underflow handled much more slowly in gcc than in icc

Solution Unverified - Updated -

Issue

  • Underflow in gcc is handled much more slowly in gcc than icc.
  • The solution is probably to take some ideas from projects like http://lipforge.ens-lyon.fr/www/crlibm/ and incorporate them into glibc.
  • Currently glibc's libm is derived from IBM Ultimate Precision Math Library which preserves the precision perfectly but does so at an immense cost in certain circumstances.

Environment

  • Red Hat Enterprise Linux 6

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In