BUG: npy_acosh fallback too simple.
BUG: npy_acosh fallback too simple.

Fixes gh-6712.

njase/numpy,seberg/numpy,mhvk/numpy,mhvk/numpy,WarrenWeckesser/numpy,ddasilva/numpy,shoyer/numpy,pbrod/numpy,WarrenWeckesser/numpy,Eric89GXL/numpy,gfyoung/numpy,dwillmer/numpy,tacaswell/numpy,charris/numpy,seberg/numpy,jakirkham/numpy,AustereCuriosity/numpy,mattip/numpy,ssanderson/numpy,b-carter/numpy,jorisvandenbossche/numpy,drasmuss/numpy,mhvk/numpy,AustereCuriosity/numpy,dwillmer/numpy,seberg/numpy,tynn/numpy,joferkington/numpy,SiccarPoint/numpy,numpy/numpy,behzadnouri/numpy,gmcastil/numpy,jonathanunderwood/numpy,anntzer/numpy,behzadnouri/numpy,rherault-insa/numpy,simongibbons/numpy,gfyoung/numpy,MSeifert04/numpy,pbrod/numpy,jorisvandenbossche/numpy,gmcastil/numpy,jorisvandenbossche/numpy,mhvk/numpy,maniteja123/numpy,rgommers/numpy,pbrod/numpy,MSeifert04/numpy,solarjoe/numpy,abalkin/numpy,Eric89GXL/numpy,drasmuss/numpy,rherault-insa/numpy,solarjoe/numpy,skwbc/numpy,argriffing/numpy,kiwifb/numpy,dwillmer/numpy,bringingheavendown/numpy,jonathanunderwood/numpy,ahaldane/numpy,madphysicist/numpy,bertrand-l/numpy,jakirkham/numpy,ContinuumIO/numpy,numpy/numpy,chiffa/numpy,ahaldane/numpy,pdebuyl/numpy,shoyer/numpy,ESSS/numpy,rgommers/numpy,bringingheavendown/numpy,simongibbons/numpy,pizzathief/numpy,endolith/numpy,stuarteberg/numpy,mattip/numpy,chatcannon/numpy,WarrenWeckesser/numpy,tacaswell/numpy,behzadnouri/numpy,utke1/numpy,pbrod/numpy,nbeaver/numpy,njase/numpy,shoyer/numpy,madphysicist/numpy,dwillmer/numpy,ContinuumIO/numpy,nbeaver/numpy,grlee77/numpy,endolith/numpy,stuarteberg/numpy,Eric89GXL/numpy,solarjoe/numpy,seberg/numpy,WarrenWeckesser/numpy,argriffing/numpy,tynn/numpy,SiccarPoint/numpy,nbeaver/numpy,pdebuyl/numpy,rgommers/numpy,utke1/numpy,utke1/numpy,tynn/numpy,madphysicist/numpy,pizzathief/numpy,charris/numpy,pbrod/numpy,argriffing/numpy,simongibbons/numpy,kiwifb/numpy,pizzathief/numpy,ahaldane/numpy,drasmuss/numpy,njase/numpy,maniteja123/numpy,ahaldane/numpy,jorisvandenbossche/numpy,Eric89GXL/numpy,b-carter/numpy,rherault-insa/numpy,ContinuumIO/numpy,bringingheavendown/numpy,shoyer/numpy,stuarteberg/numpy,jonathanunderwood/numpy,chiffa/numpy,ddasilva/numpy,ddasilva/numpy,SiccarPoint/numpy,madphysicist/numpy,mattip/numpy,chiffa/numpy,joferkington/numpy,tacaswell/numpy,Dapid/numpy,abalkin/numpy,MSeifert04/numpy,anntzer/numpy,charris/numpy,ssanderson/numpy,joferkington/numpy,Dapid/numpy,jakirkham/numpy,AustereCuriosity/numpy,pdebuyl/numpy,pdebuyl/numpy,ESSS/numpy,simongibbons/numpy,jakirkham/numpy,endolith/numpy,stuarteberg/numpy,endolith/numpy,rgommers/numpy,maniteja123/numpy,grlee77/numpy,madphysicist/numpy,MSeifert04/numpy,anntzer/numpy,skwbc/numpy,shoyer/numpy,pizzathief/numpy,jakirkham/numpy,Dapid/numpy,jorisvandenbossche/numpy,gfyoung/numpy,ahaldane/numpy,kiwifb/numpy,b-carter/numpy,numpy/numpy,bertrand-l/numpy,mhvk/numpy,ssanderson/numpy,chatcannon/numpy,gmcastil/numpy,MSeifert04/numpy,abalkin/numpy,anntzer/numpy,grlee77/numpy,bertrand-l/numpy,grlee77/numpy,simongibbons/numpy,numpy/numpy,skwbc/numpy,pizzathief/numpy,charris/numpy,WarrenWeckesser/numpy,SiccarPoint/numpy,chatcannon/numpy,mattip/numpy,ESSS/numpy,joferkington/numpy,grlee77/numpy