FPVERSION(1)FPVERSION(1)NAMEfpversion - print information about the system CPU and FPU
SYNOPSISfpversion [ -foption ]
DESCRIPTIONfpversion prints information about the system CPU and all available
floating-point hardware on the standard output. fpversion is available
only on SPARC platforms.
Invoked without an argument, some of the following information will be
displayed: CPU type and approximate clock rate, FPU type, apparent mask
number and approximate clock rate, and highest performance SPARC ABI-
compliant floating-point code generation option. The type of informa‐
tion displayed depends upon the system and the floating-point hardware
available. The clock rate is derived by executing instructions in a
loop and timing with getrusage(2) and is thus somewhat variable.
OPTIONS-foption Prints the fastest SPARC ABI-compliant floating-point code
generation option for that particular system. This usage
is intended for shell scripts and Makefiles that compile
programs but note that the output does not include a lead‐
ing -".
EXAMPLES
demo% fpversion
A SPARC-based CPU is available.
Kernel says CPU's clock rate is 1062.0 MHz.
Kernel says main memory's clock rate is 177.0 MHz.
Sun-4 floating-point controller version 0 found.
An UltraSPARC chip is available.
Use "-xtarget=ultra3i -xcache=64/32/4:1024/64/4" code-generation option.
Hostid = 0x83270XXX.
demo% fpversion-foption
xtarget=ultra3i -xcache=64/32/4:1024/64/4
Use fpversion on compiler command lines:
cc -`fpversion -foption` any.c
corresponds to
cc -xtarget=ultra2i -xcache=16/32/1:2048/64/1 any.c
NOTES
On UltraSPARC platforms, the fastest SPARC ABI-compliant floating-point
code generation option does not exploit the full potential of the
underlying hardware. If SPARC ABI compliance is not a consideration,
use the code generation option of -xtarget=native in 32-bit mode and
-xtarget=native64 in 64-bit mode to better utilize the SPARC hardware
present.
April 2007 FPVERSION(1)
