Determine clock speed

From: Josh Lessard (NOjlessardSPAM_at_rogers.com)
Date: 01/28/05 

Date: Fri, 28 Jan 2005 15:52:36 -0500

How can I determine, in software, the clock speed in MHz of the SPARC
machine I'm using? Is there a system call/C function I can use to find
this information?

Thanks in advance.