Infinity: Difference between revisions

Line 81:

=={{header|ALGOL 68}}==

[[ALGOL 68R]] (from [~~http~~:~~//en.wikipedia.org/wiki/~~Royal_Radar_Establishment Royal Radar Establishment])

[[ALGOL 68R]] (from [[wp:Royal_Radar_Establishment|Royal Radar Establishment]]) has an ''infinity'' variable as part of the ''standard prelude'', on the [[wp:ICT 1900|ICL 1900 Series]] [[wp:mainframe|mainframe]]s the value of ''infinity'' is 5.79860446188₁₀76 (the same as ''max float'').

has an ''infinity'' variable as part of the

''standard prelude'', on the [[ICL 1900 Series]] [[mainframe]]s

the value of ''infinity'' is 5.79860446188₁₀76 (the same as

''max float'').

{{works with|ALGOL 68|Revision 1 - no extensions to language used}}

Note: The underlying hardware may sometimes support an infinity, but

⚫

the ALGOL 68 standard itself does not, and gives no way of setting a variable to

either ±∞.

{{works with|ALGOL 68G|Any - tested with release [http://sourceforge.net/projects/algol68/files/algol68g/algol68g-1.18.0/algol68g-1.18.0-9h.tiny.el5.centos.fc11.i386.rpm/download 1.18.0-9h.tiny]}}

ALGOL 68 does have some 7 built in

{{wont work with|ELLA ALGOL 68|Any (with appropriate job cards) - tested with release [http://sourceforge.net/projects/algol68/files/algol68toc/algol68toc-1.8.8d/algol68toc-1.8-8d.fc9.i386.rpm/download 1.8-8d] - due to extensive use of '''format'''ted transput}}

[[Exceptions#ALGOL_68|exceptions]], these might be used to detect exceptions

⚫

Note: The underlying hardware may sometimes support an infinity, but the ALGOL 68 standard itself does not, and gives no way of setting a variable to either ±∞.

during transput, and so if the underlying hardware does support

∞, then it would be detected with a ''on value error'' while

printing and if ''mended'' would appear as a field full of ''error char''.

ALGOL 68 does have some 7 built in [[Exceptions#ALGOL_68|exceptions]], these might be used to detect exceptions during transput, and so if the underlying hardware does support ∞, then it would be detected with a ''on value error'' while printing and if ''mended'' would appear as a field full of ''error char''.

<lang algol68>printf(($"max int: "gl$,max int));

Line 103:

Line 97:

printf(($"long max real: "gl$,long max real));

printf(($"long long max real: "gl$,long long max real));

printf(($"error char: "gl$,error char))</lang>~~[[ALGOL 68G]]-mk14.1 output:<lang algol68>max int: +2147483647~~

printf(($"error char: "gl$,error char))</lang>

Output:

<pre>

max int: +2147483647

long max int: +99999999999999999999999999999999999

long long max int: +9999999999999999999999999999999999999999999999999999999999999999999999

Line 109:

Line 106:

long max real: +1.000000000000000000000000e+999999

long long max real: +1.00000000000000000000000000000000000000000000000000000000000e+999999

error char: *~~</lang>~~

error char: *

</pre>

=={{header|Argile}}==