System Variable FPC - Revision history

Paul Robinson at 23:03, 13 October 2019

2019-10-13T23:03:19Z

← Older revision		Revision as of 19:03, 13 October 2019
Line 57:		Line 57:

	{{System Variables}}		{{System Variables}}
	{{Article footer\|X\|0}}		{{Article footer\|0\|NO}}
	[[Category:System functions\|FPC]] [[Category:Math functions\|FPC]]		[[Category:System functions\|FPC]] [[Category:Math functions\|FPC]]

Paul Robinson: Fix cat sorting

2019-10-13T17:16:59Z

Fix cat sorting

← Older revision		Revision as of 13:16, 13 October 2019
Line 58:		Line 58:
	{{System Variables}}		{{System Variables}}
	{{Article footer\|X\|0}}		{{Article footer\|X\|0}}
	[[Category:System functions]] [[Category:Math functions]]		[[Category:System functions\|FPC]] [[Category:Math functions\|FPC]]

Paul Robinson: Fix footer, add categories

2019-10-13T17:11:42Z

Fix footer, add categories

← Older revision		Revision as of 13:11, 13 October 2019
Line 57:		Line 57:

	{{System Variables}}		{{System Variables}}
	{{Article footer}}		{{Article footer\|X\|0}}
			[[Category:System functions]] [[Category:Math functions]]

WikiSysop at 21:21, 11 July 2019

2019-07-11T21:21:11Z

← Older revision		Revision as of 17:21, 11 July 2019
Line 19:		Line 19:
	</p>		</p>

	<p>The minimum value for <apll>⎕FPC</apll> is <apll>1</apll>; the maximum value is the ~~largest positive 32-bit~~ integer <apll>~~2147483647~~</apll>.</p>		<p>The minimum value for <apll>⎕FPC</apll> is <apll>1</apll>; the maximum value is the integer <apll>1073741695 ←→ ¯129+2*30 ←→ 16<_b/>3FFFFF7F</apll>.</p>

	<p>The system default value is <apll>128</apll>.</p>		<p>The system default value is <apll>128</apll>.</p>


	<p>For example~~, (note~~: ~~these numbers are normally one long string of digits; they are broken here, with the break shown by '''(continued)''' for your convenience in reading)~~</p>		<p>For example:</p>

	<apll><pre>		<apll><pre>
	⎕PP←240		&ensp;&ensp; ⎕PP←240
	⎕FPC←64 ⋄ *1x		&ensp;&ensp; ⎕FPC←64 ⋄ *1<_x/>
	2.7182818284590452354		&ensp;&ensp;2.7182818284590452354
	⎕FPC←128 ⋄ *1x		&ensp;&ensp; ⎕FPC←128 ⋄ *1<_x/>
	2.71828182845904523536028747135266249776		&ensp;&ensp;2.71828182845904523536028747135266249776
	⎕FPC←256 ⋄ *1x		&ensp;&ensp; ⎕FPC←256 ⋄ *1<_x/>
	2.71828182845904523536028747135266249775724709369995957496696762 ~~(Continued)~~		&ensp;&ensp;2.71828182845904523536028747135266249775724709369995957496696762
	772407663035355		<_lc/> 772407663035355
	⎕FPC←512 ⋄ *1x		&ensp;&ensp; ⎕FPC←512 ⋄ *1<_x/>
	2.71828182845904523536028747135266249775724709369995957496696762 ~~(Continued)~~		&ensp;&ensp;2.71828182845904523536028747135266249775724709369995957496696762
	~~7724076630353547594571382178525166427427466391932003059921817413 (Continued)~~		<_lc/> 7724076630353547594571382178525166427427466391932003059921
	~~5966290435729003342952605956~~		<_lc/> 8174135966290435729003342952605956
	⎕FPC←1024 ⋄ *1x		&ensp;&ensp; ⎕FPC←1024 ⋄ *1<_x/>
	2.71828182845904523536028747135266249775724709369995957496696762 ~~(Continued)~~		&ensp;&ensp;2.71828182845904523536028747135266249775724709369995957496696762
	~~7724076630353547594571382178525166427427466391932003059921817413 (Continued)~~		<_lc/> 7724076630353547594571382178525166427427466391932003059921
	~~5966290435729003342952605956307381323286279434907632338298807531 (Continued)~~		<_lc/> 8174135966290435729003342952605956307381323286279434907632
	~~9525101901157383418793070215408914993488416750924~~</pre></apll>		<_lc/> 3382988075319525101901157383418793070215408914993488416750
			<_lc/> 924</pre></apll>

	<p>Whereas, according to Wolfram Alpha, the exact value to 230 digits is</p>		<p>Whereas, according to Wolfram Alpha, the exact value to 230 digits is</p>

	<apll><pre>2.71828182845904523536028747135266249775724709369995957496696762 ~~(Continued)~~		<apll><pre>&ensp;&ensp;2.71828182845904523536028747135266249775724709369995957496696762
	~~7724076630353547594571382178525166427427466391932003059921817413 (Continued)~~		<_lc/> 7724076630353547594571382178525166427427466391932003059921
	~~5966290435729003342952605956307381323286279434907632338298807531 (Continued)~~		<_lc/> 8174135966290435729003342952605956307381323286279434907632
	~~9525101901157383418793070215408914993488~~...</pre></apll>		<_lc/> 3382988075319525101901157383418793070215408914993488...</pre></apll>

	'''See Also: [[System_Variable_CT\|Comparison Tolerance ⎕CT]]'''		'''See Also: [[System_Variable_CT\|Comparison Tolerance ⎕CT]]'''

Drab at 09:58, 26 October 2018

2018-10-26T09:58:16Z

← Older revision		Revision as of 05:58, 26 October 2018
Line 16:		Line 16:

	<p>		<p>
	The approximate number of digits of precision for a given value of ⎕FPC is about 10⍟2⎕FPC. The value of ⎕FPC for a given required precision is about ⌈2⍟10digits.		The approximate number of digits of precision for a given value of <apll>⎕FPC</apll> is about <apll>10⍟2⎕FPC</apll>. The value of <apll>⎕FPC</apll> for a given required precision is about <apll>⌈2⍟10digits</apll>.
	</p>		</p>

Drab at 09:56, 26 October 2018

2018-10-26T09:56:39Z

← Older revision		Revision as of 05:56, 26 October 2018
Line 14:		Line 14:
	\|}		\|}
	<br />		<br />

			<p>
			The approximate number of digits of precision for a given value of ⎕FPC is about 10⍟2⎕FPC. The value of ⎕FPC for a given required precision is about ⌈2⍟10digits.
			</p>

	<p>The minimum value for <apll>⎕FPC</apll> is <apll>1</apll>; the maximum value is the largest positive 32-bit integer <apll>2147483647</apll>.</p>		<p>The minimum value for <apll>⎕FPC</apll> is <apll>1</apll>; the maximum value is the largest positive 32-bit integer <apll>2147483647</apll>.</p>

WikiSysop at 17:16, 16 April 2018

2018-04-16T17:16:15Z

← Older revision		Revision as of 13:16, 16 April 2018
Line 1:		Line 1:
	<h1>~~{quad}FPC~~ - Floating Point Control</h1>		<h1><aplxx>⎕FPC</aplxx> - Floating Point Control</h1>
	{{BoxStart\|<apll>Z←⎕FPC</apll>		{{BoxStart\|<apll>Z←⎕FPC</apll>
	\|returns the current value of the Floating Point Control precision.}}		\|returns the current value of the Floating Point Control precision.}}
	{{BoxEnd\|<apll>Z</apll> is an integer scalar that represents the current value of the number of bits of precision used for [[Rational and VFP Numbers\|~~VFP~~ numbers]].}}		{{BoxEnd\|<apll>Z</apll> is an integer scalar that represents the current value of the number of bits of precision used for [[Rational and VFP Numbers\|Multiple-Precision Floating Point numbers]].}}
	<br />		<br />

Line 15:		Line 15:
	<br />		<br />

	<p>The minimum value for <apll>⎕FPC</apll> is <apll>53</apll>; the maximum value is the largest positive 32-bit integer <apll>2147483647</apll>.</p>		<p>The minimum value for <apll>⎕FPC</apll> is <apll>1</apll>; the maximum value is the largest positive 32-bit integer <apll>2147483647</apll>.</p>

	<p>The system default value is <apll>128</apll>.</p>		<p>The system default value is <apll>128</apll>.</p>
Line 22:		Line 22:
	<p>For example, (note: these numbers are normally one long string of digits; they are broken here, with the break shown by '''(continued)''' for your convenience in reading)</p>		<p>For example, (note: these numbers are normally one long string of digits; they are broken here, with the break shown by '''(continued)''' for your convenience in reading)</p>

	<apll>~~      ⎕PP←240~~<~~br /~~>		<apll><pre>
	~~      ~~⎕FPC←64 ~~ ~~⋄ *1x~~<br />~~		⎕PP←240
	2.~~71828182845904523543<br />~~		⎕FPC←64 ⋄ *1x
	~~      ~~⎕FPC←128 ⋄ *1x~~<br />~~		2.7182818284590452354
	2.~~718281828459045235360287471352662497759<br />~~		⎕FPC←128 ⋄ *1x
	~~      ~~⎕FPC←256 ⋄ *1x~~<br />~~		2.71828182845904523536028747135266249776
	2.71828182845904523536028747135266249775724709369995957496696762 (Continued)~~<br/>~~		⎕FPC←256 ⋄ *1x
	~~7724076630353555<br />~~		2.71828182845904523536028747135266249775724709369995957496696762 (Continued)
	~~      ~~⎕FPC←512 ⋄ *1x~~<br />~~		772407663035355
	2.71828182845904523536028747135266249775724709369995957496696762 (Continued)~~<br/>~~		⎕FPC←512 ⋄ *1x
	7724076630353547594571382178525166427427466391932003059921817413 (Continued)~~<br/>~~		2.71828182845904523536028747135266249775724709369995957496696762 (Continued)
	~~59662904357290033429526059559<br />~~		7724076630353547594571382178525166427427466391932003059921817413 (Continued)
	~~      ~~⎕FPC←1024 ⋄ *1x~~<br />~~		5966290435729003342952605956
	2.71828182845904523536028747135266249775724709369995957496696762 (Continued)~~<br/>~~		⎕FPC←1024 ⋄ *1x
	7724076630353547594571382178525166427427466391932003059921817413 (Continued)~~<br/>~~		2.71828182845904523536028747135266249775724709369995957496696762 (Continued)
	5966290435729003342952605956307381323286279434907632338298807531 (Continued)<br/>		7724076630353547594571382178525166427427466391932003059921817413 (Continued)
	~~9525101901157383418793070215408914993488416750924~~</apll>		5966290435729003342952605956307381323286279434907632338298807531 (Continued)
			9525101901157383418793070215408914993488416750924</pre></apll>

	<p>Whereas, according to Wolfram Alpha, the exact value to 230 digits is</p>		<p>Whereas, according to Wolfram Alpha, the exact value to 230 digits is</p>

	<apll>2.71828182845904523536028747135266249775724709369995957496696762 (Continued)~~<br/>~~		<apll><pre>2.71828182845904523536028747135266249775724709369995957496696762 (Continued)
	7724076630353547594571382178525166427427466391932003059921817413 (Continued)~~<br/>~~		7724076630353547594571382178525166427427466391932003059921817413 (Continued)
	5966290435729003342952605956307381323286279434907632338298807531 (Continued)~~<br/>~~		5966290435729003342952605956307381323286279434907632338298807531 (Continued)
	9525101901157383418793070215408914993488...</~~apll~~><br />~~<br>~~		9525101901157383418793070215408914993488...</pre></apll>
	'''See Also: [[System_Variable_CT\|Comparison Tolerance ⎕CT]]'''~~<br>~~
			'''See Also: [[System_Variable_CT\|Comparison Tolerance ⎕CT]]'''


	{{System Variables}}		{{System Variables}}
	{{Article footer}}		{{Article footer}}

Robert Wallick: Added see also ⎕CT

2015-02-12T05:29:25Z

Added see also ⎕CT

← Older revision		Revision as of 01:29, 12 February 2015
Line 45:		Line 45:
	7724076630353547594571382178525166427427466391932003059921817413 (Continued)<br/>		7724076630353547594571382178525166427427466391932003059921817413 (Continued)<br/>
	5966290435729003342952605956307381323286279434907632338298807531 (Continued)<br/>		5966290435729003342952605956307381323286279434907632338298807531 (Continued)<br/>
	9525101901157383418793070215408914993488...</apll><br />		9525101901157383418793070215408914993488...</apll><br /><br>
			'''See Also: [[System_Variable_CT\|Comparison Tolerance ⎕CT]]'''<br>


	{{System Variables}}		{{System Variables}}
	{{Article footer}}		{{Article footer}}

WikiSysop at 19:49, 25 May 2013

2013-05-25T19:49:10Z

← Older revision		Revision as of 15:49, 25 May 2013
Line 20:		Line 20:


	<p>For example, (note: these numbers are normally one long string of digits; they are broken here, with the break shown by '''{continued)''' for your convenience in reading)</p>		<p>For example, (note: these numbers are normally one long string of digits; they are broken here, with the break shown by '''(continued)''' for your convenience in reading)</p>

	<apll>      ~~⎕PP←200~~<br />		<apll>      ⎕PP←240<br />
	⎕FPC←64  ⋄ *1x<br />		⎕FPC←64  ⋄ *1x<br />
	2.71828182845904523543<br />		2.71828182845904523543<br />
Line 28:		Line 28:
	2.718281828459045235360287471352662497759<br />		2.718281828459045235360287471352662497759<br />
	⎕FPC←256 ⋄ *1x<br />		⎕FPC←256 ⋄ *1x<br />
	2.~~71828182845904523536028747135266249775724709369995957~~ (Continued)<br/>~~4966967627724076630353555~~<br />		2.71828182845904523536028747135266249775724709369995957496696762 (Continued)<br/>
			7724076630353555<br />
	⎕FPC←512 ⋄ *1x<br />		⎕FPC←512 ⋄ *1x<br />
	2.~~71828182845904523536028747135266249775724709369995957~~ (Continued)<br/>		2.71828182845904523536028747135266249775724709369995957496696762 (Continued)<br/>
	~~49669676277240766303535475945713821785251664274274663919~~ (Continued)<br/>		7724076630353547594571382178525166427427466391932003059921817413 (Continued)<br/>
	~~3200305992181741359662904357290033429526059559~~</apll>		59662904357290033429526059559<br />
			⎕FPC←1024 ⋄ *1x<br />
			2.71828182845904523536028747135266249775724709369995957496696762 (Continued)<br/>
			7724076630353547594571382178525166427427466391932003059921817413 (Continued)<br/>
			5966290435729003342952605956307381323286279434907632338298807531 (Continued)<br/>
			9525101901157383418793070215408914993488416750924</apll>

	<p>Whereas, according to Wolfram Alpha, the exact value to 230 digits is</p>		<p>Whereas, according to Wolfram Alpha, the exact value to 230 digits is</p>

	<apll>2.~~71828182845904523536028747135266249775724709369995957496~~ (Continued)<br/>		<apll>2.71828182845904523536028747135266249775724709369995957496696762 (Continued)<br/>
	~~6967627724076630353547594571382178525166427427466391932003059921~~ (Continued)<br/>		7724076630353547594571382178525166427427466391932003059921817413 (Continued)<br/>
	~~8174135966290435729003342952605956307381323286279434907632338298~~ (Continued)<br/>		5966290435729003342952605956307381323286279434907632338298807531 (Continued)<br/>
	~~8075319525101901157383418793070215408914993488~~...</apll><br />		9525101901157383418793070215408914993488...</apll><br />


	{{System Variables}}		{{System Variables}}
	{{Article footer}}		{{Article footer}}

Paul Robinson at 13:13, 13 March 2013

2013-03-13T13:13:32Z

← Older revision		Revision as of 09:13, 13 March 2013
Line 43:		Line 43:

	{{System Variables}}		{{System Variables}}
			{{Article footer}}