As described on https://randomascii.wordpress.com/2012/03/08/float-precisionfrom-zero-to-100-digits-2/, to uniquely identify a single, it is required to show 9 decimal digits (and 17 for double). Currently, watch in BASIC IDE shows only 7 decimals for single, so e.g. > dim s1 as single, s2 as single, d as double > s1 = 1.1754943 > s2 = 1.1754944 > d = s2 - s1 would show s1 and s2 *both* as 1.175494, while d would contain 1.192E-07, showing that the shown precision is not enough. The suggestion is to show 9 significant digits for single values.
I confirm this. The debugger shows only 6 sing after dot.
Adding Arnaud. Maybe he wants to take a look.
Andreas Heinisch committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/a330732cf8aaa5770bef0b49c113a57ca5e85e10 tdf#107953 - Extend significant digits It will be available in 7.3.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.