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<head>
<title>NSDecimalNumber class reference</title>
</head>
<body>
<font face="serif">
<a href="Base.html">Up</a>
<br />
<h1><a name="title$NSDecimalNumber">NSDecimalNumber class reference</a></h1>
<h3>Authors</h3>
<dl>
<dt>Fred Kiefer (<a href="mailto:FredKiefer@gmx.de"><code>FredKiefer@gmx.de</code></a>)</dt>
<dd>
</dd>
</dl>
<p><b>Copyright:</b> (C) 2000 Free Software Foundation, Inc.</p>
<div>
<hr width="50%" align="left" />
<h3>Contents -</h3>
<ol>
<li>
<a href="#001000000000">Software documentation for the NSDecimalNumber class</a>
</li>
<li>
<a href="#002000000000">Software documentation for the NSDecimalNumberHandler
class</a>
</li>
<li>
<a href="#003000000000">Software documentation for the
NSNumber(NSDecimalNumber) category</a>
</li>
<li>
<a href="#004000000000">Software documentation for the
NSDecimalNumberBehaviors protocol</a>
</li>
</ol>
<hr width="50%" align="left" />
</div>
<h1><a name="001000000000">
Software documentation for the NSDecimalNumber class
</a></h1>
<h2><a name="class$NSDecimalNumber">NSDecimalNumber</a> : <a rel="gsdoc" href="NSValue.html#class$NSNumber">NSNumber</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSDecimalNumber.h</dd>
</dl>
</blockquote>
<blockquote>
<dl>
<dt><b>Conforms to:</b></dt>
<dd><a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a></dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
</p>
<p>
<strong>Class</strong> that implements a number of
methods for performing decimal arithmetic to
arbitrary precision. The behavior in terms of
rounding choices and exception handling may be
customized using the
<a rel="gsdoc" href="#class$NSDecimalNumberHandler">NSDecimalNumberHandler</a>
class, and defaults to <a rel="gsdoc" href="#method$NSDecimalNumberHandler+defaultDecimalNumberHandler">[NSDecimalNumberHandler +defaultDecimalNumberHandler]</a>
. </p>
<p>
</p>
<p>
Equivalent functionality to the
<code>NSDecimalNumber</code> class may be accessed
through functions, mostly named
<code>NSDecimalXXX</code>, e.g.,
<a rel="gsdoc" href="Functions.html#function$NSDecimalMin">
NSDecimalMin()
</a>
. Both the class and the functions use a structure
called <code>NSDecimal</code>.
</p>
<p>
</p>
<p>
Note that instances of <code>NSDecimalNumber</code>
are immutable.
</p>
<p>
</div>
<hr width="50%" align="left" />
<a href="#_NSDecimalNumber_ivars">Instance Variables</a>
<br/><br/>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+decimalNumberWithDecimal$">+decimalNumberWithDecimal:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+decimalNumberWithMantissa$exponent$isNegative$">+decimalNumberWithMantissa:exponent:isNegative:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+decimalNumberWithString$">+decimalNumberWithString:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+decimalNumberWithString$locale$">+decimalNumberWithString:locale:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+defaultBehavior">+defaultBehavior</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+maximumDecimalNumber">+maximumDecimalNumber</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+minimumDecimalNumber">+minimumDecimalNumber</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+notANumber">+notANumber</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+one">+one</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+setDefaultBehavior$">+setDefaultBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber+zero">+zero</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-compare$">-compare:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByAdding$">-decimalNumberByAdding:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByAdding$withBehavior$">-decimalNumberByAdding:withBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByDividingBy$">-decimalNumberByDividingBy:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByDividingBy$withBehavior$">-decimalNumberByDividingBy:withBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByMultiplyingBy$">-decimalNumberByMultiplyingBy:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByMultiplyingBy$withBehavior$">-decimalNumberByMultiplyingBy:withBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByMultiplyingByPowerOf10$">-decimalNumberByMultiplyingByPowerOf10:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByMultiplyingByPowerOf10$withBehavior$">-decimalNumberByMultiplyingByPowerOf10:withBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByRaisingToPower$">-decimalNumberByRaisingToPower:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByRaisingToPower$withBehavior$">-decimalNumberByRaisingToPower:withBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberByRoundingAccordingToBehavior$">-decimalNumberByRoundingAccordingToBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberBySubtracting$">-decimalNumberBySubtracting:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalNumberBySubtracting$withBehavior$">-decimalNumberBySubtracting:withBehavior:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-decimalValue">-decimalValue</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-descriptionWithLocale$">-descriptionWithLocale:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-doubleValue">-doubleValue</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-initWithDecimal$">-initWithDecimal:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-initWithMantissa$exponent$isNegative$">-initWithMantissa:exponent:isNegative:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-initWithString$">-initWithString:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-initWithString$locale$">-initWithString:locale:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumber-objCType">-objCType</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSDecimalNumber+decimalNumberWithDecimal$">decimalNumberWithDecimal: </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberWithDecimal:</b> (NSDecimal)decimal;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
New instance with given value. Note an NSDecimal may be
created using the function
<a rel="gsdoc" href="Functions.html#function$NSDecimalFromString">
NSDecimalFromString()
</a>
.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+decimalNumberWithMantissa$exponent$isNegative$">decimalNumberWithMantissa: exponent: isNegative: </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberWithMantissa:</b> (unsigned long long)mantissa<b> exponent:</b> (short)exponent<b> isNegative:</b> (BOOL)isNegative;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
New instance by component. Note that the precision of
this initializer is limited.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+decimalNumberWithString$">decimalNumberWithString: </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberWithString:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)numericString;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
New instance from string. Arbitrary precision is
preserved, though calling one of the
<code>decimalNumberBy...</code> methods will return
a result constrained by the current
<em><code>scale</code></em>. Number format is parsed
according to current default locale.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+decimalNumberWithString$locale$">decimalNumberWithString: locale: </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberWithString:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)numericString<b> locale:</b> (<a rel="gsdoc" href="NSDictionary.html#class$NSDictionary">NSDictionary</a>*)locale;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
New instance from string. Arbitrary precision is
preserved, though calling one of the
<code>decimalNumberBy...</code> methods will return
a result constrained by the current
<em><code>scale</code></em>. Number format is parsed
according to given <var>locale</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+defaultBehavior">defaultBehavior </a></h3>
+ (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>) <b>defaultBehavior</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Returns the default rounding/precision/exception
handling behavior, which is same as
<a rel="gsdoc" href="#method$NSDecimalNumberHandler+defaultDecimalNumberHandler">[NSDecimalNumberHandler +defaultDecimalNumberHandler]</a>
unless it has been explicitly set otherwise.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+maximumDecimalNumber">maximumDecimalNumber </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>maximumDecimalNumber</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Return maximum positive value that can be
represented.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+minimumDecimalNumber">minimumDecimalNumber </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>minimumDecimalNumber</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Return minimum negative value (<em>not</em> the
smallest positive value) that can be represented.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+notANumber">notANumber </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>notANumber</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Return a fixed value representing an NaN.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+one">one </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>one</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Return a constant object with a value of one.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+setDefaultBehavior$">setDefaultBehavior: </a></h3>
+ (void) <b>setDefaultBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Sets the default rounding/precision/exception handling
<var>behavior</var> to the given <var>behavior</var>.
If this is not called, <var>behavior</var> defaults to
<a rel="gsdoc" href="#method$NSDecimalNumberHandler+defaultDecimalNumberHandler">[NSDecimalNumberHandler +defaultDecimalNumberHandler]</a>
.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber+zero">zero </a></h3>
+ (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>zero</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Return a constant object with a value of zero.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-compare$">compare: </a></h3>
- (<a rel="gsdoc" href="TypesAndConstants.html#type$NSComparisonResult">NSComparisonResult</a>) <b>compare:</b> (<a rel="gsdoc" href="NSValue.html#class$NSNumber">NSNumber</a>*)decimalNumber;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Compares with other number, returning less,
greater, or equal.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByAdding$">decimalNumberByAdding: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByAdding:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Adds self to <var>decimalNumber</var> and returns new
result, using
<a rel="gsdoc" href="#method$NSDecimalNumber+defaultBehavior">
+defaultBehavior
</a>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByAdding$withBehavior$">decimalNumberByAdding: withBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByAdding:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber<b> withBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Adds self to <var>decimalNumber</var> and returns new
result, using given <var>behavior</var> for
rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByDividingBy$">decimalNumberByDividingBy: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByDividingBy:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Divides self by <var>decimalNumber</var> and
returns new result, using
<a rel="gsdoc" href="#method$NSDecimalNumber+defaultBehavior">
+defaultBehavior
</a>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByDividingBy$withBehavior$">decimalNumberByDividingBy: withBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByDividingBy:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber<b> withBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Divides self by <var>decimalNumber</var> and
returns new result, using given <var>behavior</var>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByMultiplyingBy$">decimalNumberByMultiplyingBy: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByMultiplyingBy:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Multiplies self by <var>decimalNumber</var> and
returns new result, using
<a rel="gsdoc" href="#method$NSDecimalNumber+defaultBehavior">
+defaultBehavior
</a>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByMultiplyingBy$withBehavior$">decimalNumberByMultiplyingBy: withBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByMultiplyingBy:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber<b> withBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Multiplies self by <var>decimalNumber</var> and
returns new result, using given <var>behavior</var>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByMultiplyingByPowerOf10$">decimalNumberByMultiplyingByPowerOf10: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByMultiplyingByPowerOf10:</b> (short)power;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Multiplies self by given <var>power</var> of 10
and returns new result, using
<a rel="gsdoc" href="#method$NSDecimalNumber+defaultBehavior">
+defaultBehavior
</a>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByMultiplyingByPowerOf10$withBehavior$">decimalNumberByMultiplyingByPowerOf10: withBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByMultiplyingByPowerOf10:</b> (short)power<b> withBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Multiplies self by given <var>power</var> of 10
and returns new result, using given <var>behavior</var>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByRaisingToPower$">decimalNumberByRaisingToPower: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByRaisingToPower:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)power;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Raises self to given positive integer
<var>power</var> and returns new result, using
<a rel="gsdoc" href="#method$NSDecimalNumber+defaultBehavior">
+defaultBehavior
</a>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByRaisingToPower$withBehavior$">decimalNumberByRaisingToPower: withBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByRaisingToPower:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)power<b> withBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Raises self to given positive integer
<var>power</var> and returns new result, using given
<var>behavior</var> for rounding/precision/error
handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberByRoundingAccordingToBehavior$">decimalNumberByRoundingAccordingToBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberByRoundingAccordingToBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Returns rounded version of underlying decimal.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberBySubtracting$">decimalNumberBySubtracting: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberBySubtracting:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Subtracts <var>decimalNumber</var> from self and
returns new result, using
<a rel="gsdoc" href="#method$NSDecimalNumber+defaultBehavior">
+defaultBehavior
</a>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalNumberBySubtracting$withBehavior$">decimalNumberBySubtracting: withBehavior: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>decimalNumberBySubtracting:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)decimalNumber<b> withBehavior:</b> (id<<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a>>)behavior;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Subtracts <var>decimalNumber</var> from self and
returns new result, using given <var>behavior</var>
for rounding/precision/error handling.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-decimalValue">decimalValue </a></h3>
- (NSDecimal) <b>decimalValue</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Return underlying value as an <code>NSDecimal</code>
structure.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-descriptionWithLocale$">descriptionWithLocale: </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>descriptionWithLocale:</b> (id)locale;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Returns string version of number formatted
according to <var>locale</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-doubleValue">doubleValue </a></h3>
- (double) <b>doubleValue</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Returns underlying value as a
<code><strong>double</strong></code>, which may be
an approximation if precision greater than the default
of 38.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-initWithDecimal$">initWithDecimal: </a></h3>
- (id) <b>initWithDecimal:</b> (NSDecimal)decimal;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Initialize with given value. Note an NSDecimal
may be created using the function
<a rel="gsdoc" href="Functions.html#function$NSDecimalFromString">
NSDecimalFromString()
</a>
.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-initWithMantissa$exponent$isNegative$">initWithMantissa: exponent: isNegative: </a></h3>
- (id) <b>initWithMantissa:</b> (unsigned long long)mantissa<b> exponent:</b> (short)exponent<b> isNegative:</b> (BOOL)flag;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Initialize by component. Note that the precision
of this initializer is limited.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-initWithString$">initWithString: </a></h3>
- (id) <b>initWithString:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)numberValue;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Initialize from string. Arbitrary precision is
preserved, though calling one of the
<code>decimalNumberBy...</code> methods will return
a result constrained by the current
<em><code>scale</code></em>. Number format is parsed
according to current default locale.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-initWithString$locale$">initWithString: locale: </a></h3>
- (id) <b>initWithString:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)numberValue<b> locale:</b> (<a rel="gsdoc" href="NSDictionary.html#class$NSDictionary">NSDictionary</a>*)locale;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Initialize from string. Arbitrary precision is
preserved, though calling one of the
<code>decimalNumberBy...</code> methods will return
a result constrained by the current
<em><code>scale</code></em>. Number format is parsed
according to given <var>locale</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumber-objCType">objCType </a></h3>
- (const char*) <b>objCType</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Returns the Objective-C type (
<code>@encode(...)</code> compatible) of the data
contained <code>NSDecimalNumber</code>, which is
by convention "d" (for <strong>double</strong>), even
though this is not strictly accurate.
</div>
<hr width="25%" align="left" />
</div>
<a name="_NSDecimalNumber_ivars"/> <br/><hr width="50%" align="left" />
<h2>Instance Variables for NSDecimalNumber Class</h2>
<h3><a name="ivariable$NSDecimalNumber*data">data</a></h3>
@protected NSDecimal <b>data</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<hr width="25%" align="left" />
<br/><hr width="50%" align="left" /><br/>
<h1><a name="002000000000">
Software documentation for the NSDecimalNumberHandler
class
</a></h1>
<h2><a name="class$NSDecimalNumberHandler">NSDecimalNumberHandler</a> : <a rel="gsdoc" href="NSObject.html#class$NSObject">NSObject</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSDecimalNumber.h</dd>
</dl>
</blockquote>
<blockquote>
<dl>
<dt><b>Conforms to:</b></dt>
<dd><a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a></dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
A utility class adopting
<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)"><NSDecimalNumberBehaviors></a>
protocol. Can be used to control
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
rounding and exception-handling behavior, by
passing an instance as an argument to any
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
method ending with <code>...Behavior:</code>.
</div>
<hr width="50%" align="left" />
<a href="#_NSDecimalNumberHandler_ivars">Instance Variables</a>
<br/><br/>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumberHandler+decimalNumberHandlerWithRoundingMode$scale$raiseOnExactness$raiseOnOverflow$raiseOnUnderflow$raiseOnDivideByZero$">+decimalNumberHandlerWithRoundingMode:scale:raiseOnExactness:raiseOnOverflow:raiseOnUnderflow:raiseOnDivideByZero:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumberHandler+defaultDecimalNumberHandler">+defaultDecimalNumberHandler</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSDecimalNumberHandler-initWithRoundingMode$scale$raiseOnExactness$raiseOnOverflow$raiseOnUnderflow$raiseOnDivideByZero$">-initWithRoundingMode:scale:raiseOnExactness:raiseOnOverflow:raiseOnUnderflow:raiseOnDivideByZero:</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSDecimalNumberHandler+decimalNumberHandlerWithRoundingMode$scale$raiseOnExactness$raiseOnOverflow$raiseOnUnderflow$raiseOnDivideByZero$">decimalNumberHandlerWithRoundingMode: scale: raiseOnExactness: raiseOnOverflow: raiseOnUnderflow: raiseOnDivideByZero: </a></h3>
+ (id) <b>decimalNumberHandlerWithRoundingMode:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSRoundingMode">NSRoundingMode</a>)roundingMode<b> scale:</b> (short)scale<b> raiseOnExactness:</b> (BOOL)raiseOnExactness<b> raiseOnOverflow:</b> (BOOL)raiseOnOverflow<b> raiseOnUnderflow:</b> (BOOL)raiseOnUnderflow<b> raiseOnDivideByZero:</b> (BOOL)raiseOnDivideByZero;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Constructor setting all behavior. (For more
precise control over error handling, create your
own class implementing the
<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)"><NSDecimalNumberBehaviors></a>
protocol.)
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumberHandler+defaultDecimalNumberHandler">defaultDecimalNumberHandler </a></h3>
+ (id) <b>defaultDecimalNumberHandler</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Provides an instance implementing the default
behavior for the
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
class. 38 decimal digits, rounded to closest
return value (<code>NSRoundPlain</code>).
Exceptions raised on overflow, underflow, and
divide by zero.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSDecimalNumberHandler-initWithRoundingMode$scale$raiseOnExactness$raiseOnOverflow$raiseOnUnderflow$raiseOnDivideByZero$">initWithRoundingMode: scale: raiseOnExactness: raiseOnOverflow: raiseOnUnderflow: raiseOnDivideByZero: </a></h3>
- (id) <b>initWithRoundingMode:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSRoundingMode">NSRoundingMode</a>)roundingMode<b> scale:</b> (short)scale<b> raiseOnExactness:</b> (BOOL)raiseOnExactness<b> raiseOnOverflow:</b> (BOOL)raiseOnOverflow<b> raiseOnUnderflow:</b> (BOOL)raiseOnUnderflow<b> raiseOnDivideByZero:</b> (BOOL)raiseOnDivideByZero;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Initializer setting all behavior. (For more
precise control over error handling, create your
own class implementing the
<a rel="gsdoc" href="#protocol$(NSDecimalNumberBehaviors)"><NSDecimalNumberBehaviors></a>
protocol.)
</div>
<hr width="25%" align="left" />
</div>
<a name="_NSDecimalNumberHandler_ivars"/> <br/><hr width="50%" align="left" />
<h2>Instance Variables for NSDecimalNumberHandler Class</h2>
<h3><a name="ivariable$NSDecimalNumberHandler*_raiseOnDivideByZero">_raiseOnDivideByZero</a></h3>
@protected BOOL <b>_raiseOnDivideByZero</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSDecimalNumberHandler*_raiseOnExactness">_raiseOnExactness</a></h3>
@protected BOOL <b>_raiseOnExactness</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSDecimalNumberHandler*_raiseOnOverflow">_raiseOnOverflow</a></h3>
@protected BOOL <b>_raiseOnOverflow</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSDecimalNumberHandler*_raiseOnUnderflow">_raiseOnUnderflow</a></h3>
@protected BOOL <b>_raiseOnUnderflow</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSDecimalNumberHandler*_roundingMode">_roundingMode</a></h3>
@protected NSRoundingMode <b>_roundingMode</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSDecimalNumberHandler*_scale">_scale</a></h3>
@protected short int <b>_scale</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<br/><hr width="50%" align="left" /><br/>
<h1><a name="003000000000">
Software documentation for the
NSNumber(NSDecimalNumber) category
</a></h1>
<h2><a rel="gsdoc" href="NSValue.html#class$NSNumber">NSNumber</a>(<a name="category$NSNumber(NSDecimalNumber)">NSDecimalNumber</a>)</h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSDecimalNumber.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Interface for obtaining an NSDecimalNumber value
from an ordinary NSNumber.
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$NSNumber(NSDecimalNumber)-decimalValue">-decimalValue</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSNumber(NSDecimalNumber)-decimalValue">decimalValue </a></h3>
- (NSDecimal) <b>decimalValue</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Obtaining an NSDecimalNumber version of an
ordinary NSNumber. <br /> Returns an NSDecimal
representation of the number. Float and
<strong>double</strong> values may not be
converted exactly
</div>
<hr width="25%" align="left" />
</div>
<h1><a name="004000000000">
Software documentation for the
NSDecimalNumberBehaviors protocol
</a></h1>
<h2><a name="protocol$(NSDecimalNumberBehaviors)">NSDecimalNumberBehaviors</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSDecimalNumber.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
This protocol encapsulates information about how an
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
should round and process exceptions. Usually you can
just create objects of the
<a rel="gsdoc" href="#class$NSDecimalNumberHandler">NSDecimalNumberHandler</a>
class, which implements this protocol, but if you
don't want to use that class you can create your
own implementing it.
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$(NSDecimalNumberBehaviors)-exceptionDuringOperation$error$leftOperand$rightOperand$">-exceptionDuringOperation:error:leftOperand:rightOperand:</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$(NSDecimalNumberBehaviors)-roundingMode">-roundingMode</a></li>
<li><a rel="gsdoc" href="NSDecimalNumber.html#method$(NSDecimalNumberBehaviors)-scale">-scale</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$(NSDecimalNumberBehaviors)-exceptionDuringOperation$error$leftOperand$rightOperand$">exceptionDuringOperation: error: leftOperand: rightOperand: </a></h3>
- (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*) <b>exceptionDuringOperation:</b> (SEL)method<b> error:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSCalculationError">NSCalculationError</a>)error<b> leftOperand:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)leftOperand<b> rightOperand:</b> (<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>*)rightOperand;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
</p>
<p>
Specifies behavior when, in the course of
applying <var>method</var> to
<var>leftOperand</var> and <var>rightOperand</var>,
an
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
instance encounters given <var>error</var>. </p>
<p>
</p>
<p>
<var>error</var> has four possible constant
values:
</p>
<p>
<dl>
<dt>
<code>NSCalculationLossOfPrecision</code>
</dt>
<dd>
The number can't be represented in 38 significant
digits.
</dd>
<dt><code>NSCalculationOverflow</code></dt>
<dd>
The number is too large to represent.
</dd>
<dt><code>NSCalculationUnderflow</code></dt>
<dd>
The number is too small to represent.
</dd>
<dt>
<code>NSCalculationDivideByZero</code>
</dt>
<dd>
The caller tried to divide by 0.
</dd>
</dl>
</p>
<p>
Behavior on <var>error</var> can be one of the
following:
</p>
<p>
<ul>
<li>
Raise an exception.
</li>
<li>
Return <code>nil</code>. The calling
<var>method</var> will return its value as
though no <var>error</var> had occurred. If
<var>error</var> is
<code>NSCalculationLossOfPrecision</code>,
<var>method</var> will return an imprecise
value, constrained to 38 significant digits.
If <var>error</var> is
<code>NSCalculationUnderflow</code> or
<code>NSCalculationOverflow</code>,
<var>method</var> will return
<code>NSDecimalNumber</code> 's
<code>notANumber</code>. You shouldn't return
<code>nil</code> if <var>error</var> is
<code>NSDivideByZero</code>.
</li>
<li>
Correct the <var>error</var> and return a
valid <code>NSDecimalNumber</code>. The calling
<var>method</var> will use this as its own
return value.
</li>
</ul>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$(NSDecimalNumberBehaviors)-roundingMode">roundingMode </a></h3>
- (<a rel="gsdoc" href="TypesAndConstants.html#type$NSRoundingMode">NSRoundingMode</a>) <b>roundingMode</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Specifies how
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
's <code>decimalNumberBy...</code> methods round their
return values. This should be set to one of the
following constants:
<dl>
<dt><code>NSRoundDown</code></dt>
<dd>
Always round down.
</dd>
<dt><code>NSRoundUp</code></dt>
<dd>
Always round up.
</dd>
<dt><code>NSRoundPlain</code></dt>
<dd>
Round to the closest possible return value.
Halfway (e.g..5) rounds up for positive
numbers, down for negative (towards larger
absolute value).
</dd>
<dt><code>NSRoundBankers</code></dt>
<dd>
Round to the closest possible return value, but
halfway (e.g..5) rounds towards possibility
whose last digit is even.
</dd>
</dl>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$(NSDecimalNumberBehaviors)-scale">scale </a></h3>
- (short) <b>scale</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Specifies the precision of the values returned by
<a rel="gsdoc" href="#class$NSDecimalNumber">NSDecimalNumber</a>
's <code>decimalNumberBy...</code> methods, in terms
of the number of digits allowed after the decimal
point. This can be negative, implying that the
precision should be, e.g., 100's, 1000's, etc..
For unlimited precision, set to
<code>NSDecimalNoScale</code>.
</div>
<hr width="25%" align="left" />
</div>
<br />
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