thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-22 15:42:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Text changed to match other quantile descriptions

Browse Source
This commit is contained in:
Alexey 2021-06-28 20:26:57 +00:00
parent 538558ccb5
commit 8ac7e147b7
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
docs/en/sql-reference/aggregate-functions/reference/quantilebfloat16.md
View File

@ -4,7 +4,7 @@ toc_priority: 209
# quantileBFloat16 {#quantilebfloat16}
Calculates a [quantile](https://en.wikipedia.org/wiki/Quantile#Estimating_quantiles_from_a_sample) of a sample consisting of [bfloat16](https://en.wikipedia.org/wiki/Bfloat16_floating-point_format) numbers. bfloat16 is a floating-point data type with 1 sign bit, 8 exponent bits and 7 fraction bits.
Computes an approximate [quantile](https://en.wikipedia.org/wiki/Quantile#Estimating_quantiles_from_a_sample) of a sample consisting of [bfloat16](https://en.wikipedia.org/wiki/Bfloat16_floating-point_format) numbers. bfloat16 is a floating-point data type with 1 sign bit, 8 exponent bits and 7 fraction bits.
The function converts input values to 32-bit floats and takes the most significant 16 bits. Then it calculates bfloat16 quantile value and converts the result to a 64-bit float by appending zero bits.
The function is a fast quantile estimator with a relative error no more than 0.390625%.