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16 lines
615 B
Plaintext
16 lines
615 B
Plaintext
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WITH RECURSIVE
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/* Number of random floating-point values to try.
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** On a circa 2016 x64 linux box, this test runs at
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** about 80000 cases per second -------------------vvvvvv */
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c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<100000),
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fp(y) AS MATERIALIZED (
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SELECT CAST( format('%+d.%019d0e%+03d',
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random()%10,abs(random()),random()%200) AS real)
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FROM c
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)
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SELECT y FROM fp
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WHERE -log10(abs(decimal_sub(dtostr(y,24),format('%!.24e',y))/y))<15.0;
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/* Number of digits of accuracy required -------^^^^ */
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