Literals/Floating point: Difference between revisions
Rename Perl 6 -> Raku, alphabetize, minor clean-up
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1.23E4
</lang>
=={{header|Elena}}==
<lang elena>real r := 1;
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The function write will cause the real values to be coerced as string constants. Icon/Unicon will format these as it sees fit resorting to exponent forms only where needed.
{{libheader|Icon Programming Library}}
[http://www.cs.arizona.edu/icon/library/src/procs/printf The IPL library routine printf provides a broader range of formatting choices.]
=={{header|J}}==
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Note that all the values in an array are the same type, thus the 0, 1 and 2 in the above example are floating point because they do not appear by themselves. Note also that by default J displays no more than six significant digits of floating point values.
=={{header|jq}}==▼
jq floating point literals are identical to JSON floating point literals. However, when jq parses a floating point or integer literal, conversion to IEEE 754 numbers takes place, which may result in a loss of accuracy and/or an apparent change of type, as illustrated by the following sequence of input => output pairs:▼
<lang sh>1.0 => 1▼
1.2 => 1.2▼
1e10 => 10000000000▼
1e100 => 1e+100▼
1e1234 => 1.7976931348623157e+308▼
.1 => 0.1▼
.1e1 => 1</lang>▼
=={{header|Java}}==
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1 / 2 //int equal to 0</lang>
Values that are outside the bounds of a type will give compiler errors when trying to force them to that type.
▲=={{header|jq}}==
▲jq floating point literals are identical to JSON floating point literals. However, when jq parses a floating point or integer literal, conversion to IEEE 754 numbers takes place, which may result in a loss of accuracy and/or an apparent change of type, as illustrated by the following sequence of input => output pairs:
▲<lang sh>1.0 => 1
▲1.2 => 1.2
▲1e10 => 10000000000
▲1e100 => 1e+100
▲1e1234 => 1.7976931348623157e+308
▲.1 => 0.1
▲.1e1 => 1</lang>
=={{header|Julia}}==
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100_000_000; # equals to 100000000
</lang>
=={{header|Perl 6}}==▼
Floating point numbers (the Num type) are written in the standard 'e' scientific notation:▼
<lang perl6>2e2 # same as 200e0, 2e2, 200.0e0 and 2.0e2▼
6.02e23▼
-2e48▼
1e-9▼
1e0</lang>▼
A number like <tt>3.1416</tt> is specifically not floating point, but rational (the Rat type), equivalent to <tt>3927/1250</tt>. On the other hand, <tt>Num(3.1416)</tt> would be considered a floating literal though by virtue of mandatory constant folding.▼
=={{header|Phix}}==
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1.0t0
</pre>
(formerly Perl 6)
▲Floating point numbers (the Num type) are written in the standard 'e' scientific notation:
▲<lang perl6>2e2 # same as 200e0, 2e2, 200.0e0 and 2.0e2
▲6.02e23
▲-2e48
▲1e-9
▲1e0</lang>
▲A number like <tt>3.1416</tt> is specifically not floating point, but rational (the Rat type), equivalent to <tt>3927/1250</tt>. On the other hand, <tt>Num(3.1416)</tt> would be considered a floating literal though by virtue of mandatory constant folding.
=={{header|REXX}}==
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base 2 mantissa and base 2 exponent:
<lang smalltalk>2r1010e2r0101 -> 320.0</lang>
=={{header|Stata}}==
Only decimal floating-point are supported, computations are done in double precision (but storage can be made in integer or single floating-point as well).
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