# Fractional instrument decimal point limits

**URL:** <https://forum.csound.com/t/fractional-instrument-decimal-point-limits/728>\
**Category:** General\
**Created:** [April 4, 2022, 12:23am UTC](https://forum.csound.com/t/fractional-instrument-decimal-point-limits/728 "2022-04-04T00:23:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DespairBear](https://forum.csound.com/user_avatar/forum.csound.com/despairbear/32/88_2.png) [@DespairBear](https://forum.csound.com/u/DespairBear)\
**Post date:** [April 4, 2022, 12:23am UTC](https://forum.csound.com/t/fractional-instrument-decimal-point-limits/728/1 "2022-04-04T00:23:11Z")

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Hey all,

Was curious if anybody here knows the limitations of the fractional instrument instancing, as in, how many decimal places does this support? I imagine the parsing of fractional instruments has a limit to how many decimal places it will accept before it starts ignoring/discarding

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<div class="post-metadata">

**Author:** ![joachim](https://forum.csound.com/letter_avatar_proxy/v4/letter/j/a87d85/32.png) [@joachim](https://forum.csound.com/u/joachim)\
**Post date:** [April 4, 2022, 2:25pm UTC](https://forum.csound.com/t/fractional-instrument-decimal-point-limits/728/2 "2022-04-04T14:25:29Z")

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well i don’t know where in the sources to find an answer for it, but for  
practical usgae it seems to have enough space. i tried this (and you  
can try to change the fractional number in the score to 1.0000000002):

-odac

sr = 44100  
ksmps = 64  
nchnls = 2  
0dbfs = 1

instr 1  
outall(poscil:a(.2,400))  
endin

instr 2  
turnoff2(1.0000000001,4,0)  
turnoff  
endin

i 1.0000000001 0 100 i 2 1 1