10-09-2008
...then at that point it is up to the programmer to determine if 'frequently' warrants the register class or not.
If you don't like the register class, fine, don't use it, in an instance such as this.
I felt that it might very well improve the performance of the function, hence the inclusion.
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LEARN ABOUT DEBIAN
unw_is_fpreg
UNW_IS_FPREG(3) Programming Library UNW_IS_FPREG(3)
NAME
unw_is_fpreg -- check if a register is a floating-point register
SYNOPSIS
#include <libunwind.h>
int unw_is_fpreg(unw_regnum_t reg);
DESCRIPTION
The unw_is_fpreg() routine checks whether register number reg is a floating-point register.
This routine is normally implemented as a macro and applications should not attempt to take its address.
RETURN VALUE
The unw_is_fpreg() routine returns a non-zero value if reg is a floating-point register. Otherwise, it returns a value of 0.
THREAD AND SIGNAL SAFETY
unw_is_fpreg() is thread-safe as well as safe to use from a signal handler.
SEE ALSO
libunwind(3), unw_get_reg(3), unw_set_reg(3), unw_get_fpreg(3), unw_set_fpreg(3)
AUTHOR
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.
Programming Library 16 August 2007 UNW_IS_FPREG(3)