ClickHouse/tests/performance/float_formatting.xml

<!--
    The tests times are wildly different, e.g. toString(number % 100)
    is 10 times faster than toString(number % 100 + 0.5). The shorter
    queries are somewhat unstable, so ignore differences less than 10%.
-->
<test>
    <substitutions>
       <substitution>
           <name>expr</name>
           <values>
               <value>toFloat64(number)</value>
               <value>toFloat64(number % 2)</value>
               <value>toFloat64(number % 10)</value>
               <value>toFloat64(number % 100)</value>
               <value>toFloat64(number % 1000)</value>
               <value>toFloat64(number % 10000)</value>
               <value>toFloat64(number % 100 + 0.5)</value>
               <value>toFloat64(number % 100 + 0.123)</value>
               <value>toFloat64(number % 1000 + 0.123456)</value>
               <value>number / 2</value>
               <value>number / 3</value>
               <value>number / 7</value>
               <value>number / 16</value>
               <value>toFloat32(number)</value>
               <value>toFloat32(number % 2)</value>
               <value>toFloat32(number % 10)</value>
               <value>toFloat32(number % 100)</value>
               <value>toFloat32(number % 1000)</value>
               <value>toFloat32(number % 10000)</value>
               <value>toFloat32(number % 100 + 0.5)</value>
               <value>toFloat32(number % 100 + 0.123)</value>
               <value>toFloat32(number % 1000 + 0.123456)</value>
           </values>
       </substitution>
        <substitution>
            <name>expr_zero</name>
            <values>
                <value>1 / rand()</value>
                <value>rand() / 0xFFFFFFFF</value>
                <value>0xFFFFFFFF / rand()</value>
                <value>toFloat64(rand())</value>
                <value>toFloat64(rand64())</value>
                <value>toFloat32(rand())</value>
                <value>toFloat32(rand64())</value>
                <value>reinterpretAsFloat32(reinterpretAsString(rand()))</value>
                <value>reinterpretAsFloat64(reinterpretAsString(rand64()))</value>
            </values>
        </substitution>
    </substitutions>

    <query>SELECT count() FROM numbers(10000000) WHERE NOT ignore(toString({expr}))</query>
    <query>SELECT count() FROM zeros(10000000) WHERE NOT ignore(toString({expr_zero}))</query>
</test>