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
Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.