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cpu(9v)								       cpu(9v)

NAME
       cpu  - Global Variable: Provides a unique logical processor-type family
       identifier

SYNOPSIS
       extern int cpu;

DESCRIPTION
       The cpu global variable provides a unique logical family identifier  of
       the  processor  type of the running system. The logical system name can
       represent a single processor or a family of processor types.  For exam‐
       ple, the constant DEC_3000_500 represents the  DEC 3000 Model 500 Alpha
       Workstation. The defined processor names appear in the following	 file:
       /usr/sys/include/arch/alpha/hal/cpuconf.h.

       You use the cpu global variable to conditionally execute processor-spe‐
       cific code. For example, the following code fragment  calls  a  system-
       specific	 initialization	 interface  for	 the  DEC 3000 Model 500 Alpha
       Workstation:
	.
	.
	.  if (cpu == DEC_3000_500) {
	       init_3000_500(); }
	.
	.
	.

								       cpu(9v)

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