Meissel–Mertens constant: Difference between revisions
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(→{{header|Perl}}: iterate over primes (much faster)) |
(Added Sidef) |
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<pre> |
<pre> |
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1: 0.262733140866 |
1: 0.262733140866 |
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</pre> |
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=={{header|Sidef}}== |
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<syntaxhighlight lang="ruby">var sum = 0 |
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1e7.each_prime {|p| |
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with (1f/p) {|t| |
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sum += (log(1 - t) + t) |
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} |
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} |
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say sum+Num.EulerGamma</syntaxhighlight> |
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{{out}} |
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<pre> |
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0.26149721577767111119422410228297206467931376306 |
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</pre> |
</pre> |
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{{libheader|Wren-fmt}} |
{{libheader|Wren-fmt}} |
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It will be seen that this is converging to the correct answer though we'd need to add a lot more primes to obtain a valid 11th digit. |
It will be seen that this is converging to the correct answer though we'd need to add a lot more primes to obtain a valid 11th digit. |
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<syntaxhighlight lang=" |
<syntaxhighlight lang="wren">import "./math" for Int |
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import "./fmt" for Fmt |
import "./fmt" for Fmt |
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{{libheader|Wren-gmp}} |
{{libheader|Wren-gmp}} |
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This agrees with the Phix entry that the 1,000th digit after the decimal point is '8' after rounding (according to OEIS it's actually '7' but the next one is '7' also). |
This agrees with the Phix entry that the 1,000th digit after the decimal point is '8' after rounding (according to OEIS it's actually '7' but the next one is '7' also). |
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<syntaxhighlight lang=" |
<syntaxhighlight lang="wren">import "./gmp" for Mpf |
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import "./math" for Int |
import "./math" for Int |
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import "./fmt" for Fmt |
import "./fmt" for Fmt |
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