NAME
fpversion - print information about the system CPU and FPU
SYNOPSIS
fpversion [ -foption ]
DESCRIPTION
fpversion 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 informa-
tion 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 information
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 pro-
grams but note that the output does not include
a leading -".
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.