tree 1bae30d89763729e548907895cb89c8ca995b69a
parent daec961e091b76b1329077f505aa8db92a027002
author Raymond Hettinger <python@rcn.com> 1093914315 +0000
committer Raymond Hettinger <python@rcn.com> 1093914315 +0000
HG:extra convert_revision:svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/python/branches/legacy-trunk%4037213

Take advantage of the math library's ldexp for assembling a float by
components without division and without roundoff error for properly
sized mantissas (i.e. on systems with 53 or more mantissa bits per
float).  Eliminates the previous implementation's rounding bias as
aptly demonstrated by Tim Peters.