros in decimal places are erased.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_erf-1766"> </a>rtl_math_erf</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_erf</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns values of the Errorfunction erf.
</dd>
<dt>Description</dt>
<dd> erf is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value x in the term erf(x).
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_erfc-1767"> </a>rtl_math_erfc</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_erfc</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns values of the complement Errorfunction erfc.
</dd>
<dt>Description</dt>
<dd> erfc is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value x in the term erfc(x).
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_expm1-1763"> </a>rtl_math_expm1</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_expm1</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns more accurate e^x-1 for x near 0 than calculating directly.
</dd>
<dt>Description</dt>
<dd> expm1 is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value x in the term e^x-1.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_log1p-1764"> </a>rtl_math_log1p</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_log1p</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Returns more accurate log(1+x) for x near 0 than calculating directly.
</dd>
<dt>Description</dt>
<dd> log1p is part of the C99 standard, but not provided by some compilers.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> The value x in the term log(1+x).
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_pow10Exp-1761"> </a>rtl_math_pow10Exp</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_pow10Exp</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue,</td>
</tr>
<tr>
<td>int</td>
<td>nExp );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Scales fVal to a power of 10 without calling pow() or div() for nExp values
between -16 and +16, providing a faster method.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre>The value to be raised.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">nExp</td>
<td><pre>The exponent.
</pre></td>
</tr>
</table>
</dd>
<dt>Return</dt>
<dd>
fVal * pow(10.0, nExp)
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_round-1760"> </a>rtl_math_round</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_round</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>double </td>
<td> fValue,</td>
</tr>
<tr>
<td>int</td>
<td>nDecPlaces,</td>
</tr>
<tr>
<td><a href="e-rtl_math_RoundingMode.html">rtl_math_RoundingMode</a></td>
<td>eMode );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Rounds a double value.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">fValue</td>
<td><pre> Specifies the value to be rounded.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">nDecPlaces</td>
<td><pre> Specifies the decimal place where rounding occurs. Must be in the range
-20 to +20, inclusive. Negative if rounding occurs before the decimal
point.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">eMode</td>
<td><pre> Specifies the rounding mode.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_stringToDouble-1756"> </a>rtl_math_stringToDouble</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_stringToDouble</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>const <a href="t-sal_Char.html">sal_Char</a> * </td>
<td> pBegin,</td>
</tr>
<tr>
<td>const <a href="t-sal_Char.html">sal_Char</a> *</td>
<td>pEnd,</td>
</tr>
<tr>
<td><a href="t-sal_Char.html">sal_Char</a></td>
<td>cDecSeparator,</td>
</tr>
<tr>
<td><a href="t-sal_Char.html">sal_Char</a></td>
<td>cGroupSeparator,</td>
</tr>
<tr>
<td><a href="e-rtl_math_ConversionStatus.html">rtl_math_ConversionStatus</a> *</td>
<td>pStatus,</td>
</tr>
<tr>
<td>const <a href="t-sal_Char.html">sal_Char</a> * *</td>
<td>pParsedEnd );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Conversion analogous to strtod(), convert a string representing a
decimal number into a double value.
</dd>
<dt>Description</dt>
<dd>Leading tabs (0x09) and spaces (0x20) are eaten. Overflow returns
+/-HUGE_VAL, underflow 0. In both cases pStatus is set to
rtl_math_ConversionStatus_OutOfRange, otherwise to
rtl_math_ConversionStatus_Ok. "INF", "-INF" and "+/-1.#INF" are
recognized as +/-HUGE_VAL, pStatus is set to
rtl_math_ConversionStatus_OutOfRange. "NaN" and "+/-1.#NAN" are
recognized and the value is set to +/-NAN, pStatus is set to
rtl_math_ConversionStatus_Ok.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pBegin</td>
<td><pre>Points to the start of the byte string to convert. Must not be null.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pEnd</td>
<td><pre>Points one past the end of the byte string to convert. The condition
pEnd >= pBegin must hold.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cDecSeparator</td>
<td><pre>The decimal separator.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cGroupSeparator</td>
<td><pre>The group (aka thousands) separator.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pStatus</td>
<td><pre>If non-null, returns the status of the conversion.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pParsedEnd</td>
<td><pre>If non-null, returns one past the position of the last character parsed
away. Thus if [pBegin..pEnd) only contains the numerical string to be
parsed, *pParsedEnd == pEnd on return. If no numerical (sub-)string is
found, *pParsedEnd == pBegin on return, even if there was leading
whitespace.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
<dl class="member">
<dt class="member"><a name="rtl_math_uStringToDouble-1758"> </a>rtl_math_uStringToDouble</dt>
<dd class="member"><dl>
<dt class="simple">extern "C"<br>
double <strong>rtl_math_uStringToDouble</strong>(</dt>
<dd><table class="param-table">
<tr>
<td>const <a href="t-sal_Unicode.html">sal_Unicode</a> * </td>
<td> pBegin,</td>
</tr>
<tr>
<td>const <a href="t-sal_Unicode.html">sal_Unicode</a> *</td>
<td>pEnd,</td>
</tr>
<tr>
<td><a href="t-sal_Unicode.html">sal_Unicode</a></td>
<td>cDecSeparator,</td>
</tr>
<tr>
<td><a href="t-sal_Unicode.html">sal_Unicode</a></td>
<td>cGroupSeparator,</td>
</tr>
<tr>
<td><a href="e-rtl_math_ConversionStatus.html">rtl_math_ConversionStatus</a> *</td>
<td>pStatus,</td>
</tr>
<tr>
<td>const <a href="t-sal_Unicode.html">sal_Unicode</a> * *</td>
<td>pParsedEnd );</td>
</tr>
</table>
</dd>
</dl>
<br>
</dd>
<dd class="member"><table class="flag-table" border="1" cellspacing="0">
<tr>
<td width="12%" class="flagname">virtual</td>
<td width="12%" class="flagname">abstract</td>
<td width="12%" class="flagname">const</td>
<td width="12%" class="flagname">volatile</td>
<td width="12%" class="flagname">template</td>
<td width="12%" class="flagname">static</td>
<td width="12%" class="flagname">inline</td>
<td width="12%" class="flagname">C-linkage</td>
</tr>
<tr>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagno">NO</td>
<td class="flagyes">YES</td>
</tr>
</table>
<br>
</dd>
<dd class="member"><dl>
<dt>Summary</dt>
<dd>Conversion analogous to strtod(), convert a string representing a
decimal number into a double value.
</dd>
<dt>Description</dt>
<dd>Leading tabs (U+0009) and spaces (U+0020) are eaten. Overflow returns
+/-HUGE_VAL, underflow 0. In both cases pStatus is set to
rtl_math_ConversionStatus_OutOfRange, otherwise to
rtl_math_ConversionStatus_Ok. "INF", "-INF" and "+/-1.#INF" are
recognized as +/-HUGE_VAL, pStatus is set to
rtl_math_ConversionStatus_OutOfRange. "NaN" and "+/-1.#NAN" are
recognized and the value is set to +/-NAN, pStatus is set to
rtl_math_ConversionStatus_Ok.
</dd>
<dt>Parameters</dt>
<dd><table border="0" width="100%" cellpadding="3" cellspacing="0" class="expl-table">
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pBegin</td>
<td><pre>Points to the start of the Unicode string to convert. Must not be null.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pEnd</td>
<td><pre>Points one past the end of the Unicode string to convert. The condition
pEnd >= pBegin must hold.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cDecSeparator</td>
<td><pre>The decimal separator.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">cGroupSeparator</td>
<td><pre>The group (aka thousands) separator.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pStatus</td>
<td><pre>If non-null, returns the status of the conversion.
</pre></td>
</tr>
<tr>
<td width="15%" style="vertical-align:top; font-weight:bold">pParsedEnd</td>
<td><pre>If non-null, returns one past the position of the last character parsed
away. Thus if [pBegin..pEnd) only contains the numerical string to be
parsed, *pParsedEnd == pEnd on return. If no numerical (sub-)string is
found, *pParsedEnd == pBegin on return, even if there was leading
whitespace.
</pre></td>
</tr>
</table>
</dd>
</dl>
</dd>
</dl>
<hr>
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