Nicolas Martinelli
0f878e4839
The following rounding is incorrect: ``` >>> float_round(6.6 * 0.175, precision_digits=2) 1.15 ``` Indeed, 6.6 * 0.175 = 1.155 ≈ 1.16. In this specific case, the `epsilon` computed is not sufficient. A precision of 53 gives: normalized_value = 115.49999999999997 epsilon = 1.2823075934420547e-14 => new normalized_value = 115.49999999999999 Bad luck, this is just not enough to tip the value in the right direction. However, a precision of 52 is sufficient: normalized_value = 115.49999999999997 epsilon = 2.5646151868841094e-14 => new normalized_value = 115.5 The value of 53 was chosen from the `binary64` number format precision. In case of Python, the corresponding machine epsilon is 2^-52 [1]. Therefore, using 52 instead of 53 does make sense. It is worth noting that the value of the machine epsilon 2^-52 = 2.2204460492503131e-16, which is still 2 orders of magnitude below our dynamic estimation. [1] https://en.wikipedia.org/wiki/Machine_epsilon [2] `numpy.finfo(float).eps = 2.2204460492503131e-16` opw-2047368 closes odoo/odoo#35565 Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>
Odoo
Odoo is a suite of web based open source business apps.
The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Warehouse Management, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, Purchase Management, ...
Odoo Apps can be used as stand-alone applications, but they also integrate seamlessly so you get a full-featured Open Source ERP when you install several Apps.
Getting started with Odoo
For a standard installation please follow the Setup instructions from the documentation.
Then follow the developer tutorials