Џkh"dZddlmZddlZdZy)a This module provides a function that calculates RHO when it needs to be reduced. Translated from Zaikun Zhang's modern-Fortran reference implementation in PRIMA. Dedicated to late Professor M. J. D. Powell FRS (1936--2015). Python translation by Nickolai Belakovski. ) DEBUGGINGNctr||cxkDrdkDsJJ||z }|dkDrd|z}n |dkr|}ntj||z}tr||cxkDr|k\sJJ|S)a] This function calculates RHO when it needs to be reduced. The scheme is shared by UOBYQA, NEWUOA, BOBYQA, LINCOA. For COBYLA, Powell's code reduces RHO by 'RHO *= 0.5; if RHO <= 1.5 * RHOEND: RHO = RHOEND' as specified in (11) of the COBYLA paper. However, this scheme seems to work better, especially after we introduce DELTA. rg?)rnpsqrt)rho_inrhoend rho_ratiorhos \/var/www/teggl/fontify/venv/lib/python3.12/site-packages/scipy/_lib/pyprima/common/redrho.pyredrhors}"""""" I3Fl bggi 6)%v%%%%% J)__doc__constsrnumpyrrrrrs!r