nstr(mpf('inf')) prints '+inf' (should be 'inf') #827
Description
While for finite numbers positive sign - ignored. This also inconsistent across contexts:
>>> nstr(mp.mpf('inf'))
'+inf'
>>> nstr(fp.mpf('inf'))
'inf'{{ message }}
While for finite numbers positive sign - ignored. This also inconsistent across contexts:
>>> nstr(mp.mpf('inf'))
'+inf'
>>> nstr(fp.mpf('inf'))
'inf'