fpc(3) Library Functions Manual fpc(3)Name
fpc, get_fpc_csr, set_fpc_csr, swapRM, swapINX - floating-point control registers
Syntax
#include <mips/fpu.h>
int get_fpc_csr()
int set_fpc_csr(csr)
int csr;
int get_fpc_irr()
int swapRM(x)
int x;
int swapINX(x)
int x;
Description
These functions are to get and set the floating-point control registers of RISC floating-point units. All of these functions take and
return their values as 32 bit integers.
The file <mips/fpu.h> contains unions for each of the control registers. Each union contains a structure that breaks out the bit fields
into the logical parts for each control register. This file also contains constants for fields of the control registers.
RISC floating-point implementations have a control and status register and an implementation revision register. The control and status
register is returned by The routine sets the control and status register and returns the old value. The implementation revision register
is read-only and is returned by the routine
The function sets only the rounding mode and returns the old rounding mode. The function sets only the sticky inexact bit and returns the
old one. The bits in the arguments and return values to and are right justified.
RISC fpc(3)
Check Out this Related Man Page
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)
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